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A shield synchronous grouting and secondary grouting process

A technology of simultaneous grouting and secondary grouting, applied in vertical shaft equipment, shaft lining, mining equipment, etc., can solve the problems of large ground deformation segment offset, poor grouting quality stability, and low early strength, etc. Achieve the effect of small ground deformation and segment offset, good grouting quality and high safety

Active Publication Date: 2020-11-03
HONGRUN CONSTRUCTION GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are some shortcomings in the construction of synchronous grouting: low early strength, easy segregation, large ground deformation and segment offset, poor stability of grouting quality, etc.

Method used

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  • A shield synchronous grouting and secondary grouting process
  • A shield synchronous grouting and secondary grouting process

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Embodiment Construction

[0013] Referring to the accompanying drawings, by describing the embodiments, the specific implementation of the present invention, such as the shape and structure of each component involved, the mutual position and connection relationship between each part, the role and working principle of each part, etc. Further details.

[0014] see figure 1 , the present invention provides a shield synchronous grouting and secondary grouting process, which includes the following steps: (1) configure the slurry according to the formation monitoring data automatic stirring system, (2) transport the configured slurry to the shield machine The grout storage tank, (3) transport the grout in the grout storage tank to the shield tail grouting pipe, (4) perform synchronous grouting in the shield tail building gap according to the dynamic stratum monitoring data, (5) carry out secondary grouting according to the dynamic stratum monitoring data Grouting.

[0015] Preferably, in step (1), accordin...

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Abstract

The invention provides a shield synchronization slip-casting and secondary slip-casting technology comprising the following steps: 1, using an automatic stirring system to configure a slurry accordingto stratum monitoring data; 2, transferring the configured slurry to a slurry storage tank of a shield tunneling machine; 3, conveying the slurry from the slurry storage tank to a shield tail grouting pipe; 4, carrying out shield tail structure void synchronization slip-casting according to the dynamic stratum monitoring data; 5, carrying out secondary slip-casting according to the dynamic stratum monitoring data, using ground slip-casting measures if necessary, properly reinforcing shield segment reinforcement bars, adding reserved slip-casting holes, and supplementing slip-casting accordingto dynamic stratum monitoring conditions in the construction process. The advantages are that section the tunnel soil employs tracking two-liquid grouting reinforcement in the whole course; the method combines the synchronization slip-casting with the secondary slip-casting according to the dynamic stratum monitoring data, thus satisfying demands of different stratum conditions; the ground deformation and segment offset are small, thus improving construction safety.

Description

technical field [0001] The invention relates to a shield synchronous grouting and secondary grouting process, which belongs to the field of tunnel construction. Background technique [0002] The types of shield tail grouting are divided into subsequent grouting, synchronous grouting, timely grouting and secondary grouting. Among them, synchronous grouting is during the shield tunneling construction. When the shield is advanced and the tail of the shield is separated from the segment, an over-excavated gap will appear on the back of the segment. In order to avoid deformation of the ground and cause destructive effects on adjacent structures, After the tail of the shield is detached, it is a construction method of filling the back of the segment with consolidating grout. When the control of ground subsidence and the requirements for tunnel buoyancy are relatively strict, synchronous grouting is generally adopted, and secondary grouting is used as a supplementary measure. [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/10E21D9/06
CPCE21D9/0607E21D11/105
Inventor 赵余夫翁厚洋傅珺许文明沈杰翟羽佳
Owner HONGRUN CONSTRUCTION GROUP CO LTD
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