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Construction method for tunnel return of matched trolley after low-gravity-center dragging shield

A construction method and post-matching technology, applied in tunnels, earth-moving drilling, mining equipment, etc., can solve the problems of increasing counterweight, shaking and rolling over, and the trolley structure is left and right weighted, so as to improve construction efficiency, safely and quickly return, The effect of convenient construction

Active Publication Date: 2022-02-11
CHINA RAILWAY 12TH BUREAU GRP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this construction method, the overall center of gravity of the shield trolley is on the upper side, and it is necessary to increase the counterweight to solve the problem of the left and right weight of the trolley structure, especially in the curved section, which is prone to shaking and rollover

Method used

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  • Construction method for tunnel return of matched trolley after low-gravity-center dragging shield
  • Construction method for tunnel return of matched trolley after low-gravity-center dragging shield
  • Construction method for tunnel return of matched trolley after low-gravity-center dragging shield

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Embodiment Construction

[0031] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. 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.

[0032] like figure 1 As shown in the figure, a construction method for returning the supporting trolley tunnel after the low-center-of-gravity drag method shield, including the following steps:

[0033] S1. Half-cover excavation at the construction site of the subway station to form a shield receiving well and a receiving well floor of a predetermined length, close the wellhead on one side of the left or right line of the shield receiving well, and use the wellhead on the other side as the opening for dismantling and hoisting of the...

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Abstract

The invention relates to the technical field of shield construction, in particular to a construction method for tunnel return of a matched trolley after low-gravity-center dragging shield. The construction method comprises: S1, a receiving well and a receiving well bottom plate are formed; S2, tunneling to a receiving well bottom plate is performed; S3, trolleys are disconnected, and an equipment bridge and the first trolley are not disconnected; S4, a trolley stand column buttress is arranged at the position of a trolley stand column; S5, a segment flat car is arranged at the bottom of the equipment bridge, and a slag car is arranged at the supporting position of the sixth trolley; S6, a profile steel tool stretches across the position between a buttress and a muck box; S7, a jack is loosened, the sixth trolley is pulled out of a tunnel to be hoisted, and the second to fifth trolleys are sequentially pulled out and hoisted; and S8, the first trolley and the equipment bridge are pulled out of the tunnel wellhead to be disassembled and hoisted. The method is low in gravity center and good in transportation safety, the profile steel tool cross beam can be repeatedly used, construction is convenient, the trolley balance weight problem does not need to be considered, and the construction efficiency is improved. The method is mainly applied to tunnel return construction of the matched trolley after low-gravity-center dragging shield.

Description

technical field [0001] The invention relates to the technical field of shield tunneling, and more specifically, relates to a construction method for returning a supporting trolley tunnel after a low-gravity dragging shield tunnel. Background technique [0002] At present, more and more tunnel constructions in my country's subway intervals use the shield tunneling method. The shield tunnels are excavated at the originating shaft, hoisted, lowered, assembled and debugged, and then excavated to the receiving shaft for disassembly and hoisting. The road occupation construction of the station will make the main road of the city more congested. Therefore, more and more subway station reception shafts in the city center are constructed with half-cover excavation or full-cover excavation to relieve the traffic pressure on the main road. Since the wellhead of the shield receiving well under the cover plate is closed, after receiving the shield machine, the shield machine can only be m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21F13/00E21F17/00
CPCE21D9/0621E21D9/06E21F13/006E21F17/00Y02E10/20
Inventor 王俊杰刘飞胡素娥
Owner CHINA RAILWAY 12TH BUREAU GRP
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