一种盾构隧道洞门注浆封堵装置
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG MINGKANG ENG CONSULTING CO LTD
- Filing Date
- 2025-09-18
- Publication Date
- 2026-07-17
AI Technical Summary
In existing shield tunneling construction, the springs of the check structure are easily blocked by the solidified grout, causing the grouting channel to be blocked or the seal to fail, making it impossible to achieve rapid grouting and sealing and prevent groundwater backflow.
A grouting and sealing device for the portal of a shield tunnel was designed. It adopts a nested structure of a protective seat and a lifting seat. The lifting spring is completely enclosed in the protective seat. Combined with the multi-directional limiting of the limiting rod and the limiting spring, it ensures the smooth lifting and resetting of the sealing seat, forming a double mechanical seal. This prevents grout or solids from entering the spring gap and allows for rapid response to pressure changes.
It achieves rapid channel maintenance during the grouting process and effective sealing after grouting, preventing grout leakage and groundwater backflow, and ensuring the continuity and safety of the grouting effect.
Smart Images
Figure CN224515200U_ABST