CN202360119U - Soft rock roadway supporting structure with multiple spray layers of seal coats - Google Patents
Soft rock roadway supporting structure with multiple spray layers of seal coats Download PDFInfo
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- CN202360119U CN202360119U CN2011204649111U CN201120464911U CN202360119U CN 202360119 U CN202360119 U CN 202360119U CN 2011204649111 U CN2011204649111 U CN 2011204649111U CN 201120464911 U CN201120464911 U CN 201120464911U CN 202360119 U CN202360119 U CN 202360119U
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Abstract
The utility model discloses a soft rock roadway supporting structure with multiple spray layers of seal coats, which comprises a roadway: the inner surface of the roadway is provided with seal coats, wherein concrete sprayer layers with steel wire as diameter bone serve as the seal coats, grouting anchor rods are arranged in the surrounding rock on the periphery of the roadway, multilevel grouting anchor rods are arranged in the surrounding rock with different depth, mutually connected steel wire ropes are suspended at the outer end of each layer of the grouting anchor rods, concrete is sprayed to form the multiple spray layers of seal coats, and concrete slurry with pressure is injected to solidify; and bottom corners of the roadway are provided with base pits which are sprayed with concrete to conduct replacement. According to the supporting structure, multilevel anchor rods are matched with multiple spray layers of seal coats, each spray lay is combined with respective anchor rod, and multilevel anchor rod structure is formed in the rock mass; the soft rock roadway supporting structure with multiple spray layers of seal coats has the advantages that the combined quantity density of the anchor rods in unit rock mass is increased, the anchor rods are fully cemented after being injected with slurry with pressure for a plurality of times, the anchor rod and the cementing matrix serve as the main body for the novel composite unit, conditions of low pulling resistance and shear resistant intensity of the surrounding rock can be further overcome, original heterogeneous, discontinuous, anisotropic rock groups are turned into homogeneous, similar performance and continuous novel rock mass with high intensity, and the supporting effect is improved.
Description
Technical field:
The utility model relates to ore deposit, ground technical field, relates in particular to a kind of soft rock roadway support structure of many spray-ups seal.
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.
Heavily stressed complex structure district roadway surrounding rock is to compose the rock colony deposit under the natural endowment, have the heterogeneous body stratiform compose deposit, discontinuous body and stressed anisotropy.It is very big to roadway support pressure that these characteristics cause fragmentation, distortion, the rheology of rock mass under complex stress condition; Adopt multilayer bolt grouting seal technology, be built into homogeneous that resistance to compression, tension and shear strength all be able to greatly to promote, the same sex, continuous supporting colony to the country rock body.
Therefore intend on the basis of aforementioned patent applications, do further improvement, make supporting effect more stable in conjunction with many seals technology.
The utility model content:
The purpose of the utility model just provides a kind of soft rock roadway support structure of many spray-ups seal; 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 soft rock roadway support structure of many spray-ups seal; 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; Adopt inserting in the country rock of multi-level grouted anchor bar different depth, every layer of grouted anchor bar outer end hangs the wire rope that links each other and spray concrete forms many spray-ups seal, and injects the cement grout curing that has pressure; The tunnel footing has foundation pit.
Deep-cut footing during the tunnel at excavation, form foundation pit, and the footing foundation pit is sprayed concrete replace.
Compared with prior art, the beneficial effect of the utility model is:
The utility model adopts multi-level anchor pole and many spray-ups seal to be complementary, and each spray-up is combined with anchor pole separately, in rock mass, forms the structure of multi-level anchor pole; Anchor pole combined amount density in the multi-level anchor pole unit of the making rock mass; Make it abundant gluing through repeatedly injecting band mud jacking liquid; New assembly is the main body with anchor pole and cementitious matrix; Can further overcome country rock tension and the low situation of shear strength, be built into homogeneous, the same sex and continuous high-strength novel rock mass to original heterogeneous body, discontinuous, anisotropic rock colony, improve supporting effect.
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 soft rock roadway support structure of many spray-ups seal; 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; Adopt inserting in the country rock of multi-level grouted anchor bar 3 different depths, every layer of grouted anchor bar 3 outer end hang the wire rope that links each other and spray concrete forms many spray-ups seal 4, and injects the cement grout curing that has pressure; Tunnel 1 footing has foundation pit 5, and footing foundation pit 5 is sprayed concrete replaces.
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 (2)
1. the soft rock roadway support structure of spray-up seal more than a kind; Comprise the tunnel; It is characterized in that: the tunnel inner surface arrange with the wire rope be the cement spray-up of footpath bone as seal, insert grouted anchor bar in the peripheral country rock in tunnel, adopt inserting in the country rock of multi-level grouted anchor bar different depth; Every layer of grouted anchor bar outer end hangs the wire rope that links each other and spray concrete forms many spray-ups seal, and injects the cement grout curing that has pressure; The tunnel footing has foundation pit.
2. the soft rock roadway support structure of many spray-ups seal according to claim 1 is characterized in that: deep-cut footing during the tunnel at excavation, form foundation pit, and the footing foundation pit is sprayed concrete replace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204649111U CN202360119U (en) | 2011-11-22 | 2011-11-22 | Soft rock roadway supporting structure with multiple spray layers of seal coats |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204649111U CN202360119U (en) | 2011-11-22 | 2011-11-22 | Soft rock roadway supporting structure with multiple spray layers of seal coats |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202360119U true CN202360119U (en) | 2012-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204649111U Expired - Lifetime CN202360119U (en) | 2011-11-22 | 2011-11-22 | Soft rock roadway supporting structure with multiple spray layers of seal coats |
Country Status (1)
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| CN (1) | CN202360119U (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839981A (en) * | 2012-09-25 | 2012-12-26 | 山东大学 | Backfilling stand shoring system of three-dimensional prestress wire of deep soft rock roadway |
| 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 |
| CN103334779A (en) * | 2013-06-25 | 2013-10-02 | 淮北市平远软岩支护工程技术有限公司 | Method for constructing isotropic surrounding rock soft rock roadway support |
| CN103573280A (en) * | 2013-11-21 | 2014-02-12 | 太原理工大学 | Method for supporting porous ooze invasion compound roof roadway |
| CN104790981A (en) * | 2015-04-03 | 2015-07-22 | 山东大学 | Structure and method for improving connection performance between concrete spray layer and arch frames |
| CN104790972A (en) * | 2015-04-03 | 2015-07-22 | 山东大学 | Construction method and structure for underground construction confined concrete shoring prestressed steel strands |
| CN106089240A (en) * | 2016-06-14 | 2016-11-09 | 重庆工商职业学院 | Support System in Soft Rock Tunnels segments in a circular shape excavation supporting system and method for protecting support thereof |
| CN112832836A (en) * | 2021-03-04 | 2021-05-25 | 淮北市平远软岩支护工程技术有限公司 | Support method and support equipment for problem of ejection of anchor rod and anchor cable cover plate |
| CN112832810A (en) * | 2021-03-04 | 2021-05-25 | 淮北市平远软岩支护工程技术有限公司 | Support method for fractured-interval argillization rheological rock mass and application |
| CN112832834A (en) * | 2021-03-04 | 2021-05-25 | 淮北市平远软岩支护工程技术有限公司 | High-strength and high-toughness support sealing layer technology for preventing rock mass from ejecting and sealing layer equipment |
| CN113107527A (en) * | 2021-04-24 | 2021-07-13 | 淮北市平远软岩支护工程技术有限公司 | Multi-level supporting process and monitoring method for roadway with large rock burst |
| CN113187521A (en) * | 2021-04-07 | 2021-07-30 | 淮北市平远软岩支护工程技术有限公司 | Steel wire rope net hanging method based on yielding technology and auxiliary net hanging equipment |
-
2011
- 2011-11-22 CN CN2011204649111U patent/CN202360119U/en not_active Expired - Lifetime
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102839981B (en) * | 2012-09-25 | 2014-12-10 | 山东大学 | Backfilling stand shoring system of three-dimensional prestress wire of deep soft rock roadway |
| CN102839981A (en) * | 2012-09-25 | 2012-12-26 | 山东大学 | Backfilling stand shoring system of three-dimensional prestress wire of deep soft rock roadway |
| 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 |
| 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 |
| CN103334779A (en) * | 2013-06-25 | 2013-10-02 | 淮北市平远软岩支护工程技术有限公司 | Method for constructing isotropic surrounding rock soft rock roadway support |
| CN103573280A (en) * | 2013-11-21 | 2014-02-12 | 太原理工大学 | Method for supporting porous ooze invasion compound roof roadway |
| CN103573280B (en) * | 2013-11-21 | 2015-05-13 | 太原理工大学 | Method for supporting porous ooze invasion compound roof roadway |
| CN104790981A (en) * | 2015-04-03 | 2015-07-22 | 山东大学 | Structure and method for improving connection performance between concrete spray layer and arch frames |
| CN104790972A (en) * | 2015-04-03 | 2015-07-22 | 山东大学 | Construction method and structure for underground construction confined concrete shoring prestressed steel strands |
| CN106089240A (en) * | 2016-06-14 | 2016-11-09 | 重庆工商职业学院 | Support System in Soft Rock Tunnels segments in a circular shape excavation supporting system and method for protecting support thereof |
| CN106089240B (en) * | 2016-06-14 | 2019-02-22 | 重庆工商职业学院 | Support System in Soft Rock Tunnels segments in a circular shape excavation supporting system and its method for protecting support |
| CN112832836A (en) * | 2021-03-04 | 2021-05-25 | 淮北市平远软岩支护工程技术有限公司 | Support method and support equipment for problem of ejection of anchor rod and anchor cable cover plate |
| CN112832810A (en) * | 2021-03-04 | 2021-05-25 | 淮北市平远软岩支护工程技术有限公司 | Support method for fractured-interval argillization rheological rock mass and application |
| CN112832834A (en) * | 2021-03-04 | 2021-05-25 | 淮北市平远软岩支护工程技术有限公司 | High-strength and high-toughness support sealing layer technology for preventing rock mass from ejecting and sealing layer equipment |
| CN112832834B (en) * | 2021-03-04 | 2022-03-01 | 淮北市平远软岩支护工程技术有限公司 | High-strength and high-toughness support sealing method for preventing rock mass from ejecting |
| CN113187521A (en) * | 2021-04-07 | 2021-07-30 | 淮北市平远软岩支护工程技术有限公司 | Steel wire rope net hanging method based on yielding technology and auxiliary net hanging equipment |
| CN113187521B (en) * | 2021-04-07 | 2023-11-10 | 淮北市平远软岩支护工程技术有限公司 | Steel wire rope net hanging method and auxiliary net hanging equipment based on yielding technology |
| CN113107527A (en) * | 2021-04-24 | 2021-07-13 | 淮北市平远软岩支护工程技术有限公司 | Multi-level supporting process and monitoring method for roadway with large rock burst |
| CN113107527B (en) * | 2021-04-24 | 2021-10-08 | 淮北市平远软岩支护工程技术有限公司 | Multi-level supporting process and monitoring method for roadway with large rock burst |
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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: 20120801 |