CN2903375Y - Steel reinforced concrete combined support for coalmine tunnel - Google Patents
Steel reinforced concrete combined support for coalmine tunnel Download PDFInfo
- Publication number
- CN2903375Y CN2903375Y CN 200620070171 CN200620070171U CN2903375Y CN 2903375 Y CN2903375 Y CN 2903375Y CN 200620070171 CN200620070171 CN 200620070171 CN 200620070171 U CN200620070171 U CN 200620070171U CN 2903375 Y CN2903375 Y CN 2903375Y
- Authority
- CN
- China
- Prior art keywords
- tunnel
- concrete body
- archy
- coal mine
- anchor
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims description 15
- 239000010959 steel Substances 0.000 title claims description 15
- 239000011150 reinforced concrete Substances 0.000 title abstract 2
- 239000004567 concrete Substances 0.000 claims abstract description 30
- 230000002787 reinforcement Effects 0.000 claims description 14
- 210000003205 muscle Anatomy 0.000 claims description 9
- 239000003245 coal Substances 0.000 abstract description 8
- 239000011435 rock Substances 0.000 abstract description 5
- 238000005336 cracking Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract 2
- 239000007921 spray Substances 0.000 description 8
- 239000000835 fiber Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- -1 uniform mixing Substances 0.000 description 1
Images
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model relates to a coal mine down-hole support which provides a coal mine down-hole tunnel reinforced concrete united support and comprises an anchor rod, an anchor rope and an archy concrete body. Wherein, the outer side face of the archy concrete body is evenly connected with the one end of the anchor rod and the anchor rope in radial form and the other end thereof is disposed inside the rock wall of the tunnel. The reinforcing steel skeleton is provided inside the archy concrete body. The coal mine down-hole support is characterized by low weight with 10 kilograms lower than U-shaped reinforcing steel per meter, fast speed forming the tunnel, small deformation of the tunnel with only 200-300 mm, resistance to cracking and peeling off thereby, guaranteeing human safety and requiring no repeated maintenance even with the slow sinking of the tunnel under the long-term pressure.
Description
Technical field
The utility model relates to supporting under the coal mine.
Background technology
At present, the roadway support form in rock crusher zone, China down-hole adopts " U " type steel shed support mostly, cement backboard and metal rhombus net back of the body group back of the body top; When adjoining rock stability, adopt anchor pole, anchor cable, the supporting of wire lath spray concrete.Supporting and domesticly do not have a big difference under the external coal mine.There is the supporting instability in this technical scheme, especially has the problem that side pressure is big, pucking is serious; There are to fall quarrel, scaling simultaneously, influence the problem of underground operators personal safety.
Summary of the invention
The purpose of this utility model is: provide a kind of and solve that side pressure is big, pucking, guarantee the colliery underworkings steel bar concrete combined supporting of underground work safety.
Concrete structural design scheme is as follows:
Colliery underworkings steel bar concrete combined supporting is characterized in that: comprise anchor pole 2, anchor cable 3 and arch concrete body 1; Anchor pole more than 10 is the uniform lateral surface that is being connected arch concrete body of a radial end with anchor cable more than 3, and the other end is positioned at the crag in tunnel.
Be provided with cage of reinforcement in the described arch concrete body, described cage of reinforcement comprises hogring muscle 4, connects to form a joint support by longitudinal rib 6 between the adjacent two hogring muscle 4, is connected by dowel 5 between the hogring muscle 4 of an adjacent joint support.
Useful technique effect of the present utility model is embodied in following several aspect:
1, this supporting and protection structure is in light weight, every meter lighter 10 kilograms than U type steel shed, about 80 kilograms in light weight at each joint of its cage of reinforcement than U type canopy, having alleviated operator's labour intensity greatly, used this supporting roadway deformation amount little, only is the 200-300 millimeter, the tunnel presents slow sinking under long-time pressure effect, the scaling of not ftractureing can guarantee personal safety, does not need to repeat maintenance.
2, it is fast that the utility model supporting and protection structure becomes lane speed, and U type canopy is 0.5 meter one and this supporting is one in a 0.8-1 rice, and constructing operation is easy.
3, this supporting can realize effective support to breaking roof.One deck steel fiber concrete be can spray earlier after meeting head on to dig out,, and then anchor pole and cage of reinforcement concrete secondary supporting beaten as temporary lining, very effective to the roof cracking of meeting head on, guaranteed workman's safety.
4, this kind supporting is firm durable, and is not easy to crack, and quarrel is fallen in not scaling, and long-term bearing load ability is strong, and good toughness can not become piece to drop, and also do not fall quarrel even be cleaved into small gap, guaranteed constructor's safety.
Description of drawings
Fig. 1 is the utility model structural representation,
Fig. 2 is the utility model structural representation with cage of reinforcement,
Fig. 3 be the A of Fig. 2 to view,
Fig. 4 is the B-B sectional view of Fig. 3.
The specific embodiment
Below in conjunction with accompanying drawing, the utility model is further described by embodiment.
Embodiment 1:
Colliery underworkings steel bar concrete combined supporting comprises anchor pole 2, anchor cable 3 and arch concrete body 1; Anchor pole 2 more than 10 is the uniform lateral surface that is being connected arch concrete body 3 of a radial end with the anchor cable 3 more than 3, and the other end is positioned at the crag in tunnel.See Fig. 1.
After work plane meets head on to excavate outline line, look for clean foam danger cash, with high pressure water washing lane group top, the close plating net is beaten anchor pole then.With the high strength anchor bar of diameter 20 * 2200, accomplish fluently anchor pole by array pitch between 800 * 800 millimeters, anchor pole exposes between the 20-50 millimeter, and every hole is with 2 volume Z2850 type anchoring agent, and mixing time is not less than 25 seconds.
Begin to spray steel fiber concrete after having beaten anchor pole, the concrete ratio is a cement: yellow ground: cobble is 1: 2: 2, and cement is with being not less than No. 425 Portland cements or portland slag cement.Thick molding sand during yellow ground is used, fineness modulus generally should be greater than 2.5, and moisture content is controlled at 5%-7%, and coarse aggregate adopts firm durable cobble or rubble, so particle diameter should not be greatly 5 millimeters.
Steel fibre adopt on splint around a circle not the side of fractureing be certified products, mix in the dried volume that gathers materials 1% ratio of concrete, uniform mixing, spray just is 50-80 millimeter thickness, carries out multiple spray at interval in 10 minutes, is arch concrete body after the shaping.
This structure is applicable to country rock normal condition or broken a little situation, but can come to a halt anchor pole, anchor cable, and side pressure is not very big, though the cracking small gap also not scaling fall quarrel, globality is very good, intensity height, bearing load ability are strong.
Embodiment 2:
On the basis of embodiment 1, in arch concrete body 1, have additional cage of reinforcement.See Fig. 2, Fig. 3 and Fig. 4.Cage of reinforcement 1 comprises hogring muscle 4, connects to form a joint support by longitudinal rib 6 between the adjacent two hogring muscle 4, is connected by dowel 5 between the hogring muscle 4 of an adjacent joint support.
In the construction, after meeting head on to excavate required section, look for clean float stone danger cash (coal cinder), with high pressure water washing tunnel group top, spray 50 millimeters thick one decks with steel fibrous concrete on tunnel group top then, upright again cage of reinforcement, cage of reinforcement adjacent segments lap-joint tightens with U type clamp, each bar splicing place two road clamps, lap length is 400 millimeters.The crosspoint connects with No. 16 bifilar iron wires, tightens with little crowbar, and cage of reinforcement and whole dowel connect the back and just can spray steel fiber concrete again.
Embodiment 3:
During the tunnelling supporting, do not beat anchor pole in the coal seam or in the tomography.
Working programme is, work plane meets head on to look for clean float stone danger bar after coal or rock excavate profile, sprays one deck 50 millimeters thick steel fiber concretes immediately, and the upright cage of reinforcement of linked network is installed connecting reinforcement then, just can pneumatically placed concrete, spraying back 150 millimeters, portion's thickness is 200 millimeters.
Claims (2)
1, colliery underworkings steel bar concrete combined supporting is characterized in that: comprise anchor pole (2), anchor cable (3) and arch concrete body (1); Anchor pole more than 10 is the uniform lateral surface that is being connected arch concrete body of a radial end with anchor cable more than 3, and the other end is positioned at the crag in tunnel.
2, colliery according to claim 1 underworkings steel bar concrete combined supporting, it is characterized in that: be provided with cage of reinforcement in the described arch concrete body, described cage of reinforcement comprises hogring muscle (4), connect to form a joint support by longitudinal rib (6) between the adjacent two hogring muscle (4), connect by dowel (5) between the hogring muscle (4) of an adjacent joint support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620070171 CN2903375Y (en) | 2006-03-13 | 2006-03-13 | Steel reinforced concrete combined support for coalmine tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620070171 CN2903375Y (en) | 2006-03-13 | 2006-03-13 | Steel reinforced concrete combined support for coalmine tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2903375Y true CN2903375Y (en) | 2007-05-23 |
Family
ID=38078784
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620070171 Expired - Fee Related CN2903375Y (en) | 2006-03-13 | 2006-03-13 | Steel reinforced concrete combined support for coalmine tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2903375Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101122235B (en) * | 2007-10-31 | 2010-05-19 | 中国矿业大学 | A Surrounding Rock Method for Controlling the Side Coal Seam Roadway in the Goaf of Fully Mechanized Caving Face |
| CN101967982A (en) * | 2010-08-31 | 2011-02-09 | 中国瑞林工程技术有限公司 | Method for treating tuff roadway bottom heaves |
| CN102182498A (en) * | 2011-03-23 | 2011-09-14 | 彬县水帘洞煤炭有限责任公司 | Comprehensive laneway-supporting method for cracked area in coal mine |
| CN103615273A (en) * | 2013-12-04 | 2014-03-05 | 山东大学 | Square steel confined concrete arch center wall back filling bolting-grouting support system and construction method |
| CN112127912A (en) * | 2020-09-22 | 2020-12-25 | 九州职业技术学院 | Waste coal mine tunnel reinforcing method |
-
2006
- 2006-03-13 CN CN 200620070171 patent/CN2903375Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101122235B (en) * | 2007-10-31 | 2010-05-19 | 中国矿业大学 | A Surrounding Rock Method for Controlling the Side Coal Seam Roadway in the Goaf of Fully Mechanized Caving Face |
| CN101967982A (en) * | 2010-08-31 | 2011-02-09 | 中国瑞林工程技术有限公司 | Method for treating tuff roadway bottom heaves |
| CN101967982B (en) * | 2010-08-31 | 2012-12-19 | 中国瑞林工程技术有限公司 | Method for treating tuff roadway bottom heaves |
| CN102182498A (en) * | 2011-03-23 | 2011-09-14 | 彬县水帘洞煤炭有限责任公司 | Comprehensive laneway-supporting method for cracked area in coal mine |
| CN103615273A (en) * | 2013-12-04 | 2014-03-05 | 山东大学 | Square steel confined concrete arch center wall back filling bolting-grouting support system and construction method |
| CN112127912A (en) * | 2020-09-22 | 2020-12-25 | 九州职业技术学院 | Waste coal mine tunnel reinforcing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070523 Termination date: 20100313 |