隧道箱涵内狭小空间钻注一体设备及隧底注浆施工方法
By implementing phased grouting construction and equipment optimization, the construction challenges in the confined space of shield tunnel box culverts were solved, achieving uniformity and safety in grouting, and improving construction efficiency, reinforcement effect, adaptability, and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA TIESIJU CIVIL ENGINEERING GROUP CO LTD
- Filing Date
- 2025-08-22
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional drilling and injection construction methods are difficult to carry out structural repair and reinforcement efficiently and safely in the narrow space of shield tunnel box culverts, and existing equipment is not adaptable and efficient enough.
A phased grouting construction method was adopted, and the grouting sequence was planned according to the odd or even number of segment splicing points. Combined with the erection of working platforms, extension of drill rods and equipment cleaning measures, the drilling and grouting processes were divided into zones and dynamically controlled.
The project achieved uniformity and safety of grouting in a confined space, improved construction efficiency, reduced the risk of cross-contamination of grout, ensured the reinforcement effect and construction feasibility of the tunnel bottom, and solved the technical problems of space constraints and reinforcement uniformity.
Smart Images
Figure CN121066622B_ABST