CN114961803B - A construction method for crushing chamber system engineering - Google Patents
A construction method for crushing chamber system engineering Download PDFInfo
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- CN114961803B CN114961803B CN202210657216.XA CN202210657216A CN114961803B CN 114961803 B CN114961803 B CN 114961803B CN 202210657216 A CN202210657216 A CN 202210657216A CN 114961803 B CN114961803 B CN 114961803B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D13/00—Large underground chambers; Methods or apparatus for making them
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Abstract
本发明公开了一种破碎硐室系统工程施工方法，包括以下步骤：联络措施巷施工；溜矸斜道施工；给矿机硐室小断面施工；破碎硐室小断面掘进；施工两主溜井和原矿仓天井及两天井中心吊罐孔；配电硐室小断面掘进；1号联络道施工；大件道小断面掘进；胶带斜井尾部大件井上部起吊硐室小断面向上掘进至硐室顶部；给矿皮带道及其尾部大件井施工；3号联络道施工；胶带斜井尾部大件井中心小反井施工；胶带斜井尾部大件井上部起吊硐室施工；胶带斜井尾部大件井扩刷施工；溜井及原矿仓扩刷支护施工；给矿机硐室施工；配电硐室施工；除尘硐室施工；破碎硐室施工；大件道施工；2号联络道施工。本发明矸石转运环节简单，材料、人员、设备进出方便，施工进度快。
The invention discloses a method for construction of a crushing chamber system engineering, comprising the following steps: construction of a connecting measure tunnel; construction of a gangue chute; construction of a small section of a feeder chamber; excavation of a small section of a crushing chamber; construction of two main chutes and a raw ore bin skylight and two central hanging pot holes of the skylight; excavation of a small section of a power distribution chamber; construction of a No. 1 connecting road; excavation of a small section of a large-piece road; upward excavation of a small section of a lifting chamber at the upper part of the large-piece shaft at the tail of the belt inclined shaft; Enter the top of the chamber; construct the ore feeding beltway and the large shaft at its tail; construct the No. 3 connecting road; construct the small counter shaft in the center of the large shaft at the tail of the belt inclined shaft; construct the upper hoisting chamber of the large shaft at the tail of the belt inclined shaft; expand and brush the large shaft at the tail of the belt inclined shaft; expand and brush the chute and the original ore bin support; construct the ore feeder chamber; construct the power distribution chamber; construct the dust removal chamber; construct the crushing chamber; construct the large road; and construct the No. 2 connecting road. The present invention has simple waste rock transportation links, convenient access for materials, personnel, and equipment, and fast construction progress.
Description
Technical Field
The invention relates to the field of mine construction, in particular to a crushing chamber system engineering construction method.
Background
The main construction body of the crushing chamber system engineering is a large chamber and a drop shaft, no direct channel is communicated with the adhesive tape inclined shaft, the construction area is narrow, the multi-head parallel construction is inconvenient to organize, the ventilation is difficult, the lifting capacity is limited, the supporting engineering quantity of each large chamber is large, and the supporting time is long.
The traditional construction method is that after the inclined belt shaft falls to the bottom, the engineering of the lower chamber of the inclined belt shaft is completed, two large shafts are reversely dug upwards from the ore feeding belt channel and the connecting channel, then the large shafts, the ore feeding belt channel and the connecting channel are utilized to transfer gangue to the system engineering of the crushing chamber of the inclined belt shaft, but the gangue transfer link of the construction method is complex, the construction difficulty is high, the upper and lower parts of materials, personnel and equipment are extremely difficult, the construction auxiliary cost is high, and the construction progress is slow.
Disclosure of Invention
In order to solve the technical problems, the invention provides a crushing chamber system engineering construction method which is simple in construction, low in construction cost and high in construction speed.
The technical scheme for solving the technical problems is as follows: a crushing chamber system engineering construction method comprises the following steps:
Step P1, constructing a communication measure roadway between the inclined shaft of the adhesive tape and the chamber of the ore feeder: when the adhesive tape inclined shaft is constructed to the position of the connecting measure roadway, the connecting measure roadway is excavated;
Step P2, construction of a gangue sliding chute between the adhesive tape inclined shaft and the ore feeder chamber: the rubber belt inclined shaft is continuously excavated, and when the inclined shaft is excavated to the position of the gangue chute, the gangue chute is reversely excavated and communicated with the communication measure lane;
Step P3, small-section construction of a chamber of the ore feeder: along the small section construction of the feeder chamber, the gangue is transferred and stored into the skip of the inclined shaft of the adhesive tape through the gangue discharging funnel at the lower opening of the gangue chute to be discharged;
Step P4, small-section tunneling of the crushing chamber: tunneling along the small section of the crushing chamber, transferring the gangue to a gangue discharging hopper at the lower opening of the gangue sliding chute, and discharging the gangue into a skip of the inclined shaft of the adhesive tape;
And P5, constructing two main drop shafts, a raw ore bin drop shaft and two drop shaft center hanging pot holes: digging out the position of the raise by adopting a lifting tank back-well construction method, punching two raise center lifting tank holes, punching the center lifting tank holes by adopting a geological drilling machine, and turning the gangue into a gangue sliding chute nearby after the gangue slides to the crushing chamber from the working surface to be horizontal, and lifting the gangue into an adhesive tape inclined shaft skip; the main drop shaft inclined part, the branch drop shaft and the raw ore bin are constructed by adopting a common back shaft method, the main drop shaft inclined part and the small back shaft in the center of the raw ore bin are reversely dug upwards from the ore feeder chamber, when the small back shaft in the center of the raw ore bin is dug to the main drop shaft inclined part, the branches reversely dug the small back shafts of the 1 # and 2 # main drop shaft inclined parts to two sides and are communicated with the main drop shaft courtyard, and gangue slides to the ore feeder chamber along the small back shaft and slides into the gangue chute nearby; when the main drop shaft is brushed to the position of the branch drop shaft, reversely digging a small reverse shaft of the branch drop shaft to the ore discharging chamber;
step P6, small-section tunneling of the distribution chamber: tunneling along the small section of the distribution chamber, transferring the gangue to a gangue discharging hopper at the lower opening of the gangue sliding chute, and discharging the gangue into a skip of the inclined shaft of the adhesive tape;
step P7, no.1 contact road construction: carrying out construction of a No.1 connecting channel, transferring waste rock to a waste rock storage hopper through a waste rock discharging hopper at the lower opening of a waste rock chute, and discharging waste rock into a skip of an inclined shaft of an adhesive tape;
step P8, tunneling a large piece of tunnel with a small section: carrying out large-piece small-section tunneling, and transferring waste rock to a waste rock discharging hopper at the lower opening of the waste rock sliding chute to discharge waste rock in a skip of the inclined shaft;
step P9, tunneling the small section of the lifting chamber at the upper part of the tail large part of the inclined shaft of the adhesive tape upwards to the top of the chamber: tunneling upwards along the small section of the lifting chamber at the upper part of the large part of the tail of the inclined shaft of the adhesive tape to the top of the chamber, transferring and storing gangue through the gangue discharging hopper at the lower opening of the gangue sliding chute to discharge gangue in the skip of the inclined shaft of the adhesive tape;
Step P10, construction of a feeding belt channel and a large well at the tail of the feeding belt channel: when the adhesive tape inclined shaft is constructed to a position 5m away from the feeding belt channel, firstly, the shaft is dug up for layering, the tunneling bottom is lifted to be horizontal, the horizontal is leveled with the bottom plate of the feeding belt channel, the inclined shaft rock raking machine is utilized to discharge gangue, the feeding belt channel is directly dug out and supported, and meanwhile, the center small reverse shaft of the big shaft at the tail part of the inclined shaft is dug back to the horizontal of the crushing chamber and is spread and brushed;
P11, constructing a No. 3 connecting channel, and discharging gangue by using a inclined shaft rock raking machine;
Step P12, construction of a small reverse well at the center of a large well at the tail part of the inclined shaft of the adhesive tape: performing the construction of a small reverse well at the center of a large well at the tail part of the inclined shaft of the adhesive tape, and discharging gangue by using a rock raking machine of the inclined shaft;
And P13, constructing a lifting chamber at the upper part of the large tail part of the inclined shaft of the adhesive tape: the lifting chamber adopts a chute from a large-piece small-section roadway to the top of the chamber, the chute avoids the small reverse well position of the large-piece well, then the top is subjected to layered expansion brushing construction, the gangue slides from the chute to the horizontal of the crushing chamber, and the gangue is transferred and stored into a skip of the adhesive tape inclined well through a gangue sliding chute lower opening gangue discharging funnel to be discharged;
Step P14, spreading and brushing construction of a large well at the tail part of the inclined shaft of the adhesive tape: the tail large well of the adhesive tape inclined well is brushed downwards from the center small reverse well of the tail large well, and gangue is discharged by using an inclined well rock raking machine;
Step P15, carrying out expansion brushing support construction on a drop shaft and a raw ore bin: the vertical section of the main drop shaft is horizontally and downwards brushed, gangue is filled in the measure section drop shaft, then, the drop shaft, the dumping chamber and the small back shaft of the raw ore bin slide to the crushing level through the inclined section drop shaft and the small back shaft of the raw ore bin, and the drop shaft is transferred into the gangue chute; when the main drop shaft is spread to the inclined section for supporting construction, a detachable half-side platform is made by using a binding anchor at the position of the variable section, and the drop shaft of the inclined section is constructed by using the lower brush of the platform; before the raw ore bin is subjected to expanding brushing and supporting, constructing an ore bin side part of a middle section ore discharging chamber, and then taking the ore discharging chamber as a platform to downwards expand brushing and construct the raw ore bin; the branch drop shafts only synchronously support 2-3 m of expansion brushes at the side mouths of the main drop shafts and the main drop shafts, and the rest parts are constructed by downward expansion brushes from the upper parts of the branch drop shafts;
Step P16, construction of a feeder chamber: constructing a feeder chamber, namely firstly carrying out upward roof-lifting construction on a small-section channel, then carrying out expansion brushing on the small-section channel to construct a chamber layer by layer after the small-section channel is lifted to the top of the chamber, carrying out anchor net temporary support on the upper layer by layer, carrying out expansion brushing on the lower layer by layer and carrying out temporary support, and carrying out support from bottom to top after the full section is dug out;
Step P17, construction of a distribution chamber: constructing a power distribution chamber, performing one-time expanding brushing on the power distribution chamber, and supporting the power distribution chamber, transferring waste rock to a waste rock discharging hopper at the lower opening of a waste rock chute, and discharging the waste rock into a skip of the inclined shaft;
Step P18, dust removal chamber construction: constructing by adopting a layering method, firstly tunneling and supporting in an upper layering mode, then constructing and supporting in a lower layering mode, and synchronously constructing the lower layering mode and a first layering mode of a pilot tunnel on the left side of a crushing chamber; during lower layering construction, protecting a platform at the opening of the chamber and rock columns below the steps, and transferring waste rock to a waste rock discharging hopper at the lower opening of a waste rock chute to discharge waste rock in a skip of the inclined shaft;
step P19, crushing chamber construction: constructing by adopting a pilot tunnel layering method, and finishing the construction of peripheral chambers before the construction of the crushing chambers to form a wide construction site so as to facilitate the construction, and transferring waste rock from a waste rock discharging hopper at the lower opening of a waste rock chute to a waste rock discharging hopper of an adhesive tape inclined shaft;
And step P20, large-piece road construction: after the construction of each chamber and the sliding breaking system is finished, carrying out large-piece road construction;
Step P21, no. 2 contact road construction: and carrying out construction of a No. 2 connecting road, and constructing the No. 2 connecting road from the opening of the large road.
In the step P5, for the construction of the vertical portion of the main drop shaft, the drop shaft is excavated by adopting a hanging tank reverse well construction method, the drop shaft is ventilated through a hanging tank hole, only two persons work on the hanging tank, when the hanging tank runs up and down, a top protection umbrella is opened, operators observe the well wall at any time, loose gangue live stones are found, the tank is immediately stopped for processing, and when the tank reaches the top working face, the operators stand under the protection umbrella to process the top plate; because of the hanging pot Kong Pianxie, the hanging pot collides with the well wall when being up and down, personnel tie up the safety belt, and the pot is immediately stopped for treatment when the hanging pot collides; and for the inclined part of the main drop shaft, the branch drop shaft and the raw ore bin, a common reverse well method is adopted for construction, a working platform is built by using a wall anchor, a bottom anchor, channel steel and a wood board, before blasting, the wall anchor and the bottom anchor of the upper layer of platform are perforated and installed, the distance between the two layers of platforms is controlled between 1.2 and 1.5m, I-steel of the platform and the wall anchor and the bottom anchor are firmly bound by iron wires, the wood board and the I-steel are firmly bound by two persons on a working surface, the top of the working surface is knocked down, when the persons go up and down, the loose stones of the top and the bottom board are carefully observed, the abnormity is found, and the working surface is treated in time.
In the above-mentioned broken chamber system engineering construction method, in the step P13, the anchor net is first sprayed for temporary support after the layered tunneling, and then the permanent support is carried out from bottom to top after the chambers are all excavated.
In the step P15, before the vertical section drop shaft concrete is supported and stabilized, the bottom of the periphery of a shaft is chiseled by a pneumatic pick, and a template seat is arranged on solid rock and cannot be suspended; the bottom of the template is plugged, and the template is firmly supported; if the template is suspended because of the deviated edge of the central courtyard, an anchor rod is additionally arranged at the bottom of the shaft, and a backing plate is added for stabilizing the template; when the inclined section drop shaft is used for expanding brushing construction, the working surface is made to be horizontal, so that the drilling operation is facilitated; the bottom of each supporting frame is in a horizontal state, and the drop shaft and the hopper opening 1m of the raw ore bin are synchronously supported with the chamber.
In the step P16, before the construction of the ore feeder chamber, a steel beam and a wood plate are adopted to seal the hopper opening of the raw ore bin so as to prevent falling objects from injuring people; the reserved support section of the raw ore bin hopper supports synchronously with the arch part of the ore feeder chamber; the wall part is supported by a wood template, the arch part is supported by channel steel arch tires and arch tire plates, and a support platform is arranged by a frame pipe.
In the above-mentioned construction method of the crushing chamber system engineering, in the step P17, the joint 1m of the feeder chamber, the distribution chamber and the crushing chamber is synchronously supported with the crushing chamber.
In the step P18, the No. 2 communication channel 3m is constructed from the dust removal chamber while the dust removal chamber is constructed; the joint 1m of the dedusting chamber and the crushing chamber is synchronously supported with the crushing chamber.
In the above-mentioned construction method of breaking chamber system engineering, in step P19, in order to ensure the concrete construction quality and accelerate the construction speed during pilot tunnel construction, after the wall concrete is constructed and reaches the initial strength, the roof-picking operation is performed without disassembling the wall mould, and the wall mould protects the concrete from the impact of blasted rock.
The invention has the beneficial effects that: the invention constructs a connecting measure lane between the ore feeder chamber and the adhesive tape inclined shaft, constructs a gangue sliding inclined passage between the ore feeder chamber and the adhesive tape inclined shaft, utilizes the connecting measure lane to put personnel, materials and equipment down, and utilizes the gangue sliding inclined passage to transfer gangue into the adhesive tape inclined shaft skip to construct a crushing system engineering. The invention has the characteristics of simple gangue transferring link, convenient material, personnel and equipment access, quick construction progress and the like, and greatly saves the construction auxiliary cost.
Drawings
Fig. 1 is a construction flow chart of the present invention.
Fig. 2 is a plan view of the crushing chamber system of the present invention.
FIG. 3 is a schematic diagram of the system of the present invention.
Fig. 4 is a side view of fig. 3.
FIG. 5 is a schematic illustration of a construction process layout of the breaking system of the present invention.
Fig. 6 is a plan view of the crushing chamber construction process arrangement of the present invention.
Fig. 7 is a cross-sectional view of a crushing chamber construction process arrangement of the present invention.
Detailed Description
The invention is further described below with reference to the drawings and examples.
As shown in fig. 1-7, the construction method of the crushing chamber system engineering comprises the following steps:
step P1, constructing a communication measure roadway between the inclined shaft of the adhesive tape and the chamber of the ore feeder: and when the adhesive tape inclined shaft 1 is constructed to the position of the connecting measure roadway 2, the connecting measure roadway is excavated.
Step P2, construction of a gangue sliding chute between the adhesive tape inclined shaft and the ore feeder chamber: and (3) continuously digging the shaft of the inclined shaft 1 with the adhesive tape, and reversely digging the gangue chute 3 when the shaft 1 of the inclined shaft is tunneled to the position of the gangue chute 3 (gangue bin), so that the gangue is communicated with the communication measure lane 2, and automatically slides into the skip of the inclined shaft 1 with the adhesive tape along the chute to be discharged.
Step P3, small-section construction of a chamber of the ore feeder: and (2) carrying out construction along a small section of the ore feeder chamber 4 while carrying out the step (P2), transferring the gangue through a gangue discharging funnel at the lower opening of the gangue chute 3 to a gangue discharging hopper in the adhesive tape inclined shaft 1 skip, and discharging the gangue.
Step P4, small-section tunneling of the crushing chamber: and (3) tunneling along the small section of the crushing chamber 5 after the step (P3) is completed, transferring the gangue through a gangue discharging funnel at the lower opening of the gangue sliding chute 3 to the gangue discharging hopper of the adhesive tape inclined shaft 1, and discharging the gangue.
And P5, constructing two main drop shafts, a raw ore bin drop shaft and two drop shaft center hanging pot holes: while the step P4 is carried out, a hanging pot reverse well construction method is adopted to horizontally punch a courtyard leading to the middle section of-100 m from-200 m, vertical parts of main drop shafts 6 and 7 are constructed, main holes and auxiliary holes are punched in the centers of the two courtyards, and a geological drilling machine is adopted to punch a central hanging pot hole; and a common reverse well method is adopted to construct inclined parts of the main drop shafts 6 and 7, -150m branch drop shafts 19 and 24 and the raw ore bin 8, and the small reverse well at the center of the inclined parts of the main drop shafts 6 and 7 and the raw ore bin 8 is reversely dug upwards from the ore feeder chamber 4. When the small central reverse well of the raw ore bin 8 is dug to the inclined parts of the main drop shafts 6 and 7, the branches reversely dug to the inclined parts of the main drop shafts 6 and 7 towards the two sides and are communicated with the main drop shafts 6 and 7. Gangue slides along the small back well to the feeder chamber 4 and then slides into the chute 3 nearby. When the main drop shafts 6 and 7 are brushed to the positions of the branch drop shafts 19 and 24, the branch drop shafts 19 and 24 small reverse shafts are reversely excavated and constructed to the ore discharging chamber 21 in the middle section of-150 m.
To the construction of the vertical part of main drop shaft 6, 7, need adopt the construction method of drop tank reverse well to dig out the courtyard position, the courtyard is ventilated through the drop tank hole, only accurate two people's operations on the drop tank, when the drop tank operates from top to bottom, the top protection umbrella must be opened, the operating personnel observe the wall of a well at any time, discovery pine gangue alive stone, stop the jar immediately and handle, when jar to top working face, the operating personnel need stand under the protection umbrella and handle the roof. Because of the lift canisters Kong Pianxie, the lift canisters will collide with the well wall when up and down, and personnel must tie up the safety belt. When collision happens, tank stopping treatment is immediately carried out, and for the inclined parts of the main drop shafts 6 and 7, the branch drop shafts 19 and 24 and the raw ore bin 8, a common reverse well method is adopted for construction, a wall anchor, a bottom anchor, channel steel and a wood board are utilized for building an operation platform, the wall anchor and the bottom anchor of the upper layer of platform are perforated and installed before blasting each time, the distance between the two layers of platform should be controlled between 1.2 and 1.5m, iron wires are used for binding firmly between platform I-steel and the wall anchor and the bottom anchor, wood boards and I-steel, working personnel on a working face should not be too much, the knocking of the upper part and the lower part of the upper part should be carefully observed, and the upper part and the lower part of the lower part should be abnormal and timely treated.
Step P6, small-section tunneling of the distribution chamber: after the step P4 and the step P5 are completed, tunneling along the small section of the distribution chamber 9, transferring the gangue through the gangue discharging hopper at the lower opening of the gangue sliding chute 3 to the gangue discharging hopper in the adhesive tape inclined shaft 1 skip, and discharging the gangue.
And P7, constructing a No. 1 connecting channel 10 after the step P6 is completed, and transferring and storing gangue through a gangue unloading hopper at the lower opening of the gangue sliding chute 3 to the inside of the 1 skip of the adhesive tape inclined shaft to discharge gangue.
Step P8, tunneling a large piece of tunnel with a small section: and (3) after the step (P7) is completed, carrying out small-section tunneling on the large channel 11, transferring and storing gangue through a gangue discharging funnel at the lower opening of the gangue sliding chute 3 to the inside of the skip of the adhesive tape inclined shaft 1, and discharging gangue.
Step P9, tunneling the small section of the lifting chamber at the upper part of the tail large part of the inclined shaft of the adhesive tape upwards to the top of the chamber: and (3) after the step (P8) is completed, tunneling upwards along the small section of the lifting chamber 12 at the upper part of the large part of the tail of the inclined shaft of the adhesive tape to the top of the chamber, and transferring the gangue through the gangue discharging hopper at the lower opening of the gangue sliding chute 3 to the gangue discharging hopper of the inclined shaft of the adhesive tape 1.
Step P10, construction of a feeding belt channel and a large well at the tail of the feeding belt channel: when the adhesive tape inclined shaft is constructed to a position about 5m away from the feeding belt channel 13, the shaft is firstly dug and layered, the tunneling bottom is lifted, and the adhesive tape inclined shaft can be made to be horizontal, and the horizontal is level with the bottom plate of the feeding belt channel 13 or slightly lower. And (3) gangue is discharged by using the adhesive tape inclined shaft 1 rock raking machine, the ore feeding belt channel 13 is directly dug out and supported, and meanwhile, the small reverse shaft at the center of the large tail shaft 14 is reversely dug to the horizontal of the crushing chamber 5 and is spread and brushed.
And P11, constructing a No. 3 connecting channel 15, and discharging gangue by using a inclined shaft rock raking machine.
Step P12, construction of a small reverse well at the center of a large well at the tail part of the inclined shaft of the adhesive tape: and (3) after the step (P11) is completed, performing small-center reverse well construction on the large well 16 at the tail part of the inclined shaft of the adhesive tape, and discharging gangue by using the inclined shaft rock raking machine.
And P13, constructing a lifting chamber at the upper part of the large tail part of the inclined shaft of the adhesive tape: the tunneling height of the lifting chamber is 10.85m, the tunneling width is 6.2 multiplied by 4.9m, the concrete supporting thickness is 300mm, the lifting chamber adopts a chute from a large-piece passage 11 small-section roadway (avoiding the position of a large-piece well and a small-reverse well) to the top of the chamber, then the top is subjected to layered brushing construction, the gangue slides from the chute to the level of the crushing chamber 5, and the gangue is transferred and stored into a skip of the adhesive tape inclined shaft 1 through a gangue chute 3 lower opening gangue unloading funnel to be discharged.
And (3) performing anchor net temporary support after layered tunneling, and performing permanent support from bottom to top after all the chambers are excavated.
Step P14, spreading and brushing construction of a large well at the tail part of the inclined shaft of the adhesive tape: the tail large well 16 of the adhesive tape inclined well is brushed downwards from the center small reverse well of the tail large well, and gangue is discharged by the inclined well rock raking machine.
Step P15, carrying out expansion brushing support construction on a drop shaft and a raw ore bin: and (3) brushing downwards from the level of-100 m, horizontally arranging a simple sealing disc, a simple derrick and 4 phi 300mm head pulleys in the level of-100 m, and arranging two 5-ton stabilizing vehicles and two 3-ton stabilizing vehicles in the unloading chambers 20 and 25. The phi 159mmPVC pipe is adopted to convey concrete, and the stirring is carried out at the wellhead of a forced stirrer with the diameter of 0.15m 3. The air pressing pipe is a 2 inch rubber pipe, the water supply pipe is a1 inch rubber pipe, the phi 300mm rubber air cylinder supplies air, and the air cylinder wall is hung. The working face is drilled by adopting YTP-26, a metal combined template is used for supporting, gangue is filled in a measure section courtyard, and then slides to the level of a crushing chamber 5 through inclined sections of a drop shaft 6 and 7, a dumping chamber 23 and a small back shaft of a raw ore bin 8, and is rotated into a gangue chute 3; when the main drop shafts 6 and 7 are used for expanding and brushing support construction to the inclined section, a side anchor is used as a detachable half-side platform at the variable section position, the platform is used for brushing the inclined section drop shaft, most of working face gangue is blasted and then is slipped down from the small reverse well, and the rest is manually cleaned. Gangue slides to the crushing chamber 5 through the inclined sections of the main drop shafts 6 and 7, the dumping chamber 23 and the small back shaft of the raw ore bin 8, and is transferred to the gangue chute 3; before the raw ore bin 8 is brushed and supported, the ore bin side part of the-200 m middle section ore discharging chamber 22 can be firstly constructed, then the-200 m middle section ore discharging chamber 22 is used as a platform to downwards brush and construct the raw ore bin 8, a well mouth of the-200 m middle section is simply sealed, a rope ladder is adopted for personnel to go up and down, a PVC pipe is put down again to serve as an ash chute, a wire rope well wall is used for hanging, and concrete is transferred into the new ash chute in the-200 middle section ore discharging chamber 22 and put down to a working face. The air-water pipe and the air duct are connected with the upper drop shaft in an extending way, and are suspended on the wire rope well wall in the raw ore bin 8; the branch drop shafts 19 and 24 only synchronously support 2-3 m of expansion brushes at the side mouths of the main drop shafts and the main drop shafts, and the rest parts are constructed by downward expansion brushes from the upper parts of the branch drop shafts 19 and 24.
Before the vertical section concrete of drop shaft 6, 7 is strutted and stabilized, use the pneumatic pick to chisel the bottom around the pit shaft, the template needs to be seated on the solid rock, must not unsettled. The bottom of the template is to be plugged, and the template is to be firmly supported. If the center courtyard is deviated, the template is suspended, an anchor rod can be additionally arranged at the bottom of the shaft, and a backing plate is added for stabilizing the template. The waste rock in the courtyard is completely discharged, so that the waste rock and concrete slurry leaked from the upper part are prevented from being hardened together, and the courtyard is blocked. When the inclined section drop shaft is used for expanding brushing construction, the working surface is made to be horizontal as much as possible, so that the drilling operation is facilitated. The bottom of each supporting frame is also in a horizontal state, and the drop shaft and the hopper opening 1m of the raw ore bin are synchronously supported with the chamber of the ore feeder.
Step P16, construction of a feeder chamber: after the construction of the chute breaking system is finished, firstly constructing a feeder chamber 4, firstly, carrying out upward roof-lifting construction on a small-section channel, then layering on the small-section channel after the small-section channel is lifted to the top of the chamber, carrying out anchor net temporary support on the upper layering, carrying out lower layering and temporary support on the upper layering, and carrying out support from bottom to top after the whole section is dredged.
Before the construction of the feeder chamber 4, the hopper opening of the raw ore bin 8 is blocked by adopting a steel beam and a wood plate so as to prevent falling objects from injuring people. The reserved support section of the hopper of the raw ore bin 8 is synchronously supported with the arch part of the feeder chamber 4. The wall part is supported by a wood template, the arch part is supported by channel steel arch tires and arch tire plates, and a support platform is arranged by a frame pipe.
Step P17, construction of a distribution chamber: after the ore feeder chamber 4 is constructed, a power distribution chamber 9 is constructed, the section of the power distribution chamber 9 is small, the power distribution chamber 9 can be brushed in place at one time and then supported, and gangue is transferred and stored into a skip of the adhesive tape inclined shaft 1 through a gangue discharging funnel at the lower opening of the gangue chute 3.
The connection 1m between the feeder chamber 4, the distribution chamber 9 and the crushing chamber 5 is synchronously supported with the crushing chamber 5.
Step P18, dust removal chamber construction: the dust removing chamber 17 is constructed by adopting a layering method, and after the upper layering tunneling and supporting are finished, the lower layering and supporting are constructed, and the lower layering and the first layering of the pilot tunnel on the left side of the crushing chamber 5 are synchronously constructed. During lower layering construction, the rock columns at the opening of the chamber and below the steps are protected, and gangue is transferred and stored into the skip of the adhesive tape inclined shaft 1 through the gangue discharging hopper at the lower opening of the gangue sliding chute 3.
And simultaneously with the construction of the dust-removing chamber 17, a number 2 communication channel 18 is constructed from the dust-removing chamber 17 by about 3m. The joint 1m of the dedusting chamber 17 and the crushing chamber 5 is synchronously supported with the crushing chamber 5.
Step P19, crushing chamber construction: the crushing chamber 5 is dug to 10.5m wide, 15.8m high and 21m long and is supported by reinforced concrete, the chamber is constructed by adopting a pilot tunnel layering method, and before the crushing chamber 5 is constructed, the surrounding chambers are constructed completely, so that a wider construction place is formed, and the construction is facilitated. The pilot tunnel 26 and 27 on the left and right sides of the tunnel are constructed with a width of 3.5m, and the reserved rock pillar 28 in the middle is 3.5m wide. The pilot tunnel is constructed by layering and jacking from bottom to top, each side of the pilot tunnel is divided into three layers, the layering height is 4.5m, and the pilot tunnels 26 and 27 on the left side and the right side are constructed in parallel in a layering manner. The top is picked twice in each layer, and the waste rock is filled from one end of the chamber to the other end of the chamber, and the lower layer can be used as an operation platform for upper layer construction. When the roof is lifted to reach the layered height, the gangue in the layered is emptied, the steel bars are bound, the formwork is erected and concrete is poured, and the wall is supported by adopting a wood formwork. The ground concrete is fed to the connecting measure lane 2 by adopting a mine car, is fed to the rear of the rock raking machine, and is manually carried to the working face for material mixing and pouring. And a rock raking machine is arranged in the ore feeder chamber 4, and the gangue is directly raked into the gangue chute 3. When the pilot tunnel is constructed to the arch layer in a layered manner, roof-picking construction is carried out from one end of the tunnel chamber to the other end, one side of the arch layer is firstly subjected to roof-picking construction, and temporary support is carried out by anchor net spraying. And then the other side of the arch layer is constructed by picking the top, the anchor net is sprayed for temporary support, and after the tunneling of the left side and the right side of the arch layer is finished, steel bars are bound, and the concrete is poured in a stable mode. The arch part adopts an I-steel arch tire and a channel steel arch tire plate for supporting. After the chamber arch and wall support is finished, rock columns 28 are reserved in the center of the chamber from top to bottom in a layered manner, holes are drilled firstly, then gangue at two sides of guide chambers 26 and 27 is discharged according to the layered height and then blasted for breaking, the breaking height is 2-4 m each time, and reinforcing steel bars of end walls at two sides are bound and a stable mould is used for casting concrete support while the central rock columns 28 are broken in a layered manner.
When the pilot tunnel is constructed, in order to ensure the construction quality of the concrete and accelerate the construction speed, the roof-picking operation is carried out without disassembling the wall mould after the construction of the wall concrete is finished and the initial strength is reached, and the wall mould protects the concrete from being damaged by the impact of blasting rocks.
And step P20, large-piece road construction: and after the construction of each chamber and the chute breaking system is finished, the construction of the large piece of the tunnel 11 is carried out.
Step P21, no. 2 contact road construction: and after the construction of the large road 11 is completed, carrying out construction of a No. 2 connecting road 18, and carrying out construction of the No. 2 connecting road 18 from the opening of the large road 11.
Claims (8)
1. The construction method of the crushing chamber system engineering is characterized by comprising the following steps of:
Step P1, constructing a communication measure roadway between the inclined shaft of the adhesive tape and the chamber of the ore feeder: when the adhesive tape inclined shaft is constructed to the position of the connecting measure roadway, the connecting measure roadway is excavated;
Step P2, construction of a gangue sliding chute between the adhesive tape inclined shaft and the ore feeder chamber: the rubber belt inclined shaft is continuously excavated, and when the inclined shaft is excavated to the position of the gangue chute, the gangue chute is reversely excavated and communicated with the communication measure lane;
Step P3, small-section construction of a chamber of the ore feeder: along the small section construction of the feeder chamber, the gangue is transferred and stored into the skip of the inclined shaft of the adhesive tape through the gangue discharging funnel at the lower opening of the gangue chute to be discharged;
Step P4, small-section tunneling of the crushing chamber: tunneling along the small section of the crushing chamber, transferring the gangue to a gangue discharging hopper at the lower opening of the gangue sliding chute, and discharging the gangue into a skip of the inclined shaft of the adhesive tape;
And P5, constructing two main drop shafts, a raw ore bin drop shaft and two drop shaft center hanging pot holes: digging out the position of the raise by adopting a lifting tank back-well construction method, punching two raise center lifting tank holes, punching the center lifting tank holes by adopting a geological drilling machine, and turning the gangue into a gangue sliding chute nearby after the gangue slides to the crushing chamber from the working surface to be horizontal, and lifting the gangue into an adhesive tape inclined shaft skip; the main drop shaft inclined part, the branch drop shaft and the raw ore bin are constructed by adopting a common back shaft method, the main drop shaft inclined part and the small back shaft in the center of the raw ore bin are reversely dug upwards from the ore feeder chamber, when the small back shaft in the center of the raw ore bin is dug to the main drop shaft inclined part, the branches reversely dug the small back shafts of the 1 # and 2 # main drop shaft inclined parts to two sides and are communicated with the main drop shaft courtyard, and gangue slides to the ore feeder chamber along the small back shaft and slides into the gangue chute nearby; when the main drop shaft is brushed to the position of the branch drop shaft, reversely digging a small reverse shaft of the branch drop shaft to the ore discharging chamber;
step P6, small-section tunneling of the distribution chamber: tunneling along the small section of the distribution chamber, transferring the gangue to a gangue discharging hopper at the lower opening of the gangue sliding chute, and discharging the gangue into a skip of the inclined shaft of the adhesive tape;
step P7, no.1 contact road construction: carrying out construction of a No.1 connecting channel, transferring waste rock to a waste rock storage hopper through a waste rock discharging hopper at the lower opening of a waste rock chute, and discharging waste rock into a skip of an inclined shaft of an adhesive tape;
step P8, tunneling a large piece of tunnel with a small section: carrying out large-piece small-section tunneling, and transferring waste rock to a waste rock discharging hopper at the lower opening of the waste rock sliding chute to discharge waste rock in a skip of the inclined shaft;
step P9, tunneling the small section of the lifting chamber at the upper part of the tail large part of the inclined shaft of the adhesive tape upwards to the top of the chamber: tunneling upwards along the small section of the lifting chamber at the upper part of the large part of the tail of the inclined shaft of the adhesive tape to the top of the chamber, transferring and storing gangue through the gangue discharging hopper at the lower opening of the gangue sliding chute to discharge gangue in the skip of the inclined shaft of the adhesive tape;
Step P10, construction of a feeding belt channel and a large well at the tail of the feeding belt channel: when the adhesive tape inclined shaft is constructed to a position 5m away from the feeding belt channel, firstly, the shaft is dug up for layering, the tunneling bottom is lifted to be horizontal, the horizontal is leveled with the bottom plate of the feeding belt channel, the inclined shaft rock raking machine is utilized to discharge gangue, the feeding belt channel is directly dug out and supported, and meanwhile, the center small reverse shaft of the big shaft at the tail part of the inclined shaft is dug back to the horizontal of the crushing chamber and is spread and brushed;
P11, constructing a No. 3 connecting channel, and discharging gangue by using a inclined shaft rock raking machine;
Step P12, construction of a small reverse well at the center of a large well at the tail part of the inclined shaft of the adhesive tape: performing the construction of a small reverse well at the center of a large well at the tail part of the inclined shaft of the adhesive tape, and discharging gangue by using a rock raking machine of the inclined shaft;
And P13, constructing a lifting chamber at the upper part of the large tail part of the inclined shaft of the adhesive tape: the lifting chamber adopts a chute from a large-piece small-section roadway to the top of the chamber, the chute avoids the small reverse well position of the large-piece well, then the top is subjected to layered expansion brushing construction, the gangue slides from the chute to the horizontal of the crushing chamber, and the gangue is transferred and stored into a skip of the adhesive tape inclined well through a gangue sliding chute lower opening gangue discharging funnel to be discharged;
Step P14, spreading and brushing construction of a large well at the tail part of the inclined shaft of the adhesive tape: the tail large well of the adhesive tape inclined well is brushed downwards from the center small reverse well of the tail large well, and gangue is discharged by using an inclined well rock raking machine;
Step P15, carrying out expansion brushing support construction on a drop shaft and a raw ore bin: the vertical section of the main drop shaft is horizontally and downwards brushed, gangue is filled in the measure section drop shaft, then, the drop shaft, the dumping chamber and the small back shaft of the raw ore bin slide to the crushing level through the inclined section drop shaft and the small back shaft of the raw ore bin, and the drop shaft is transferred into the gangue chute; when the main drop shaft is spread to the inclined section for supporting construction, a detachable half-side platform is made by using a binding anchor at the position of the variable section, and the drop shaft of the inclined section is constructed by using the lower brush of the platform; before the raw ore bin is subjected to expanding brushing and supporting, constructing an ore bin side part of a middle section ore discharging chamber, and then taking the ore discharging chamber as a platform to downwards expand brushing and construct the raw ore bin; the branch drop shafts only synchronously support 2-3 m of expansion brushes at the side mouths of the main drop shafts and the main drop shafts, and the rest parts are constructed by downward expansion brushes from the upper parts of the branch drop shafts;
Step P16, construction of a feeder chamber: constructing a feeder chamber, namely firstly carrying out upward roof-lifting construction on a small-section channel, then carrying out expansion brushing on the small-section channel to construct a chamber layer by layer after the small-section channel is lifted to the top of the chamber, carrying out anchor net temporary support on the upper layer by layer, carrying out expansion brushing on the lower layer by layer and carrying out temporary support, and carrying out support from bottom to top after the full section is dug out;
Step P17, construction of a distribution chamber: constructing a power distribution chamber, performing one-time expanding brushing on the power distribution chamber, and supporting the power distribution chamber, transferring waste rock to a waste rock discharging hopper at the lower opening of a waste rock chute, and discharging the waste rock into a skip of the inclined shaft;
Step P18, dust removal chamber construction: constructing by adopting a layering method, firstly tunneling and supporting in an upper layering mode, then constructing and supporting in a lower layering mode, and synchronously constructing the lower layering mode and a first layering mode of a pilot tunnel on the left side of a crushing chamber; during lower layering construction, protecting a platform at the opening of the chamber and rock columns below the steps, and transferring waste rock to a waste rock discharging hopper at the lower opening of a waste rock chute to discharge waste rock in a skip of the inclined shaft;
step P19, crushing chamber construction: constructing by adopting a pilot tunnel layering method, and finishing the construction of peripheral chambers before the construction of the crushing chambers to form a wide construction site so as to facilitate the construction, and transferring waste rock from a waste rock discharging hopper at the lower opening of a waste rock chute to a waste rock discharging hopper of an adhesive tape inclined shaft;
And step P20, large-piece road construction: after the construction of each chamber and the sliding breaking system is finished, carrying out large-piece road construction;
Step P21, no. 2 contact road construction: and carrying out construction of a No. 2 connecting road, and constructing the No. 2 connecting road from the opening of the large road.
2. The construction method of the crushing chamber system engineering according to claim 1, wherein in the step P5, for the construction of the vertical portion of the main drop shaft, a hanging tank reverse well construction method is adopted to excavate the position of the drop shaft, the drop shaft is ventilated through a hanging tank hole, only two persons work on the hanging tank, when the hanging tank runs up and down, a top protection umbrella is opened, operators observe the well wall at any time, loose gangue is found, the tank is immediately stopped for treatment, and when the tank reaches a top working face, the operators stand under the protection umbrella to treat the top plate; because of the hanging pot Kong Pianxie, the hanging pot collides with the well wall when being up and down, personnel tie up the safety belt, and the pot is immediately stopped for treatment when the hanging pot collides; and for the inclined part of the main drop shaft, the branch drop shaft and the raw ore bin, a common reverse well method is adopted for construction, a working platform is built by using a wall anchor, a bottom anchor, channel steel and a wood board, before blasting, the wall anchor and the bottom anchor of the upper layer of platform are perforated and installed, the distance between the two layers of platforms is controlled between 1.2 and 1.5m, I-steel of the platform and the wall anchor and the bottom anchor are firmly bound by iron wires, the wood board and the I-steel are firmly bound by two persons on a working surface, the top of the working surface is knocked down, when the persons go up and down, the loose stones of the top and the bottom board are carefully observed, the abnormity is found, and the working surface is treated in time.
3. The method for constructing a crushing chamber system engineering according to claim 1, wherein in the step P13, temporary supporting is performed by anchor net spraying after layered tunneling, and permanent supporting is performed from bottom to top after the chamber is completely excavated.
4. The construction method of a crushing chamber system engineering according to claim 1, wherein in the step P15, before the vertical section drop shaft concrete is supported and stabilized, the bottom of the periphery of the shaft is leveled by a pneumatic pick, and the template is set on the solid rock and cannot be suspended; the bottom of the template is plugged, and the template is firmly supported; if the template is suspended because of the deviated edge of the central courtyard, an anchor rod is additionally arranged at the bottom of the shaft, and a backing plate is added for stabilizing the template; when the inclined section drop shaft is used for expanding brushing construction, the working surface is made to be horizontal, so that the drilling operation is facilitated; the bottom of each supporting frame is in a horizontal state, and the drop shaft and the hopper opening 1m of the raw ore bin are synchronously supported with the chamber.
5. The method for constructing the crushing chamber system engineering according to claim 1, wherein in the step P16, before the construction of the ore feeder chamber, steel beams and wood plates are adopted to seal the hopper opening of the raw ore bin so as to prevent falling objects from injuring people; the reserved support section of the raw ore bin hopper supports synchronously with the arch part of the ore feeder chamber; the wall part is supported by a wood template, the arch part is supported by channel steel arch tires and arch tire plates, and a support platform is arranged by a frame pipe.
6. The method for constructing a crushing chamber system according to claim 1, wherein in the step P17, the feeder chamber, the junction 1m between the distribution chamber and the crushing chamber is synchronously supported with the crushing chamber.
7. The construction method of crushing chamber system engineering according to claim 1, wherein in the step P18, a number 2 communication channel 3m is constructed from the dust removal chamber while the dust removal chamber is constructed; the joint 1m of the dedusting chamber and the crushing chamber is synchronously supported with the crushing chamber.
8. The method according to claim 1, wherein in step P19, in order to ensure the construction quality of the concrete and to increase the construction speed during pilot tunnel construction, the construction is performed without removing the wall form after the construction of the wall concrete is completed and the initial strength is reached, and the wall form protects the concrete from the impact of blasted rock.
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| CN109630131A (en) * | 2018-11-16 | 2019-04-16 | 西北矿冶研究院 | Underground chamber construction method |
| CN110067595A (en) * | 2019-05-24 | 2019-07-30 | 中冶北方（大连）工程技术有限公司 | A kind of broken continuous haulage system of Block caving system dispersion |
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| CN111852482B (en) * | 2020-07-31 | 2022-04-01 | 湖南科技大学 | Construction method of ore crusher foundation of slip-breaking system engineering below 40m |
| CN214499097U (en) * | 2021-02-24 | 2021-10-26 | 金诚信矿业管理股份有限公司 | Layered construction device of bottom-side unloading type unloading station |
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| CN110067595A (en) * | 2019-05-24 | 2019-07-30 | 中冶北方（大连）工程技术有限公司 | A kind of broken continuous haulage system of Block caving system dispersion |
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