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A construction method for the second initial start of the overall pass of the sliding steel sleeve shield machine

A construction method and steel sleeve technology, which is applied in shaft lining, earthwork drilling, shaft equipment, etc., can solve the problems of large construction volume, large impact on tunnel structure, and long time consumption, so as to save construction period, construction safety, and reduce cost effect

Active Publication Date: 2020-07-28
POWERCHINA RAILWAY CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main purpose of this invention is to complete the second start by reassembling the shield machine of the underground excavation tunnel. The overall construction volume is relatively large, which has a great impact on the tunnel structure and takes a long time.

Method used

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  • A construction method for the second initial start of the overall pass of the sliding steel sleeve shield machine
  • A construction method for the second initial start of the overall pass of the sliding steel sleeve shield machine
  • A construction method for the second initial start of the overall pass of the sliding steel sleeve shield machine

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Embodiment Construction

[0051] The present invention will be further described below in conjunction with the accompanying drawings of the description.

[0052] The construction method for the second initiation of the overall passing of the sliding steel sleeve shield machine 3 includes the following steps:

[0053] Step 1, construction preparation operation:

[0054] Step 1.1, review and measure the headroom size of station 1, and require the headroom size of station 1 to be larger than the size of the steel sleeve and reserve the required working space;

[0055] Step 1.2, use a level measuring instrument to level the well at the receiving end of the shield tunneling machine, install the steel sleeve, tunnel the shield machine 3 into the steel sleeve, assemble the last segment and perform grouting to complete the receiving of the shield tunnel;

[0056] Identify the cables and pipelines on the shield machine 3, disconnect the cables and pipelines between the shield machine 3 and the supporting troll...

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Abstract

The invention relates to the technical field of urban rail transit and shield tunnel engineering, in particular to a secondary launching construction method for overall station-crossing of a sliding steel sleeve and a shield tunneling machine. The secondary launching construction method comprises the following steps of construction preparation operation, station-crossing of the sliding steel sleeve and the shield tunneling machine, moving of a rear matching trolley, connecting and adjusting of shield tunneling machine pipelines, mounting of water-stopping benchmark ring and a counter-force frame and mounting of negative ring segments. According to the secondary launching construction method for overall station-crossing of the sliding steel sleeve and the shield tunneling machine, re-hoisting is not needed, the shield tunneling machine does not need to be disassembled, thus the construction period is saved, and the cost is reduced; and hydraulic jacks and rails are matched, so that a steel sleeve base and the shield tunneling machine only need to be lifted by 160 mm in the whole transferring process, secondary launching is conducted in the steel sleeve, and construction is safe.

Description

technical field [0001] The invention relates to the technical field of urban rail transit and shield tunnel engineering, and in particular relates to a construction method for the overall station-passing secondary initiation of a sliding steel sleeve shield machine. Background technique [0002] In the continuous excavation construction of multiple shield sections, if the shield machine adopts the transition method, it usually requires a large crane to disassemble, lift out and reassemble before starting the second time. If the construction of the station has been closed and there are no hoisting conditions reserved, or the construction site conditions of the intermediate station are relatively complicated, and it is difficult for large-scale hoisting and transportation equipment to enter and leave the site, it will take a long time, high cost, high risk and economical to use this method Therefore, in this case, the shield machine is used to save the construction period and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/06E21D9/08E21D11/10E21D11/38
Inventor 毛宇飞
Owner POWERCHINA RAILWAY CONSTR
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