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Title:
PROTECTION STRUCTURE FOR PREVENTING GROUND HEAVE CAUSED BY TUNNEL GROUTING REINFORCEMENT AND GROUTING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/248596
Kind Code:
A1
Abstract:
A protection structure for preventing ground heave caused by tunnel grouting reinforcement and a grouting method, relating to the technical field of geotechnical engineering, civil engineering and municipal engineering, and comprising a tunnel body (8) located below a stratum surface (1). A reverse curved arch (5) formed by ground surface grouting is arranged in the stratum directly above the tunnel body (8), and the reverse curved arch (5) is arched downwards; a support structure is arranged on a top slope of the inner contour of the tunnel body (8) and surrounds the top slope of the inner contour of the tunnel body (8); a forward curved arch (11) formed by drilling grouting is arranged on the outer side of the support structure, and the forward curved arch (11) is arched upwards. A stress bearing body is jointly formed by multi-layer multiple grouting and a combination of multiple passive supporting modes, the reverse curved arch (5) and the forward curved arch (11) are formed in sequence, and the stress distribution states of the loose rock stratum, and the sandy soil layer and the like surrounding the tunnel are changed. Therefore, high-pressure grouting can be formed by protection of the reverse curved arch (5) under the condition of being not familiar with the surrounding environment and the rock-soil property.

Inventors:
WANG SHUREN (CN)
ZHANG JIYUN (CN)
LI CHUNLIU (CN)
GONG JIAN (CN)
WANG XINYU (CN)
XU LAIBIN (CN)
Application Number:
PCT/CN2020/070390
Publication Date:
December 17, 2020
Filing Date:
January 06, 2020
Export Citation:
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Assignee:
UNIV HENAN POLYTECHNIC (CN)
International Classes:
E21D11/00; E02D3/12
Foreign References:
CN110118090A2019-08-13
CN210068175U2020-02-14
CN109162722A2019-01-08
CN101824824A2010-09-08
CN109296385A2019-02-01
CN208605184U2019-03-15
CN107044290A2017-08-15
CN109372556A2019-02-22
CN104533434A2015-04-22
KR100760293B12007-09-19
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
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