Hydraulic drill follow-up pipe-shed construction method

A construction method and pipe shed technology, applied in earthwork drilling, shaft equipment, wellbore lining, etc., can solve problems such as no construction method, achieve convenient construction, prevent drilling tool deflection, and ensure the construction period

Active Publication Date: 2015-06-24
CHINA RAILWAY NO 2 ENG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Under the condition of protecting national cultural relics, follow up the construction of pipe sheds. At present, there is no construction technology similar to tunnels at home and abroad, and there is no construction method for reference

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0030] The utility model relates to a construction method for a rhinestone-tracking pipe shed. Two guide rails are laid on the work site perpendicular to the tunnel axis at the construction face, for the drilling rig platform to travel and the pipe shed positioning. During construction, the drilling rig platform is used outside the frame. From the tunnel entrance and exit at a certain interval, the mud wall is drilled with water drills to form a mud wall. While drilling, follow the pipe construction at the same time, and finally form advanced pre-support to improve the stiffness and bearing capacity of the stratum, and uniformly distribute the uneven normal distribution of the load. The purpose is to reduce the land subsidence during the subsequent frame excavation and ensure the safety of cultural relic sites.

[0031] Specifically include the following steps:

[0032] 1) Positioning

[0033] 1.1 Construction preparation: temporary construction, personnel, equipment, testin...

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PUM

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Abstract

The invention discloses a hydraulic drill follow-up pipe-shed construction method. Two guide tracks are laid on a work site, which is perpendicular to an axis of a tunnel, on a construction tunnel face, and are used for realizing traveling of a drilling machine platform and positioning of a pipe-shed, during construction, packed hole drilling of a slurry protecting wall is formed by a hydraulic drill from a tunnel access opening at the outer edge of a frame via the drilling machine platform according to certain distances, drilling and follow-up pipe construction are carried out simultaneously, finally, advanced pre-supporting is formed, the purposes of increasing rigidity and bearing ability of a stratum and unevenly and normally distributing uniformly distributed load are achieved, surface subsidence in a follow-up frame digging process is reduced, and safety of civilization sites is ensured. In the method, the quantity of construction operators and the quantity of equipment are reduced, effects are improved, a pipe-shed circulating period is shortened, a construction schedule is ensured, and engineering manufacturing cost is reduced. The method is a brand-new pipe-shed construction method for an extremely shallow-buried and large-section tunnel, not only is convenient in construction when used for soil layers and loose, soft and unstable strata, but also is more favorable for controlling surface subsidence, and is safe and controllable.

Description

technical field [0001] The invention relates to a construction method for water drilling follow-up pipe sheds, which is particularly suitable for undercutting ultra-shallow buried soil and loose, weak and unstable geology and protecting special structures for construction. Background technique [0002] Some highways will pass through areas where national cultural relics are buried, such as the Yushen Expressway will pass through the ruins of the Qin Great Wall. In order to protect national cultural relics, they cannot pass through in the form of cuttings, but tunnels must be used to pass through. [0003] Under the condition of protecting national cultural relics, follow up the construction of pipe sheds. At present, there is no construction technology similar to tunnels at home and abroad, and there is no construction method for reference. Contents of the invention [0004] The technical problem to be solved by the present invention is: in view of the above situation, pro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/10E21D11/10
Inventor 何复生朱家稳李永丰王声扬杨戈杨勇唐开富周忠林王国炜罗飚胡光全陈艳林杨兴林杨全勇张智
Owner CHINA RAILWAY NO 2 ENG GRP CO LTD
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