一种隧道边墙无砂混凝土反包施工方法
By setting pre-defined points and geotextile and waterproof membrane fixing strips inside the tunnel sidewall, the problems of poor drainage and tight adhesion of the waterproof membrane in the construction of sand-free concrete for tunnel sidewalls were solved, achieving efficient drainage and waterproofing effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA RAILWAY NO 2 ENG GROUP CO LTD
- Filing Date
- 2025-10-09
- Publication Date
- 2026-07-17
AI Technical Summary
In the current construction of no-fines concrete sidewalls in tunnels, the longitudinal drainage blind pipes have poor drainage effect, and the waterproofing membrane is difficult to adhere tightly to the precast no-fines concrete blocks, resulting in poor waterproofing performance.
Pre-set points are set at intervals on the inner wall of the initial support, connecting geotextile and waterproof membrane fixing strips, wrapping longitudinal drainage blind pipes and sand-free concrete blocks, collecting and filtering groundwater through geotextile, and forming an overlapping structure of the waterproof membrane pressing down on the top to ensure the continuity of the drainage channel and the sealing of the waterproof membrane.
It improves drainage, ensures a tight fit between the waterproof membrane and the no-fines concrete block, avoids gaps and backflow of water, enhances the sealing and reliability of the longitudinal joints of the waterproof membrane, reduces construction errors, and improves work efficiency.
Smart Images
Figure CN120946368B_ABST