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A method for dismantling a single-shield dual-mode TBM in a subsea tunnel

A subsea tunnel and single-shield technology, which is applied in tunnels, earthwork drilling, mining equipment, etc., can solve problems such as the inability to set up receiving shafts and the impossibility of dismantling work, so as to eliminate construction risks, improve construction efficiency, and ensure node The effect of duration

Active Publication Date: 2021-02-26
CHINA RAILWAY NO 2 ENG GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem existing in the prior art that after the TBM equipment excavation completes the subsea tunnel construction task, it stops on the seabed. Due to the influence of the conditions, it is impossible to set up a receiving well on the sea, and the conventional dismantling work cannot be carried out. Therefore, a The above-mentioned deficiencies of the TBM equipment dismantling method in the subsea tunnel provide a method for disassembling the TBM with single shield and dual mode in the subsea tunnel

Method used

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  • A method for dismantling a single-shield dual-mode TBM in a subsea tunnel
  • A method for dismantling a single-shield dual-mode TBM in a subsea tunnel
  • A method for dismantling a single-shield dual-mode TBM in a subsea tunnel

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Embodiment

[0038] Such as Figure 1-11 As shown, a method for dismantling a single-shield dual-mode TBM in a subsea tunnel according to the present invention comprises the following steps:

[0039] A. The last ring of TBM equipment is excavated to 1870mm, and the segments are not assembled. The section steel and the shield tail are welded together to reinforce the last ring segment. At the same time, the back of the shield tail segment is grouted and reinforced to block water coming from behind;

[0040] B. Use the assembly machine to dismantle the propulsion cylinder and hinged cylinder, and at the same time dismantle the walkway plate, continuous belt conveyor and segment transport trolley in the tunnel, and transport them out by electric locomotive;

[0041] C. Install steel brackets on the flatbed car, place the reinforced flatbed car in the supporting trolley to be consigned, use four jacks to lift the four corners of the trolley off the track, and arrange four Root the steel beam...

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Abstract

The invention discloses a method for dismantling a single-shield dual-mode TBM in a subsea tunnel. The parts of the TBM are sequentially removed from the whole TBM and supported by supporting parts. The parts of the TBM removed each time are combined with The corresponding support components are transported to the wellhead by the transport components together and hoisted out. Using this method, the TBM dismantling work in the subsea tunnel can be quickly completed to ensure the node construction period. During the operation, each component of the TBM equipment will be dismantled in sequence according to the construction process, and the horizontal and vertical transportation in the tunnel will be carried out, which can not only reduce costs, eliminate The construction risk is greatly improved, and the construction efficiency is greatly improved, and the dismantling work in the subsea tunnel can be completed safely and efficiently, which provides a construction reference for the later TBM equipment dismantling in the cave. Promoted in internal dismantling.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a method for disassembling a single-shield and dual-mode TBM in a subsea tunnel. Background technique [0002] At present, after the construction of the single-shield dual-mode TBM equipment is completed, the routine dismantling work is that the TBM equipment is excavated from the originating shaft at one end to the receiving shaft at the other end to complete the construction task. The dismantling and hoisting of the machine, the dismantling steps are simple, but the hoisting of the whole machine is risky, and the quality of reinforcement on the ground or the receiving end is high. [0003] After the TBM equipment excavation completes the subsea tunnel construction task, it is shut down on the seabed. Due to the influence of the conditions, it is impossible to set up a receiving shaft on the sea, and the conventional dismantling work cannot be carried out. Therefore, a method ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/087
CPCE21D9/087
Inventor 李小锋陈卓陈强吴志昊何齐海李果
Owner CHINA RAILWAY NO 2 ENG GRP CO LTD
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