A tunnel construction method
By combining vertical freezing pipes and curved freezing pipes, the construction of the connecting passage and the left and right main tunnels was carried out simultaneously, solving the problem of long tunnel construction cycle and improving construction efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHANGJIANG SURVEY PLANNING DESIGN & RES CO LTD
- Filing Date
- 2026-04-09
- Publication Date
- 2026-07-17
AI Technical Summary
In the current tunnel construction, the connecting passage and the left and right main tunnels cannot be constructed simultaneously, resulting in a long overall tunnel construction period.
A freezing scheme combining vertical freezing pipes and curved freezing pipes was adopted to pre-freeze the strata around the connecting passage. The connecting passage area was then frozen using both vertical and curved freezing pipes, ensuring that the freezing construction was separated from the shield tunneling construction of the left and right main tunnels in both time and space.
It significantly shortened the overall construction period of the tunnel section, avoided the delays and safety risks caused by cross-construction, and solved the problem of site occupation for arranging freezing equipment in the tunnel during horizontal freezing construction.
Smart Images
Figure CN122407201A_ABST