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Split type secondary grouting system of shield tunneling machine

A technology of secondary grouting and shield machine, applied in the field of shield machine, can solve the problems of working space affecting manual operation, limited width of equipment bridge walking platform, large volume of cement liquid tank, etc., to achieve high construction efficiency and construction preparation. The effect of short time and large work space

Inactive Publication Date: 2017-05-31
济南中铁重工轨道装备有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during the grouting process, the cement slurry needs to be stirred. Due to the limitation of the mixing device and the amount of cement, the volume of the cement liquid tank is relatively large, and the width of the platform of the equipment bridge is limited. The narrow working space not only affects the manual operation, but also reduces the construction efficiency. , and there are potential safety hazards, causing safety accidents

Method used

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  • Split type secondary grouting system of shield tunneling machine
  • Split type secondary grouting system of shield tunneling machine
  • Split type secondary grouting system of shield tunneling machine

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Embodiment Construction

[0022] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0023] like figure 1 , 2 As shown, a shield machine split secondary grouting system includes a cement liquid tank 3, a water glass liquid tank 7, a double liquid grouting pump 4 and a double liquid mixer 10 for the secondary grouting operation;

[0024] The cement liquid tank 3, the water glass liquid tank 7 and the double liquid grouting pump 4 are all installed on the tail end of the trailer of the shield machine;

[0025] The double-liquid grouting pump 4 is installed in the middle of the cement liquid tank 3 and the water glass liquid tank 7, and the double-liquid grouting pump 4 is connected to the cement liquid tank 3 and the water glass liquid through the grout suction hoses 12 and 13 respectively. tank 7, the double-liquid grouting pump 4 is connected to the double-liquid mixer 10 installed near the grouting hole through the grout disc...

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Abstract

The invention discloses a split type secondary grouting system of a shield tunneling machine. The split type secondary grouting system comprises a cement liquid tank, a sodium silicate liquid tank, a double-liquid grouting pump and a double-liquid mixer which are used for secondary grouting, wherein the cement liquid tank, the sodium silicate liquid tank and the double-liquid grouting pump are mounted at the tail end of the trailer of the shield tunneling machine, and the double-liquid mixer is mounted near a grouting hole; the double-liquid grouting pump is respectively connected with the cement liquid tank and the sodium silicate liquid tank through grout sucking soft tubes, the double-liquid grouting pump is connected into the double-liquid mixer through grout discharge soft tubes corresponding to the grout sucking soft tubes, and the double-liquid mixer is connected into the grouting hole through a grouting soft tube to perform secondary grouting.

Description

technical field [0001] The invention relates to the technical field of shield machines, in particular to a separate secondary grouting system for shield machines. Background technique [0002] After synchronous grouting, segmental lining leakage or surface settlement will be caused due to insufficient uniformity of the local grout or gaps caused by grout solidification and shrinkage; hard to prevent. In these cases, secondary grouting must be added to fill the voids to achieve the purpose of strengthening the tunnel lining and controlling surface settlement. In the shield tunneling industry, the secondary grouting generally adopts the form of double-liquid grouting mixed with cement and water glass. When secondary grouting is required, the double-liquid grouting pump is used to inject the grout into the segment through the hoisting hole on the segment. back to fill the gap. The double-liquid grouting should be carried out in the hoisting hole of the segment within the ran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10
CPCE21D11/105
Inventor 卢庆亮孟晓宁于普涟
Owner 济南中铁重工轨道装备有限公司
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