CN203145974U - Crosswise-arranged U-shaped through anchor coal and rock pillar supporting device - Google Patents
Crosswise-arranged U-shaped through anchor coal and rock pillar supporting device Download PDFInfo
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- CN203145974U CN203145974U CN 201320022808 CN201320022808U CN203145974U CN 203145974 U CN203145974 U CN 203145974U CN 201320022808 CN201320022808 CN 201320022808 CN 201320022808 U CN201320022808 U CN 201320022808U CN 203145974 U CN203145974 U CN 203145974U
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Abstract
一种交叉布置的U型对穿锚煤岩柱支护装置，由多组间隔排列固定在煤岩柱两侧壁上的U型锚构成，所述的U型锚包括呈十字形交叉对穿的U型对穿锚一和U型对穿锚二，U型对穿锚一与巷道走向呈45°布置，U型对穿锚二与巷道走向呈135°布置，两个U型对穿锚的端头分居于煤岩柱两侧，经U型对穿锚端头联接器紧固。在岩体内形成两个倾斜方向的环形挤压应力圈。相邻的U型对穿锚同样端头分居于煤岩柱两侧布置，只不过对应孔位反向布置，以避免煤岩体内部分区域过于应力集中。其结构简单，支护范围广，能有效控制两帮变形，保证了高产高效矿井的采掘接替，适用于较窄的两巷间煤岩柱加固，也可适用于大巷或者大巷与上下方硐室的长期支护。
A cross-arranged U-shaped cross-piercing anchor coal pillar support device is composed of multiple sets of U-shaped anchors arranged at intervals and fixed on the two side walls of the coal pillar. The U-shaped anchors include cross-shaped cross-penetration U-shaped cross-piercing anchor 1 and U-shaped cross-piercing anchor 2, U-shaped cross-piercing anchor 1 is arranged at 45° to the direction of the roadway, U-shaped cross-piercing anchor 2 is arranged at 135° to the direction of the roadway, and the two U-shaped cross-piercing anchors The ends of the coal and rock pillars are separated on both sides, and are fastened by U-shaped cross-piercing anchor end connectors. Two ring-shaped compressive stress circles in inclined directions are formed in the rock mass. The ends of the adjacent U-shaped cross-piercing anchors are also arranged separately on both sides of the coal and rock pillars, but the corresponding holes are arranged in reverse to avoid excessive stress concentration in some areas of the coal and rock body. Its structure is simple, the support range is wide, and it can effectively control the deformation of the two sides, ensuring the mining succession of high-yield and high-efficiency mines. It is suitable for the reinforcement of coal and rock pillars between narrower two lanes, and it is also suitable for the main road or the upper and lower roads. Long-term support of chambers.
Description
Technical field
The utility model relates to the U-shaped to wearing anchor coal petrography post suspension device of a kind of arranged crosswise, be particularly useful in the two lanes or the coal petrography post supporting between many lanes in the underground constructions such as colliery and metal mine, in also reinforcing applicable to the coal and rock between big lane and adjacent chamber thereof.
Background technology
In order to adapt to the development trend of China's high-yield and high-efficiency mine, many mining areas to produce the demand of taking over and have taked two lanes driving or many lanes driving in order to satisfy, and have greatly improved output to a certain extent.But the multi-mine roadway arranged adjacent has been brought inevitably such as how reinforcing a series of anti-destabilization problems such as coal column or rock pillar between them.What the priority in tunnel excavation applied it is repeatedly stress disturbance, so can produce bigger distortion, its consolidation process is also just demanded proposing urgently new scheme.
For a long time, conclusive effect has been played in traditional bolt support, can control its distortion to a certain extent.Bolt support is for the coal column between two tunnels, be local stiffening after all, can't give coal column with consolidation effect on the whole, also can't solve repeatedly the stability problem of coal column under the stress disturbance, particularly under the bigger situation of coal petrography post span, if anchor pole is too short, problem will be more outstanding, so still exist certain technical difficult problem.
What proposed in recent years has avoided the problems referred to above to a great extent to wearing anchor cable, anchor cable length can penetrate whole coal petrography post greatly, particularly suitable is the coal petrography post between two lanes, even can be used in big lane, reinforcing as long-term, reinforce the pipe way of ingate and top or the zone between the escape way such as some mine with it, the good effect that plays.Its cardinal principle is exactly to have utilized the high-tensile of anchor cable and the high compressive strength of coal and rock, can apply high pretightning force in coal petrography post both sides by implementing stretch-draw behind pallet and the lockset locking two ends, the distortion of opposing coal petrography post, it is as a whole that it is combined into, and effect is obvious.
From certain aspect, under deployment scenarios between above-mentioned lane, with respect to traditional bolt support great advantage is arranged to wearing anchor cable.But, from the profound level analysis, be not difficult to find out, provide along the axial pretightning force of anchor cable wearing anchor cable, there is certain restriction in the zone that acts on country rock, globality supporting for the coal petrography cylinder between the high tunnel of big section seems unable to do what one wishes with regard to some, must control its distortion to the density of wearing anchor cable by strengthening.Bring new problem so inevitably, big such as workman's amount of labour, waste of material, unfavorable factor such as economic benefit is low.
Summary of the invention
The purpose of this utility model is the weak point that overcomes in the prior art, and the U-shaped to wearing anchor coal petrography post suspension device of a kind of simple in structure, easy to operate, arranged crosswise that supporting effect is good is provided.
For achieving the above object, the utility model arranged crosswise U-shaped to wearing anchor coal petrography post suspension device, being spaced the U-shaped anchor that is fixed on the coal petrography post two side by group constitutes, described U-shaped anchor comprises that to be decussation through U-shaped to wearing anchor one and U-shaped to wearing anchor two, U-shapedly be 45 ° of layouts to wearing anchor one with the tunnel trend, U-shapedly be 135 ° of layouts to wearing anchor two with the tunnel trend, coal petrography post two side is provided with fastening the U-shaped to wearing anchor termination coupling, position, the hole reversed arrangement of adjacent coupling correspondence of U-shaped anchor of organizing respectively more.
Described U-shaped to wearing anchor termination coupling by U-shaped seat and fixingly U-shaped the hold-down nut of wearing the anchor end being constituted.
Beneficial effect: of the present utility model U-shaped more even to the stressed zone that draws anchor cable to form than linear to the annular extrusion stress distribution district of wearing anchor cable formation, favourable to coal and rock, it is also convenient relatively to construct.Overcome the weakness of bolt support coal petrography post in the prior art, namely local approximate point load, length weak point can't run through coal column, and overcome in the prior art and to be applied to the weakness in big section high tunnel to wearing anchor, be big support density, approximate point load, local extruding is installed complexity, the problem of high material consumption.Need help to install respectively tensioner two in the past and apply pretightning force to linear to drawing the anchor cable termination, the utility model can be one simultaneously in a side and U-shaped the two ends of wearing anchor be applied pretightning force.U-shapedly make up mutually wearing the extruding annular stressed zone that anchor forms, controlled the development of the inner plastic zone of coal petrography post and fracture area, limited the growth in crack in the coal petrography post, kept the stable of coal petrography post, improved the globality of surrounding rock structure, effect is fairly obvious.Adjacent two groups U-shapedly intercouple at the correspondence position upper angle to wearing anchor, efficiently solve the problem that subregion stress that support pattern may cause is too concentrated.In the supporting in high tunnel, adopt the U-shaped of one group of arranged crosswise can effectively solve about how safeguarding the great technical barrier of coal petrography column stability between the driving of two lanes or many lanes wearing anchor.Additionally the breaking surrounding rock for permanent use is aided with bolt grouting, more profound raising coal and rock stability and renitent ability.This compound mode also goes for the permanent support that big lane and adjacent chamber etc. are located.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is that profile is looked on the left side of coal petrography post among Fig. 1.
Among the figure: the 1-U type is to wearing anchor one, and the 2-U type is to wearing anchor two, and the 3-U type is to wearing anchor termination coupling.
The specific embodiment
Below in conjunction with accompanying drawing an embodiment of the present utility model is further described:
Arranged crosswise of the present utility model U-shaped to wearing anchor coal petrography post suspension device, being spaced the U-shaped anchor that is fixed on the coal petrography post two side by many groups constitutes, described U-shaped anchor comprises that to be decussation through U-shaped to wearing anchor 1 and U-shaped to wearing anchor 22, U-shapedly be 45 ° of layouts to wearing anchor 1 with the tunnel trend, U-shapedly be 135 ° of layouts to wearing anchor 22 with the tunnel trend, coal petrography post two side is provided with fastening the U-shaped to wearing anchor termination coupling 3, position, the hole reversed arrangement of adjacent coupling 3 correspondences of U-shaped anchor of organizing respectively more; Described U-shaped to wearing anchor termination coupling 3 by U-shaped seat and fixingly U-shaped the hold-down nut of wearing the anchor end being constituted.
The course of work: with anchor cable rig or the pore-creating on the lateral wall of coal petrography post between two lanes of other facility, four holes of making are approximate can form square, and vertical neighbor distance is roughly 2/3rds of head-room and is advisable.If country rock is the extreme soft broken, can beat grouted anchor bar in advance and carry out grouting and reinforcing, to treat to hole again after it condenses, slurries can adopt 525 aluminium sulfate rapid setting cement or chemical grouts.Adopt wind, water associating wash boring after boring finishes, empty coal dust or rock slag in the hole.According to U-shaped shown in Fig. 1 anchor cable is arranged in the relevant position of wearing anchor, each is one group to the U-shaped of arranged crosswise to wearing anchor.U-shaped coupling is installed in the termination of wearing anchor same, with two terminations lockings, and apply certain pretightning force with the stretch-draw instrument, will note the coal and rock distortion in the process that applies at any time, in case the expansion preexisting crack.Two adjacent groups is carried out the U-shaped of termination stretch-draw pretension and is 45 ° and 135 ° of angles with the tunnel trend is approximate respectively to wearing anchor in coal petrography post the same side, and moves towards cycle arrangement according to this regulation along the tunnel and go down.After anchor cable is installed and finished, can protect at each place's sprayed mortar of appearing according to this length of locating coal petrography post service life, prevent corrosion.As run into the very broken soft place of country rock, can add grouted anchor bar between the anchor to wearing in the U-shaped of above-mentioned arranged crosswise, with the steadiness of further raising coal and rock.
Operating principle: adopt and U-shapedly arrange in two lanes or many lanes coal petrography cylinder wearing anchor, samely U-shaped the anchor cable termination of wearing anchor is positioned at cylinder the same side, and with coupling locking, and after-applied certain pretightning force, the segmental arc of wearing anchor is positioned at the opposite side of cylinder.Simultaneously wholely U-shapedly move towards to wearing anchor and tunnel that direction is approximate to be 45, so just formed an annular fixing collar of inclination.Because to move towards direction at 45 with the tunnel, then the stress in the fixing collar can roughly be decomposed into the stress that moves towards direction along the tunnel and move towards the stress of vertical direction with the tunnel.Above-mentioned U-shaped to the basis of wearing anchor on, arranging one again with its quadrature, U-shaped arranged direction in coal and rock is just in time opposite to wearing anchor, U-shaped anchor termination one side before namely segmental arc is positioned at, and U-shaped anchor segmental arc one side of termination side before being positioned at.Because the two quadrature, the stress in the latter's the annular fixing collar also can be decomposed into the stress that moves towards direction along the tunnel and move towards the stress of vertical direction with the tunnel.Above the stack of four groups of stress mutual extrusion, add and be applied to U-shapedly to wearing the pretightning force on the anchor rod/anchor rope termination by coupling, just in the cylinder of supporting, formed the monolithic extruded stress of three-dimensional, this section cylinder is tightly pressed together.In the supporting of next section, continue the above-mentioned arrangement of circulation, unique difference is to become 135 ° with U-shaped anchor that angle at 45 is moved towards in the tunnel in this section in the preceding paragraph, moves towards into 135 ° U-shaped anchor with the tunnel in the preceding paragraph and be 45 ° in this section.So go down along moving towards cycle arrangement.
Adopt that this U-shaped the coal and rock both sides all are compressed in whole scope of freedom encirclement scope to wearing the anchor arrangement, the linear before having overcome can only form this defective of axially approximate point load compressive stress district to wearing anchor.Two circumference stress district mutual superposition have formed the three-dimensional extrusion stress in cylinder, improved mechanical property and the parameter of coal and rock, have strengthened the stability of coal petrography post and tunnel carrying between the lane, have greatly improved peak strength and the residual strength of narrow coal petrography post.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320022808 CN203145974U (en) | 2013-01-16 | 2013-01-16 | Crosswise-arranged U-shaped through anchor coal and rock pillar supporting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320022808 CN203145974U (en) | 2013-01-16 | 2013-01-16 | Crosswise-arranged U-shaped through anchor coal and rock pillar supporting device |
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| CN203145974U true CN203145974U (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320022808 Expired - Fee Related CN203145974U (en) | 2013-01-16 | 2013-01-16 | Crosswise-arranged U-shaped through anchor coal and rock pillar supporting device |
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| CN (1) | CN203145974U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218065A (en) * | 2017-08-08 | 2017-09-29 | 马浩田 | Underground intersects tunnel stub construction method |
| CN112483147A (en) * | 2020-12-25 | 2021-03-12 | 江苏宝利国际投资股份有限公司 | Opposite-penetrating double-locking anchor cable supporting system for reinforcing soft rock columns of double-hole highway tunnel |
| CN112523791A (en) * | 2020-12-25 | 2021-03-19 | 江苏宝利路面材料技术有限公司 | Annular anchor cable supporting system for reinforcing rock wall in small-clear-distance tunnel of highway |
| CN113586111A (en) * | 2021-09-08 | 2021-11-02 | 辽宁工程技术大学 | Anchor rod cable supporting method for preventing roadway from being damaged by impact |
-
2013
- 2013-01-16 CN CN 201320022808 patent/CN203145974U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107218065A (en) * | 2017-08-08 | 2017-09-29 | 马浩田 | Underground intersects tunnel stub construction method |
| CN112483147A (en) * | 2020-12-25 | 2021-03-12 | 江苏宝利国际投资股份有限公司 | Opposite-penetrating double-locking anchor cable supporting system for reinforcing soft rock columns of double-hole highway tunnel |
| CN112523791A (en) * | 2020-12-25 | 2021-03-19 | 江苏宝利路面材料技术有限公司 | Annular anchor cable supporting system for reinforcing rock wall in small-clear-distance tunnel of highway |
| CN112523791B (en) * | 2020-12-25 | 2024-05-10 | 江苏宝利路面材料技术有限公司 | Annular anchor rope supporting system for reinforcing rock wall in highway small clear distance tunnel |
| CN113586111A (en) * | 2021-09-08 | 2021-11-02 | 辽宁工程技术大学 | Anchor rod cable supporting method for preventing roadway from being damaged by impact |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20170116 |
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| CF01 | Termination of patent right due to non-payment of annual fee |