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Disposal method for long-term shutdown of shield machine in tunnel excavation

A disposal method and technology of shield machine, applied in tunnels, tunnel lining, earthwork drilling and mining, etc., can solve the problem that shield machine is difficult to achieve safe shutdown for a long time, and achieve strict and thoughtful technical measures, scientific technical solutions, and easy implementation. Effect

Active Publication Date: 2022-08-05
CHINA RAILWAY TUNNEL GROUP CO LTD +1
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a treatment method for the long-time shutdown of the shield machine in the excavation tunnel, so as to solve the technical problem that it is difficult to realize the long-term safe shutdown of the shield machine in the excavation tunnel

Method used

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  • Disposal method for long-term shutdown of shield machine in tunnel excavation

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Embodiment

[0045] Example: Long-term shutdown of the shield machine in the interval from Guanshan Avenue Station to the end point for disposal and construction

[0046] 1. Project location and scope

[0047] The second phase of the east section of Wuhan Metro Line 11: the tunnel design line between Guanshan Avenue Station and the end point. After starting from Guanshan Avenue Station, go eastward along the Gaoxin Avenue side, cross the Xiongchu Avenue Elevated and Changhang Blue Crystal International, and pass under Mingyu Road West BRT overpass, go down through the BRT overpass of Optics Valley Avenue, pass through Detao Fashion Hotel on the side, reach the intersection of Optics Valley Avenue and Gaoxin Avenue, then go southeast through Optics Valley Lujingyuan, go down through the high-voltage line tower, and pass through the underground The pipe gallery (under construction) ends at the end point (shaft).

[0048] In the section, two earth pressure balance shield machines are used to...

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Abstract

The invention discloses a method for dealing with the long-term shutdown of a shield machine in a tunnel excavation, aiming at solving the technical problems of over-limit surface settlement, damage to the shield machine and difficulty in re-thrusting the shield machine when the shield machine is shut down for a long time in the excavation tunnel. question. It mainly includes the attitude control of the shield machine, the pressure control of the soil silo, the measures to prevent wrapping, the sealing of the shield tail, the grouting and sealing of the water-stop hoop, and the waterproofing and sand-proofing of the hinged seal. The technical scheme of the present invention is scientific and reasonable, has strong operability, is easy to implement, and has strict and thoughtful technical measures, which can realize the combination of prevention and control, and effectively cope with various complex geological conditions and emergencies; the disposal method of the present invention can ensure long-term The shield machine is safe and controllable during the shutdown process, avoiding the loss caused by the surface settlement exceeding the limit and the damage of the shield machine, and can make the shield machine run at any time to ensure the needs of excavation and assembly.

Description

technical field [0001] The invention relates to the technical field of tunnel shields, in particular to a method for disposing of a long-time shutdown of a shield machine in a tunnel excavation. Background technique [0002] With the rapid development of my country's economy, the number of motor vehicles has increased rapidly, and urban traffic is facing severe congestion problems. It is a feasible way to vigorously develop the public transportation mode mainly based on rail transit. Therefore, subway construction in many cities in my country has now entered a period of rapid development. [0003] However, in the process of shield tunnel construction in subway construction, it is often affected by a variety of complex and variable factors (such as the progress of land acquisition and demolition, the relocation of many types of pipelines, etc.) and some unexpected situations (such as geological changes, etc.) Shield stopped. If the shield machine stops in the tunnel for a l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/06E21D9/08E21D9/093E21D11/38
CPCE21D9/06E21D9/0635E21D9/08E21D9/093E21D11/38
Inventor 王冬冬吕鹏洲石永涛郑清君张松靳纪国马建张峰坤崔高强吴晓赞王立立王云峰米庆飞王登锋林青桥段召艳
Owner CHINA RAILWAY TUNNEL GROUP CO LTD
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