CN204283211U - Plenty water weak surrounding rock tunnel advanced support pipe canopy pore-forming system smashed to pieces - Google Patents
Plenty water weak surrounding rock tunnel advanced support pipe canopy pore-forming system smashed to pieces Download PDFInfo
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- CN204283211U CN204283211U CN201420730044.5U CN201420730044U CN204283211U CN 204283211 U CN204283211 U CN 204283211U CN 201420730044 U CN201420730044 U CN 201420730044U CN 204283211 U CN204283211 U CN 204283211U
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Abstract
The utility model discloses a kind of plenty water weak surrounding rock tunnel advanced support pipe canopy pore-forming system smashed to pieces, solve the problem that rock crusher, weakness, rich water and Shallow Section tunnel Shed-pipe Advanced Support difficulty of construction are large.Be included in tunneling (2) and be provided with pipe down-the-hole drill (3) and air compressor (4), advance borehole (7) is formed in weak tunnel country rock (1) smashed to pieces, follow-up pipe canopy (6) is provided with in advance borehole (7), the leading portion of follow-up pipe canopy (6) is provided with pipe canopy and advances block (9), be arranged in follow-up pipe canopy (6) with the drilling rod (5) on pipe down-the-hole drill (3), drilling rod leading section is provided with shoe (10), shoe (10) front side end and pipe canopy advance block (9) activity to be abutted against, boring bar head is provided with off-balance bit (8), the tail end of drilling rod is connected on the propeller (11) with pipe down-the-hole drill.The utility model improves Shed-pipe Advanced Support construction quality, shortens the engineering time.
Description
Technical field
The utility model relates to a kind of pore-forming system of tunnel support pipe canopy.
Background technology
At present, in constructing tunnel process, barrel vault advanced support is widely used in country rock weakness, in broken, rich water or Construction of Shallow-Buried Section, before having become tunnel excavation construction, and a very important safety precautions.Conventional Shed-pipe Advanced Support performs and is roughly divided into two processes: one is adopt common down-the-hole drill to carry out advance borehole, and two is utilize rig or excavator rigid top tubulature canopy.Routine utilizes down-the-hole drill to perform in pipe canopy process, after weak broken, rich water during Shallow Section tunnel, boring is easy but pore-forming is difficult, open-hole is before non-mounting pipe canopy, very easily cause collapse hole, directly cause pipe canopy cannot be in place by design objective, and in boring procedure, the empty slag of rock mass of a large amount of slump directly causes down-the-hole drill drilling rod propelling resistance to increase severely, and continues high-strength working and damages greatly down-the-hole drill dynamical system and drilling rod.
Summary of the invention
The utility model provides a kind of plenty water weak surrounding rock tunnel advanced support pipe canopy pore-forming system smashed to pieces, solves rock crusher, weakness, rich water and Shallow Section tunnel Shed-pipe Advanced Support difficulty of construction large, and construction quality difference and cost drop into high technical problem.
The utility model solves above technical problem by following scheme:
A kind of plenty water weak surrounding rock tunnel advanced support pipe canopy pore-forming system smashed to pieces, comprise tunneling, the weak tunnel country rock smashed to pieces of tunneling front of tunnel heading, be provided with pipe down-the-hole drill and air compressor in tunneling, advance borehole is formed in weak tunnel country rock smashed to pieces, follow-up pipe canopy is provided with in advance borehole, the leading portion of follow-up pipe canopy is provided with pipe canopy and advances block, be arranged in follow-up pipe canopy with the drilling rod on pipe down-the-hole drill, drilling rod leading section is provided with shoe, shoe front side end and pipe canopy advance together with block activity abuts against, boring bar head is provided with off-balance bit, the tail end of drilling rod is connected on the propeller with pipe down-the-hole drill, propeller is connected together by high-pressure air hose and air compressor.
Follow-up pipe canopy and drilling rod all can assemble lengthening.
The utility model utilizes the pipe boron steel pipe synchronously followed up with drilling rod, as pushing off the slag casing, creeps into guard aperture and protects drilling rod, significantly reducing the living load of down-the-hole drill, reduces the cost input of drill pipe wear, maintenance.Meanwhile, drilling operating and mounting pipe canopy operation are synchronously carried out, and substantially increase Shed-pipe Advanced Support construction quality, simplified operation, shortened the engineering time, cost drops into greatly less.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of drilling rod 5 leading section of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail:
A kind of plenty water weak surrounding rock tunnel advanced support pipe canopy pore-forming system smashed to pieces, comprise tunneling 2, the weak tunnel country rock 1 smashed to pieces of tunneling 2 front of tunnel heading, be provided with pipe down-the-hole drill 3 and air compressor 4 in tunneling 2, advance borehole 7 is formed in weak tunnel country rock 1 smashed to pieces, follow-up pipe canopy 6 is provided with in advance borehole 7, the leading portion of follow-up pipe canopy 6 is provided with pipe canopy and advances block 9, be arranged in follow-up pipe canopy 6 with the drilling rod 5 on pipe down-the-hole drill 3, drilling rod 5 leading section is provided with shoe 10, shoe 10 front side end and pipe canopy advance together with block 9 activity abuts against, drilling rod 5 head is provided with off-balance bit 8, the tail end of drilling rod 5 is connected on the propeller 11 with pipe down-the-hole drill 3, propeller 11 is connected together by high-pressure air hose and air compressor 4.
Follow-up pipe canopy 6 and drilling rod 3 all can assemble lengthening.Plenty water weak surrounding rock tunnel advanced support pipe canopy pore-forming system smashed to pieces is introduced in tunnel advanced support pipe roof construction by original with pipe down-the-hole drill, to utilize in hole existing air compressor system as power resources, in boring procedure, pipe canopy and drilling rod synchronously advance, and are also in place by pipe canopy while pore-forming.
Claims (2)
1. a plenty water weak surrounding rock tunnel advanced support pipe canopy pore-forming system smashed to pieces, comprise tunneling (2), the weak tunnel country rock (1) smashed to pieces of tunneling (2) front of tunnel heading, it is characterized in that, be provided with pipe down-the-hole drill (3) and air compressor (4) in tunneling (2), advance borehole (7) is formed in weak tunnel country rock (1) smashed to pieces, follow-up pipe canopy (6) is provided with in advance borehole (7), the leading portion of follow-up pipe canopy (6) is provided with pipe canopy and advances block (9), be arranged in follow-up pipe canopy (6) with the drilling rod (5) on pipe down-the-hole drill (3), drilling rod (5) leading section is provided with shoe (10), shoe (10) front side end and pipe canopy advance together with block (9) activity abuts against, drilling rod (5) head is provided with off-balance bit (8), the tail end of drilling rod (5) is connected on the propeller (11) with pipe down-the-hole drill (3), propeller (11) is connected together by high-pressure air hose and air compressor (4).
2. one according to claim 1 plenty water weak surrounding rock tunnel advanced support smashed to pieces pipe canopy pore-forming system, is characterized in that, follow-up pipe canopy (6) and drilling rod (3) all can assemble lengthening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420730044.5U CN204283211U (en) | 2014-11-29 | 2014-11-29 | Plenty water weak surrounding rock tunnel advanced support pipe canopy pore-forming system smashed to pieces |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420730044.5U CN204283211U (en) | 2014-11-29 | 2014-11-29 | Plenty water weak surrounding rock tunnel advanced support pipe canopy pore-forming system smashed to pieces |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204283211U true CN204283211U (en) | 2015-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420730044.5U Active CN204283211U (en) | 2014-11-29 | 2014-11-29 | Plenty water weak surrounding rock tunnel advanced support pipe canopy pore-forming system smashed to pieces |
Country Status (1)
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| CN (1) | CN204283211U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246160A (en) * | 2016-08-09 | 2016-12-21 | 北京矿冶研究总院 | Accurate pipe following drilling control method for composite rock mass |
| CN107013219A (en) * | 2016-01-28 | 2017-08-04 | 中铁隧道勘测设计院有限公司 | Shed-pipe Advanced Support isolates the method for boulder group above a kind of shield tunnel |
| CN110529047A (en) * | 2019-09-11 | 2019-12-03 | 中国水利水电第七工程局有限公司 | A kind of self-advancing type pipe canopy drilling tool excavated for tunnel soft rock |
-
2014
- 2014-11-29 CN CN201420730044.5U patent/CN204283211U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107013219A (en) * | 2016-01-28 | 2017-08-04 | 中铁隧道勘测设计院有限公司 | Shed-pipe Advanced Support isolates the method for boulder group above a kind of shield tunnel |
| CN106246160A (en) * | 2016-08-09 | 2016-12-21 | 北京矿冶研究总院 | Accurate pipe following drilling control method for composite rock mass |
| CN106246160B (en) * | 2016-08-09 | 2019-11-19 | 北京矿冶研究总院 | A kind of accurate pipe-following drilling control method of Composite rockmass |
| CN110529047A (en) * | 2019-09-11 | 2019-12-03 | 中国水利水电第七工程局有限公司 | A kind of self-advancing type pipe canopy drilling tool excavated for tunnel soft rock |
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