CN203008937U - Anchor rod connecting chain - Google Patents
Anchor rod connecting chain Download PDFInfo
- Publication number
- CN203008937U CN203008937U CN 201220686899 CN201220686899U CN203008937U CN 203008937 U CN203008937 U CN 203008937U CN 201220686899 CN201220686899 CN 201220686899 CN 201220686899 U CN201220686899 U CN 201220686899U CN 203008937 U CN203008937 U CN 203008937U
- Authority
- CN
- China
- Prior art keywords
- connecting chain
- bolt
- installation hole
- bolt connecting
- reinforcing bar
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000009434 installation Methods 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 230000002787 reinforcement Effects 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 20
- 238000010276 construction Methods 0.000 abstract description 12
- 230000003014 reinforcing effect Effects 0.000 description 20
- 230000008093 supporting effect Effects 0.000 description 9
- 230000006378 damage Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 231100000241 scar Toxicity 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000009514 concussion Effects 0.000 description 1
- -1 contains diorite Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
本实用新型设计的锚杆联系链，它包括至少两根平行间隔设置在同一平面内的钢筋，相邻钢筋之间通过沿其轴向成对布置的短杆焊接相连，每对短杆和相邻钢筋合围构成锚杆安装孔。本实用新型易于操作，支护及时，可紧贴岩面，避免应力集中于一处，给施工带来了很大的便利，提高了施工效率。
The bolt connection chain designed by the utility model includes at least two parallel steel bars arranged in the same plane at intervals. The surrounding steel bars form the anchor installation hole. The utility model is easy to operate, supports in time, can be close to the rock surface, avoids stress concentration in one place, brings great convenience to construction, and improves construction efficiency.
Description
Technical field
The utility model belongs to tunnel and underground construction Roadway Support Technology field, is specifically related to a kind of bolt connecting chain.
Background technology
Roadway surrounding rock mainly contains diorite, granite, marble, skarn, block magnetic iron ore and fine ore,, porosity loosely organized due to fine ore greatly, very easily inbreak, belong to utmost point ore built on the sand; And skarn facile hydrolysis and collapsing; If structure destruction or developmental joint fissure are arranged in the tunnel, stability of the roadway reduces greatly, on the stability of the roadway impact larger mainly be configured with tomography, joint and ore deposit rock contact zones, the on-the-spot geological conditions more complicated of visible tunnel and underground construction.In stope take nearly north-south tension-shear fault and northwest (NW) west barotropism, press wrench fault as main, grow very much at the fault belt joint fissure, and usually being many groups is interspersed, cutting to the ore deposit rock is very serious, be in all very easily inbreaks of country rock of the whatsoever lithology in fault zone, therefore, fault belt is the key area of support work.
At ore deposit rock contact zones, due to mineralization, the wall rock alteration phenomenon is very serious, and lithology is soft, is easy to hydrolysis under the effect of underground water, and the cohesive force of rock mass is descended, and is easy under the effect of concussion of blasting and deadweight, inbreak occur.The scale of this class inbreak is usually less than fault belt, but the inbreak frequency is very high, is also the emphasis of supporting.
Area of stress concentration has two kinds of situations usually, a kind of is isolated ore pillar under residual in recovery process, become the arch springing of caving arch, cause that stress is concentrated: another kind is crosspoint, the corner, tunnel in tunnel. and near intensive area (drop shaft), tunnel.The common feature at these positions is, the tunnel is larger to the dissection of rock mass, and the effective area of passive country rock is reduced, and stress increases, and also is easy to occur the country rock inbreak.
Prior art adopts zone of fracture roadway support to carry out merely combined bolting and shotcrete, but can not effectively reach the purpose of safety in production, also needs to install steel mesh reinforcement.And when steel mesh reinforcement was installed, the workpeople must scaffolding, and will weld.Construct more loaded down with trivial details: when the construction of paving steel mesh reinforcement, other work can not be carried out, and cause poor in timeliness.Therefore, lapping construction, can only wait until that whole piece route driving is complete just can carry out, and it is very inconvenient to operate, and labour intensity is large, has dragged slowly construction speed.
Summary of the invention
The purpose of this utility model is in order to overcome defects, a kind of easy construction, easy operating, the firm bolt connecting chain of supporting to be provided.
For achieving the above object, the bolt connecting chain of the utility model design, it comprises that at least two parallel interval are arranged on the reinforcing bar in same plane, and between adjacent reinforcing bar, by being weldingly connected along its axial quarter butt arranged in pairs, the every pair of quarter butt and adjacent steel adhesion of tendon and muscle after injury enclose and consist of the rockbolt installation hole.
Further, described every pair of quarter butt and adjacent steel adhesion of tendon and muscle after injury enclose the rockbolt installation hole that consists of rectangle.
Again further, described rockbolt installation hole axially evenly distributing along reinforcing bar.
Again further, described rockbolt installation pore size distribution is at two ends and the middle part of reinforcing bar.
Further, the diameter of described reinforcing bar and quarter butt is 6 ~ 8mm, and described rockbolt installation hole is square, and its length of side is 60mm, and the distance between described rockbolt installation hole is 600 ~ 800mm.
The bolt connecting chain that the utility model is designed, but the use of friction fit anchor pole consists of a kind of new support pattern, uses the characteristics that the utlity model has a lot of uniquenesses:
One, easy operating bring great convenience to construction: the installation of bolt connecting chain is very convenient, only needs the requirement according to the design grid degree, can construct.When the friction anchor pole is installed, the rockbolt installation aperture on the utility model is enclosed within on anchor pole, after rockbolt installation, bolt connecting chain just by ground nail tightly on the crag.This job practices has improved efficiency of construction, has alleviated widely workman's labour intensity.
Two, supporting is timely, can in time provide support counter-force.Because the construction of bolt connecting chain is very fast easy, can when tunnelling,, carry out immediately following work plane with propping up with pick, coordinate in time again sprayed mortar, can provide support counter-force to country rock rapidly, improve the stress state of country rock, make country rock from two to stress, become triaxial stress state, thereby improve the self-supporting ability of country rock, make the stability in tunnel obtain certain raising, supporting effect has obtained very large improvement.
Three, scar is close in the bolt connecting chain supporting, has disperseed stress, avoids stress to concentrate on a place.Due to bolt connecting chain be by the friction anchor pole supporting plate be securely fixed on scar, so that the contact chain active force of anchor pole is distributed to other places of top board and crag, the point effect of contraction of anchor pole is assigned on face, has improved the force-bearing situation of country rock, reduced stress and concentrated.
In sum, the utility model can improve the globality of roadway support, reduces the generation of roof collapse and wall caving, saves support cost, and high application value is being arranged aspect the underworkings supporting.
Description of drawings
Fig. 1 is the bolt connecting chain cross-sectional view in embodiment 1;
Fig. 2 is the bolt connecting chain cross-sectional view in embodiment 2;
In figure: reinforcing bar 1, installing hole 2, quarter butt 3.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
Bolt connecting chain as shown in Figure 1 comprises between 1, two reinforcing bar 1 of reinforcing bar that two parallel interval arrange by being weldingly connected along its axial quarter butt 3 arranged in pairs, and the every pair of quarter butt 3 and adjacent reinforcing bar 1 surround and consist of rockbolt installation hole 2.The axial line of quarter butt 3 is perpendicular to the axial line of reinforcing bar 1, and the every pair of quarter butt 3 and adjacent reinforcing bar 1 surround the rockbolt installation hole 2 that consists of rectangle.Rockbolt installation hole 2 is distributed in two ends and the middle part of reinforcing bar 1, and the diameter of reinforcing bar 1 and quarter butt 3 is 8mm, and the length of the minor face in rockbolt installation hole 2 is 60mm, and the distance between rockbolt installation hole 2 is 800mm.
Bolt connecting chain as shown in Figure 2 comprises that four parallel interval are arranged on the reinforcing bar 1 in same plane, and between two adjacent reinforcing bars 1, by being welded to connect along its axial quarter butt 3 arranged in pairs, the every pair of quarter butt 3 and adjacent reinforcing bar 1 surround and consist of rockbolt installation hole 2.The axial line of quarter butt 3 is perpendicular to the axial line of reinforcing bar 1, and the every pair of quarter butt 3 and adjacent reinforcing bar 1 surround and consist of foursquare rockbolt installation hole 2.Rockbolt installation hole 2 axially evenly distributes along reinforcing bar 1.The diameter of reinforcing bar 1 and quarter butt 3 is 6mm, and the length of side in rockbolt installation hole 2 is 60mm, and the distance between adjacent two rockbolt installation holes 2 is 600mm.
The utility model use procedure is as follows:
During construction, bolt connecting chain together uses with friction anchor pole and backing plate.When carrying out rockbolt installation, first with anchor pole from the rockbolt installation hole of bolt connecting chain 2 mouthfuls penetrate, then squeeze in the bolthole of rock mass, the backing plate of end of anchor rod is pressed on bolt connecting chain on crag, adopt 3-4 anchor poles, a bolt connecting chain can be arranged on top board, bolt connecting chain and anchor pole form Composite Supporting System, common supporting country rock.
On integral arrangement, bolt connecting chain both can move towards along the tunnel to arrange, but vertical working move towards layout again, also oblique layout according to circumstances.Bolt connecting chain becomes the anchor pole independent role into anchor pole and acts in groups, make Bolt Groups become organic whole, greatly improved the self-supporting ability of country rock: and bolt connecting chain can be installed immediately following work plane, can in time bring into play support action, and the country rock of anchor pole threshould is provided constraint, reduces the generation of tensile stress, thereby avoid the part to collapse and cause large inbreak to occur.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220686899 CN203008937U (en) | 2012-12-12 | 2012-12-12 | Anchor rod connecting chain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220686899 CN203008937U (en) | 2012-12-12 | 2012-12-12 | Anchor rod connecting chain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203008937U true CN203008937U (en) | 2013-06-19 |
Family
ID=48600543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220686899 Expired - Fee Related CN203008937U (en) | 2012-12-12 | 2012-12-12 | Anchor rod connecting chain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203008937U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042138A (en) * | 2019-12-13 | 2020-04-21 | 四川共拓岩土科技股份有限公司 | Orifice tube device interactive fixing method |
-
2012
- 2012-12-12 CN CN 201220686899 patent/CN203008937U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111042138A (en) * | 2019-12-13 | 2020-04-21 | 四川共拓岩土科技股份有限公司 | Orifice tube device interactive fixing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20130619 Termination date: 20171212 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |