Water-rich soft soil stratum shield arrival steel sleeve auxiliary receiving construction method

A construction method and steel sleeve technology, which is applied in earthwork drilling, wellbore lining, underground chambers, etc., can solve the problems of short longitudinal reinforcement length and high construction risk, so as to improve construction efficiency, reduce risk and stabilize construction environmental effects

Pending Publication Date: 2022-02-11
THE FOURTH CONSTR ENG COMPANY LTD OF CHINA CONSTR SECOND ENG BUREAU +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] For this reason, the present invention provides a construction method for shield tunneling in water-rich soft ground to reach steel sleeves for auxiliary reception, so as to solve the problem of relatively short longitudinal reinforcement length in the prior art, resulting in relatively high construction risks

Method used

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  • Water-rich soft soil stratum shield arrival steel sleeve auxiliary receiving construction method
  • Water-rich soft soil stratum shield arrival steel sleeve auxiliary receiving construction method
  • Water-rich soft soil stratum shield arrival steel sleeve auxiliary receiving construction method

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Embodiment Construction

[0042] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and specific embodiments, but those skilled in the art will understand that the embodiments described below are some of the embodiments of the present invention, rather than all of them. It is only used to illustrate the present invention and should not be construed as limiting the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0043] The embodiment of the present invention provides a construction method for auxiliary reception of shield tunneling in water-rich soft soil stratum reaching steel sleeves, please refer to figure 1 As shown, the construction method includes the following steps:

[0044] S1. Perform foundation reinforcement ...

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Abstract

The invention discloses a water-rich soft soil stratum shield arriving steel sleeve auxiliary receiving construction method. The construction method comprises the following steps that foundation reinforcement treatment is conducted on an interval receiving end; a steel sleeve is mounted; a tunnel portal is chiseled away; the steel sleeve is filled with filler, after the steel sleeve is filled for several days, the shield cutter head penetrates through the reinforcing area to reach the position of a tunnel portal diaphragm wall, and the filler in the steel sleeve needs to reach proper strength; shield tunneling is carried out, and shield tunneling comprises tunneling when a shield cutterhead enters the steel sleeve and tunneling when a shield completely enters the steel sleeve; purposes of reducing construction risks and improving construction efficiency can be achieved.

Description

technical field [0001] The invention belongs to the technical field of shield tunneling, and in particular relates to a construction method for auxiliary receiving of shield tunnels reaching steel sleeves in water-rich soft soil strata. Background technique [0002] With the continuous coverage of urban rail transit and the further development and utilization of underground space, the burial depth of underground tunnels will continue to increase. Shield tunnels will be constructed in confined aquifers, high-permeability sand layers and even harsher geological conditions. The risk of water gushing and sand gushing is relatively high when the shield tunneling machine arrives at the portal and is broken. At the same time, due to the limitation of the surrounding site conditions, there are important roads, pipelines and buildings (structures) near the shield receiving portal, which cannot provide the necessary longitudinal reinforcement length for shield receiving, and the porta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D9/08E21D11/00E21D11/10
CPCE21D9/06E21D9/0607E21D9/08E21D11/003E21D11/10E21D11/107
Inventor 薛志猛丛民龙裴斐李灏
Owner THE FOURTH CONSTR ENG COMPANY LTD OF CHINA CONSTR SECOND ENG BUREAU
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