Construction method of water-stop curtain for sub-storey on the ground

A technology of water-stop curtain and construction method, which is applied in basic structure engineering, construction, sheet pile wall and other directions, can solve the problem that the ground water-stop curtain is rarely used, shorten the tunnel construction period, reduce the water conservancy connection, and reduce the project investment. Effect

Active Publication Date: 2011-12-28
SHENZHEN MUNICIPAL DESIGN & RES INST
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Problems solved by technology

At present, ground water-stop curtains are still rarely used in actual tunnel engineering

Method used

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  • Construction method of water-stop curtain for sub-storey on the ground
  • Construction method of water-stop curtain for sub-storey on the ground
  • Construction method of water-stop curtain for sub-storey on the ground

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Embodiment Construction

[0044] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0045] The embodiment of the present invention discloses a method for constructing a water-tight curtain in separate warehouses on the ground, which is used to prevent or delay the infiltration of groundwater into the tunnel body area to be excavated, including the following steps:

[0046] Obtain the groundwater distribution information and stratum structure information in the excavated tunnel body area to be constructed;

[0047] Locating the position of the high-pressure gas pipeline in the excavated tunnel body area to be constructed;

[0048]According to the acquired groundwater distribution information and formation structure information in the excavated tunnel body area to be constructed and the position of the positioned high-pressure gas pipeline, the top...

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Abstract

The invention discloses a construction method of a ground sectional water-stop curtain, which comprises the steps of: obtaining ground water occurrence information and stratum structure information in a trunk region to be constructed and tunneled; positioning a position of a high-pressure fuel pipeline in the trunk region to be constructed and tunneled; carrying out high-pressure jet grouting on a continuous multi-chamber water-stop curtain on the top in the trunk region to be constructed and tunneled, distributing the multi-chamber water-stop curtain at two sides of a tunnel excavation contour line; reinforcing and closing a cross gap region in a space range of the high-pressure jet grouting water-stop curtain and an intermediate-pressure fuel pipeline; and forming a ground sleeve valve grouting vault reinforcing ring above a tunnel to be constructed and tunneled. By adopting the construction method of the ground sectional water-stop curtain in the embodiment of the invention, better conditions are created for the tunneling, the construction progress is accelerated, the construction risk and engineering input are reduced, the ground subsidence is effectively controlled, and the safety of a building close to an underground pipeline is ensured.

Description

technical field [0001] The invention relates to the field of tunnel engineering, in particular to a construction method of a water-stop curtain for sub-silos on the ground. Background technique [0002] At present, in the field of tunnel engineering, ground grouting and water stop technology, as an auxiliary tunnel excavation construction method, have been applied in the design and construction of mountain tunnels in the past. [0003] The grouting reinforcement method mainly adopts the full-scale ground grouting reinforcement. After a large number of engineering examples, there are many problems in this reinforcement method that need to be solved urgently. Distributed in the tunnel body area, although the ground grouting construction will strengthen and improve the ground to a certain extent, it will inevitably disturb the rock and soil within the tunnel body area, and the actual reinforcement effect on site is often far from the design The ideal effect, or even failure, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/18E02D5/46E02D15/04
Inventor 王建新丁华兴李端书王文通刘建国吴永照章新华宋程鹏邓永双徐梁
Owner SHENZHEN MUNICIPAL DESIGN & RES INST
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