一种不同埋深隧道围岩压力设计值的通用方法
By classifying and simulating the morphological data of the tunnel failure zone, the load of the surrounding rock failure zone is calculated. By adopting the principle of minimum support force, the applicability problem of surrounding rock pressure design for tunnels at different burial depths is solved, and the uniformity and reliability of tunnel surrounding rock pressure design are realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP CO LTD
- Filing Date
- 2023-05-29
- Publication Date
- 2026-07-17
AI Technical Summary
Existing methods for designing tunnel surrounding rock pressure have insufficient applicability under different burial depths. In particular, the formulas for deep-buried tunnels are not applicable to modern tunnel engineering and do not match measured data, resulting in inaccurate design results.
A general method for designing the surrounding rock pressure of tunnels at different burial depths is provided. By acquiring the morphological data of the failure zone during unsupported tunnel excavation, the method classifies the failure zones, simulates the tunnel excavation process, calculates the load in the surrounding rock failure zone, and analyzes the results based on the principle of minimum support force to obtain the design value of the surrounding rock pressure.
It achieves uniformity and accuracy in the design of tunnel surrounding rock pressure under different burial depths, provides a balance between safety and economy, clarifies the evolution law of the surrounding rock failure zone, and improves the reliability of tunnel support design.
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Figure CN116611151B_ABST