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Small wellhead and large split shield launching method

A technology of split origin and shield

Pending Publication Date: 2022-06-03
CR10BG NO 3 CONSTR +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the defect in the prior art that the shield machine cannot complete the starting operation as a whole, the present invention provides a small wellhead and large split shield starting method

Method used

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  • Small wellhead and large split shield launching method
  • Small wellhead and large split shield launching method
  • Small wellhead and large split shield launching method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] like Figure 1-3 As shown, the present embodiment provides a small wellhead and a large split shield initiation method, which includes the following steps:

[0051] Step S1, separate departure preparation

[0052] Specifically include the following steps:

[0053] Step S11, the equipment is hoisted down the well

[0054] In this step, the excavation equipment and the front trolley that are suitable for the size of the shield wellhead are hoisted down the well by a 45T gantry crane, the backstage trucks are placed outside the shield wellhead in turn, and the excavation equipment, the front truck and the backstage truck are connected in sequence;

[0055] Step S12, muck transportation

[0056] In this step, the excavation equipment is pushed forward to build a shield tunnel, and the generated muck is transported to the rear of the front truck while advancing, and the muck is poured into the muck pool by a 45T gantry crane;

[0057] Step S13, segment transportation

...

Embodiment 2

[0085] like Figure 4-6 As shown, this embodiment provides a wheel for the battery car in Embodiment 1, including a wheel body 110 in the shape of an annular ring; the outer side wall of the wheel body 110 is recessed inwards along the circumferential direction and formed for the rail to extend. There is an annular track groove 111; the two side walls of the track groove 111 along the axial direction of the wheel body 110 are provided with anti-slip mechanisms. Each side wall is provided with installation grooves 210 , and a plurality of installation grooves 210 are evenly arranged along the circumferential direction of the wheel body 110 ; a compression plate 120 is rotatably provided in the installation groove 210 by a torsion spring, and the compression plate 120 faces the wheel body 110 . One end of the outer side wall along the circumferential direction extends into the track groove 111 , and the torsion spring is used to maintain the tendency of one end of the pressing p...

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Abstract

The invention relates to the technical field of shield launching, in particular to a small-wellhead and large-split shield launching method which comprises the following steps: S1, split launching preparation; step S2, tunneling; step S3, ending the starting of the split body; s4, overall launching is carried out; wherein the step S1 specifically comprises the following steps: step S11, hoisting equipment into a well; step S12, transporting the muck; step S13, transporting the duct pieces; when the length of a shield wellhead in a shield launching construction site is insufficient, a shield body of a shield tunneling machine and a part of main front trolley are hoisted into a launching end, the other part of rear trolley is mounted on the ground, and secondary launching is performed according to an integral launching mode after a shield tunnel reaches the length enough to enable all the rear trolleys to be put in; the heavy difficulty of narrow launching space is overcome, and launching is carried out in a small wellhead range of the shield tunneling machine; the construction efficiency of shield launching is improved, the cost is saved, and the construction safety is high.

Description

technical field [0001] The invention relates to the technical field of shield tunnel initiation, in particular to a method for initiation of shield tunnels with small wellheads and large splits. Background technique [0002] With the development of economy, shield construction has been used more and more in urban construction. The initial excavation of shield tunnel is the first step of shield tunnel construction. How to ensure that the shield machine can start the shield safely, smoothly and accurately It is very important for the excavation construction of the shield section. [0003] In general, the shield machine adopts the overall starting plan, including three major steps of hoisting the shield machine down the well, assembling, debugging the shield machine, and starting the shield machine, which can not only save manpower, material resources, and financial resources, but also save the construction period. However, in the urban environment, the originating site is oft...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D9/12E21D11/40
CPCE21D9/06E21D9/12E21D9/124E21D11/40
Inventor 张健李强陈永进杨帆高虎
Owner CR10BG NO 3 CONSTR