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Ultra-shallow-buried shed cover underground excavation station construction method

A construction method and shed cover technology, applied in earthwork drilling, shaft lining, tunnel lining, etc., can solve problems such as poor support effect, achieve the effects of reducing the distance of settlement, improving support effect, and improving construction efficiency

Pending Publication Date: 2022-03-15
CHINA RAILWAY TUNNEL GRP ROAD & BRIDGE ENG CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to improve the defect that the support effect is poor when using the traditional pipe curtain method to support the top of the ultra-shallow underground excavated subway station part, this application provides a construction method for ultra-shallow buried canopy excavated stations

Method used

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  • Ultra-shallow-buried shed cover underground excavation station construction method
  • Ultra-shallow-buried shed cover underground excavation station construction method
  • Ultra-shallow-buried shed cover underground excavation station construction method

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Embodiment Construction

[0052] The following is attached Figure 1-8 The application is described in further detail.

[0053] The embodiment of the present application discloses a construction method for an ultra-shallow buried cover excavation station.

[0054] The construction method of ultra-shallow buried cover excavation station includes the following specific construction steps:

[0055] refer to figure 1 , S1. Preliminary measurement preparations are carried out, the depth and position of the pipeline are calculated, the shaft construction is carried out and the transverse passage is dug.

[0056] combine figure 2 , S2. Use the step method to dig out the leading pilot tunnel 1. The length of the steps used is 2-5m. After the top of the leading pilot tunnel 1 is closed to form a raised ring, timely carry out grouting reinforcement, and if necessary, carry out secondary grouting.

[0057] Then adopt the hydrostatic jacking method to insert the supporting steel pipe 41 perpendicular to the ext...

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Abstract

The invention discloses a construction method for an ultra-shallow-buried shed cover underground excavation station, relates to the technical field of subway tunnel excavation, and aims to perform shed cover construction in the ultra-shallow-buried underground excavation construction process of a subway station, improve the supporting effect on an upper soil layer through supporting of a shed cover structure, reduce settlement and improve the construction efficiency. And safe construction of the station is carried out in combination with the layout of the pilot tunnels, so that the safety and the working efficiency of ultra-shallow-buried excavation construction of the subway station are improved.

Description

technical field [0001] The present application relates to the technical field of subway tunnel excavation, in particular to a construction method for excavating a station with an ultra-shallow buried cover. Background technique [0002] Some sections of the subway tunnel are designed under the road. Since there are pipelines, cables and other facilities under the road, it is not easy to excavate directly on the road. It is an ultra-shallow buried project with high safety risks. [0003] However, if the underground excavation method is used directly for construction, it is necessary to pay attention to the position of the pipeline and cables under the road. Due to the large space of the subway tunnel, how to reasonably reinforce it during the excavation process to reduce the hidden danger of landslides is a common problem in the industry. Moreover, in the construction of the subway, the construction risk of the subway station is higher, and 50% of the subway construction sa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D11/00E21D11/10
CPCE21D9/00E21D11/003E21D11/10
Inventor 董立朋杨陕南夏曾银刘志伟赵岗岭夏瑞萌何占江杨钦峰冀翔刘春梅刘亚辉孙亮宋涛李光峰梅华锴库红艳
Owner CHINA RAILWAY TUNNEL GRP ROAD & BRIDGE ENG CO LTD
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