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Rock mass tunnel pipe roof structure and construction method thereof

A construction method and technology of tunnel pipes, which are applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems such as insufficient stability of the grouting structure of tunnel pipe sheds, and achieve remarkable results in controlling ground settlement and inhibiting surrounding rock loosening and collapse Effect

Pending Publication Date: 2020-07-31
GUANGXI ROAD & BRIDGE ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: this application provides a rock tunnel pipe shed structure to solve the technical problem that the tunnel pipe shed grouting structure is not stable enough

Method used

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  • Rock mass tunnel pipe roof structure and construction method thereof
  • Rock mass tunnel pipe roof structure and construction method thereof
  • Rock mass tunnel pipe roof structure and construction method thereof

Examples

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Embodiment Construction

[0033] Such as figure 1 As shown, a rock tunnel tube roof structure includes a rock mass 1, a small radial tube 2, a leading small tube 3, and a tube roof tube 4. A tunnel is excavated on the rock mass 1, and the tunnel is provided with arched side walls , The tunnel is supported by a steel arch 5, which includes a supporting arch and a connecting beam. Several supporting arches are arranged side by side in the tunnel front and rear. There are a number of connecting beams between two adjacent supporting arches. The connecting beams on both sides are staggered, and the steel arch frame 5 plays a role of preliminary support to the rock mass 1. A connecting structure is provided between the two ends of the supporting arch and the rock mass 1. The connecting structure includes a positioning ring 81 and a locking conduit 82. The positioning ring 81 is welded to the supporting arch. The locking conduit 82 penetrates the positioning ring 81 and is inserted into the rock mass 1. Inside...

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Abstract

The invention provides a rock mass tunnel pipe roof structure and a construction method thereof. The rock mass tunnel pipe roof structure comprises a rock mass, a plurality of radial small pipes, a plurality of advanced small pipes and a row of pipe roof pipes; a tunnel is excavated in the rock mass and is provided with arch shaped side walls; a steel arch frame is supported in the tunnel; the front end of each of the radial small pipes, the advanced small pipes and the pipe roof pipe is conical; a plurality of grout vent holes are formed in the side wall of each of the radial small pipes, theadvanced small pipes and the pipe roof pipe; the radial small pipes and the advanced small pipes are uniformly distributed on the side walls; the radial small pipes are inserted in the rock mass in the radial direction of the tunnel; the front ends of the advanced small pipes are obliquely inserted in the rock mass; the row of pipe roof pipes is inserted on the side wall at equal intervals; and the front ends of the pipe roof pipes are obliquely inserted in the rock mass, so that the technical problem that the tunnel pipe roof pipe structure is not stable is solved.

Description

Technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a rock tunnel pipe shed structure and a construction method thereof. Background technique [0002] Pipe roof support is mainly used in weak and broken surrounding rock tunnel projects that have strict requirements on surrounding rock deformation and ground subsidence, such as weak, gravel stratum and soft rock, rock piles, and broken zone sections. In tunnel construction, pipe shed pipes are generally arranged circumferentially at a certain interval along part or all of the underground engineering section to form steel pipe shed protection. The pipe shed advance support is for safe excavation under special conditions, providing temporary support methods to enhance the bearing capacity of the ground in advance. [0003] The pipe shed pipes used in the existing pipe shed support structure are all ordinary seamless steel pipes. The seamless steel pipe is inserted into the tunn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/18E21D11/15E21D11/10
CPCE21D11/10E21D11/15E21D11/152E21D11/18
Inventor 杨康钟华刘巍黄庆富吴韩建杨毅孔祥武朱勇锋罗晓东林裕黄伟彬郜玲伏习江张亚飞陈增蔚
Owner GUANGXI ROAD & BRIDGE ENG GRP CO LTD
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