一种盾构机弃壳拆机施工方法
By reducing the proportion of mud in the pressure chamber and replacing it with mortar during the dismantling and excavation of the shield tunnel, combined with anti-regression devices and sealing walls, the problems of high tunnel leakage and collapse risks were solved, and construction safety was improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA RAILWAY NO 2 ENG GROUP CO LTD
- Filing Date
- 2025-12-22
- Publication Date
- 2026-07-17
AI Technical Summary
The existing shield tunneling and dismantling operations have insufficient safety, with a high risk of tunnel leakage and collapse, especially in soft geological conditions where they are difficult to implement safely.
By reducing the specific gravity of the mud in the pressure chamber and replacing it with mortar, the mortar is filled from the bottom of the shield shell upwards. An anti-backflow device is connected between the shield shell and the segments, and combined with the sealing wall and plain concrete sealing, the stability of the shield shell and the surrounding soil is ensured.
It effectively reduces the risk of deformation and displacement of the shield shell under earth pressure and water pressure, reduces the risk of tunnel leakage and collapse, and improves the safety of shell disposal and dismantling operations.
Smart Images
Figure CN121363433B_ABST