CN202417551U - Soft rock roadway supporting structure with sensors and capable of being grouted repeatedly - Google Patents
Soft rock roadway supporting structure with sensors and capable of being grouted repeatedly Download PDFInfo
- Publication number
- CN202417551U CN202417551U CN2011204654800U CN201120465480U CN202417551U CN 202417551 U CN202417551 U CN 202417551U CN 2011204654800 U CN2011204654800 U CN 2011204654800U CN 201120465480 U CN201120465480 U CN 201120465480U CN 202417551 U CN202417551 U CN 202417551U
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- roadway
- supporting
- foundation pit
- sensors
- tunnel
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Abstract
The utility model discloses a soft rock roadway supporting structure with sensors and capable of being grouted repeatedly, which comprises a roadway. A cement spray layer with steel wire ropes serving as ribs is used as a sealing layer arranged on an inner surface in the roadway, grouting anchor rods are embedded and a plurality of sensors are mounted in surrounding rock on the periphery of the roadway, and cement grout with pressure is injected in the surrounding rock on the periphery of the roadway to solidify. A foundation pit is arranged at the footing of the roadway, concrete is sprayed to the foundation pit at the footing to be replaced, a grouting machine is mounted in the foundation pit, the grouting machine is connected to the grouting anchor rod through a pipeline, and grouting is performed to the surrounding rock again when ratio of supporting shift variable of the roadway to roadway space is 3%-5%. The soft rock roadway supporting structure with the sensors and capable of being grouted repeatedly is structurally characterized in that the grouting machine is mounted in the foundation pit at the footing in the roadway and connected to the grouting anchor rods through the pipeline, so that the surrounding rock can be grouted again when the ratio of the supporting shift variable of the roadway to the roadway space is 3%-5%, supporting bodies are reinforced and recombined, a state of fatigue resistance is changed timely, supporting working resistance of the roadway is recovered, and stability of a supporting state of the roadway is kept.
Description
Technical field:
The utility model relates to ground ore deposit technical field, relates in particular to a kind of the have sensor and the soft rock roadway support structure of slip casting repeatedly.
Background technology:
Expansion along with the coal mining scope; Mining depth constantly increases; The mining conditions more and more difficult, the stack pressure that weak rock coal self expands and brings to roadway support under especially big buried depth, complicated structure and the mining induced stress is the difficult problem of puzzlement colliery tunnel support always.Because the difference of the free speed of these pressure, therefore the size and Orientation difference of power be when not waiting, uneven stack pressure makes up.Roadway support can be suffered to destroy repeatedly under the effect of this uneven stack pressure, and conventional support technology is difficult to guarantee the stable of tunnel.Roadway support is unstable, influence the safety in production during the mine construction, also can bring potential safety hazard to later normal use.
Along with the invention and the development of anchor spray technique, mid-term in last century, the U.S., Australia were with the theoretical support system that is the main body with the anchor pole of proposing of hanging beam, compound beam, built-up arch.Big coal countries such as Russia, Poland, Turkey still adopt dissimilar metallic supports to handle the supporting problem in tunnel so far.
At present; Domestic on the basis of drawing foreign technology; To the roadway support under big buried depth, tectonic stress, mining pressure and " weak rocks, coal body " self swelling stress, mainly adopt two kinds of support patterns: a kind of is the composite support of whitewashing technology again behind totally-enclosed canopy of big model U shaped steel and the frame canopy; Another kind is that high strength anchor bar adds anchor cable and adds anchor net spray composite support technology; Also once attempted macroplate and net sticks up support technology.These support technologies one are well to solve the stable problem of present difficult roadway support, the 2nd, and construction is complicated, the roadway support cost is high, repairs just more difficult after roadway support destroys again." weak rocks, coal body " support technology of latest domestic development is the method that adopts bolt grouting; Utilize grouted anchor bar in weak rocks, coal body, to inject the slurries that have pressure; Improve the intensity of coal and rock self; Obtain effect preferably, but, still exist the supporting effect problem of unstable because the slurries pressure that injects in rock, the coal is difficult to lasting stability.Publication number is that CN1963150A, application number are that 200610162650.1 patent application discloses a kind of Weak rock coal supporting technology of superimposed stress of slow release of pressure-stabilizing gluing of tough blinding course; This technology is inserted grouted anchor bar in roadway surrounding rock, the coal body; The cement grout that injection has pressure solidifies, and surface arrangement is the cement spray-up of footpath bone with the wire rope in the tunnel.This method can be to big buried depth, receive the tunnel under tectonic stress, mining induced stress and " weak rocks, coal body " self the swelling stress influence to play support action preferably.
Through analysis and research and extensive work practice; Imagination finishes in working resistance, and in the stage of tired resistance, in good time carries out reinforcement to roadway support; Realize dynamic supporting; Make roadway surrounding rock constantly obtain gluing, its prop self intensity is fully guaranteed, thereby realizes that roadway support remains in the state of working resistance.Unnecessaryly when initial resistance and normal resistance state carry out reinforcement, the roadway support after tired resistance forfeiture destroys then is difficult to reinforcement and recovers, if can take the method for timely reinforcement, can make tunnel soft rock supporting effect steady in a long-term.
Therefore intend on the basis of aforementioned patent applications, do further improvement, make supporting effect more stable in conjunction with timely reinforcement technology.
The utility model content:
The purpose of the utility model just provides a kind of the have sensor and the soft rock roadway support structure of slip casting repeatedly; Solve the expansion of coal mining scope; Mining depth constantly increases; The mining conditions more and more difficult, the stack pressure that weak rock coal self expands and brings to roadway support under especially big buried depth, complicated structure and the mining induced stress is the difficult problem of puzzlement colliery tunnel support always.Because the difference of the free speed of these pressure, therefore the size and Orientation difference of power be when not waiting, uneven stack pressure makes up.Roadway support can be suffered to destroy repeatedly under the effect of this uneven stack pressure, and conventional support technology is difficult to guarantee the stable of tunnel.Roadway support is unstable, influence the safety in production during the mine construction, also can bring the problem of potential safety hazard to later normal use.
The technical scheme that the utility model adopts is:
A kind of have the sensor and a soft rock roadway support structure of slip casting repeatedly; Comprise the tunnel: the tunnel inner surface arranges with the wire rope to be that the cement spray-up of footpath bone is as seal; Insert grouted anchor bar in the country rock of periphery, tunnel; And inject the cement grout curing that has pressure, in the country rock of periphery, tunnel some sensors are installed also; The tunnel footing has foundation pit, and the footing foundation pit is sprayed concrete replaces.
Slurry filling machine is installed in the foundation pit, and slurry filling machine is connected to grouted anchor bar through pipeline.
Move variable and lane space than the time monitoring roadway support, country rock is carried out slip casting once more at 3%-5%.
Compared with prior art, the beneficial effect of the utility model is:
The utility model is employed in the peripheral country rock in tunnel some sensors also is installed, and slurry filling machine is installed in the footing foundation pit in the tunnel, and slurry filling machine is connected to the structure of grouted anchor bar through pipeline; Can move variable and lane space than at 3%-5% the time monitoring roadway support, country rock is carried out slip casting once more, years'experiences shows that this state promptly is that tired resistance is about to forfeiture; It is glued to carry out slip casting once more in this period; To the prop reinforcement, reconfigure prop, in time change its tired resistance state; Recover the roadway support working resistance, keep the stable of roadway support state.
Description of drawings:
Accompanying drawing 1 is the utility model structural representation.
The specific embodiment:
Below in conjunction with accompanying drawing, the utility model is done further explain through embodiment:
A kind of have the sensor and a soft rock roadway support structure of slip casting repeatedly; Comprise tunnel 1: tunnel 1 inner surface arranges with the wire rope to be that the cement spray-up 2 of footpath bone is as seal; Insert grouted anchor bar 3 in the country rock of 1 periphery, tunnel; And inject the cement grout curing that has pressure, in the country rock of 1 periphery, tunnel some sensors 7 are installed also; Tunnel 1 footing has foundation pit 4; And footing foundation pit 4 is sprayed concrete replace, slurry filling machine 5 is installed in the foundation pit, slurry filling machine 5 is connected to grouted anchor bar 3 through pipeline 6; Move variable and lane space than the time monitoring roadway support, country rock is carried out slip casting once more at 3%-5%.
The foregoing description is merely the preferred implementation of the utility model, and in addition, the utility model can also have other implementations.Need to prove that under the prerequisite that does not break away from the utility model design, any conspicuous improvement and modification all should fall within the protection domain of the utility model.
Claims (1)
1. one kind has the sensor and the soft rock roadway support structure of slip casting repeatedly; Comprise the tunnel; It is characterized in that: the tunnel inner surface arranges with the wire rope to be that the cement spray-up of footpath bone is as seal; Insert grouted anchor bar in the country rock of periphery, tunnel, and inject the cement grout curing that has pressure, in the country rock of periphery, tunnel some sensors are installed also; The tunnel footing has foundation pit, and the footing foundation pit is sprayed concrete replaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204654800U CN202417551U (en) | 2011-11-22 | 2011-11-22 | Soft rock roadway supporting structure with sensors and capable of being grouted repeatedly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204654800U CN202417551U (en) | 2011-11-22 | 2011-11-22 | Soft rock roadway supporting structure with sensors and capable of being grouted repeatedly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202417551U true CN202417551U (en) | 2012-09-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204654800U Expired - Lifetime CN202417551U (en) | 2011-11-22 | 2011-11-22 | Soft rock roadway supporting structure with sensors and capable of being grouted repeatedly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202417551U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195442A (en) * | 2013-04-01 | 2013-07-10 | 平顶山天安煤业股份有限公司 | Even-grouting structure of coal mine tunnel and construction technology thereof |
-
2011
- 2011-11-22 CN CN2011204654800U patent/CN202417551U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195442A (en) * | 2013-04-01 | 2013-07-10 | 平顶山天安煤业股份有限公司 | Even-grouting structure of coal mine tunnel and construction technology thereof |
| CN103195442B (en) * | 2013-04-01 | 2016-07-06 | 平顶山天安煤业股份有限公司 | A kind of uniform slip casting structure of coal mine roadway and construction technology thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |