A treatment method for shield shell grouting wrapping of shield machine

Abstract

The invention discloses a treatment method for grouting wrappings of a shield shell of a shield machine, comprising the following steps: 1. Stopping the shield machine; Backfilling of the hole; 4. Marking the DTH drilling position; 5. Breaking of the grouting wrap; 6. Backfilling of the DTH drilling; Repeat steps five to seven; ten, the shield machine resumes tunneling. The present invention confirms the scope of the grouting package on the upper part of the shield shell of the shield machine through geological drilling and coring on the ground, which can effectively reduce the damage to the shield shell of the shield machine and avoid the risk of water gushing and sand gushing. Drilling holes to remove the grouting wraps can effectively save the construction period and construction costs. The ball valve can be used to judge whether the grouting wraps on the upper part of the shield shell have been broken, which can effectively ensure the removal quality of the grouting wraps on the shield shell of the shield machine. The tunneling attitude of the mechanism is controllable.

Description

technical field [0001] The invention belongs to the technical field of tunneling construction of a shield machine, and in particular relates to a treatment method for a grouting wrapping of a shield shell of a shield machine. Background technique [0002] Synchronous grouting in shield tunneling is an essential part of the shield construction process, but during shield construction due to excessive synchronous grouting pressure, excessive grouting volume, and long-term shutdown Superimposed, the synchronous grouting mortar is consolidated on the upper surface of the shield body, and the upper surface of the shield machine is wrapped by mortar, resulting in an uncontrollable tunneling posture of the shield machine, large thrust of the shield machine, uncontrollable ground subsidence, and segments Problems such as damage occur. At present, the existing technology is to excavate the shaft above the ground construction enclosure structure above the shield machine, and carry out ...

AI Technical Summary

Problems solved by technology

[0002] Synchronous grouting in shield tunneling is an essential part of the shield construction process, but during shield construction due to excessive synchronous grouting pressure, excessive grouting volume, and long-term shutdown Superimposed, the synchronous grouting mortar is consolidated on the upper surface of the shield body, and the upper surface of the shield machine is wrapped by mortar, resulting in uncontrollable tunneling posture of the shield machine, large thrust of the shield machine, uncontrollable ground subsidence, and segment Problems such as damage occur. At present, the existing technology is to excavate the shaft above the ground construction enclosure structure above the shield machine, and carry out the shield machine grouting package treatment technology in the shaft. Although the effect is remarkable, it has high requirements for the ground environment and the construction period Long and costly, which is not conducive to shield construction risk, construction period and cost control

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