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Shield tunneling machine winter low-temperature starting and tunneling method

A technology of shield machine and low temperature, which is applied in the field of shield tunnel construction, and can solve the problems of frequent dredging of the slurry discharge pipe and easy freezing of the slurry

Pending Publication Date: 2022-05-24
甘井子区精致教育咨询工作室
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When the shield starts at low temperature in winter, the slurry discharge pipe is too long, and the slurry will accumulate at the bend and freeze easily, resulting in frequent dredging of the slurry discharge pipe

Method used

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  • Shield tunneling machine winter low-temperature starting and tunneling method
  • Shield tunneling machine winter low-temperature starting and tunneling method
  • Shield tunneling machine winter low-temperature starting and tunneling method

Examples

Experimental program
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Embodiment Construction

[0020] Conventional shield tunnel 01 top plate and middle plate reserved opening 02 are generally 11m×7m in size, which are used for hoisting shield machine 03 and supporting equipment and later material hoisting.

[0021] The shield well 01 reserves the hole 02 to communicate with the outside world, which greatly reduces the thermal insulation of the shield well 01.

[0022] On both sides of the reserved hole 02 on the top plate of the shield shaft 01, large steel wire ropes 11 are longitudinally arranged as slideways.

[0023] A plurality of pulleys 12 are arranged on the large wire rope 11 .

[0024] The pulley 12 is in a sliding relationship with the large wire rope 11 and can move on the large wire rope 11 .

[0025] Each pulley 12 is connected to the tarpaulin 12 with the function of heat preservation and fire prevention.

[0026] An electric winch 16 is provided at one end of the reserved hole 02 in the longitudinal direction.

[0027] The wire rope 15 goes around th...

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Abstract

The invention provides a shield tunneling machine winter low-temperature launching method aiming at shield debugging and launching stages in a shield well of a subway station, which comprises the technical methods of hoisting hole sealing and heat preservation, pipeline electric heat tracing control heating, synchronous mortar mixing automatic temperature control preheating, totally-closed synchronous mortar station and the like. And the reliability of the shield tunneling machine in winter low-temperature starting and tunneling stages is improved.

Description

technical field [0001] The invention relates to the technical field of shield tunnel construction, in particular to shield initiation, excavation and related auxiliary construction methods under low temperature weather in winter. Background technique [0002] For the construction of tunnel shield method, the low temperature construction of shield in winter is a special seasonal construction, and the construction is difficult. [0003] In the past construction, it often occurred that the synchronous mortar slurry accumulated at the elbow because the synchronous mortar pipeline was too long, and it was easy to freeze. [0004] During the commissioning and start-up stage, the shield machine is in the shield well, and the roof of the shield well is generally reserved with a hoisting hole, so the shield well is more connected with the outside world, the temperature in the shield well in winter is low, and the shield machine is sealed with grease and foam. The failure rate of box...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D11/10E21D11/38
CPCE21D9/0642E21D11/10E21D11/38
Inventor 高墅
Owner 甘井子区精致教育咨询工作室