NUMERICAL SIMULATION OF IN-SITU STRESS FIELD IN THE AREA OF DEEP-BURIED AND LONGER TUNNEL IN NORTH TANSHAN, XINJIANG
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摘要:
采用隧道工程区应力实测数据、北天山地区现代震源机制解、区域地质构造资料以及岩体物理力学参数作为物理模型边界条件和载荷，对北天山隧道工程区进行三维应力场数值模拟，获得了整个工程区特别是隧道工程重要部位岩体应力分布规律，并依据隧道区应力场模拟结果，结合地质资料进行了隧道工程稳定性分析。
Abstract:In this paper, the measured in-situ stress data of the tunnel area, modern focal mechanism solutions of the North Tianshan region, regional geological structural data, as well as physical and mechanical parameters of rock mass were used as boundary and load conditions of the geological model. The three-dimensional numerical simulation was completed on stress field of the north Tianshan tunnel project area. And the rock mass stress distribution law in the whole project area, particular some important parts, was obtained. Stress data was provided for the tunnel project design. Based on the simulation results of the tunnel area stress field, the tunnel stability is analyzed.
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Key words:
- North Tianshan Tunnel /
- stress field /
- finite element method /
- numerical simulation /
- tunnel stability
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表 1 JYZ-2#、JYZ-7#、JYZ-8#钻孔内隧道穿过部位原地应力测量结果
Table 1. In-situ stress in the tunnel parts of JYZ-2#、JYZ-7# and JYZ-8# drill holes
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表 3 最大与最小主应力模拟值与实测值对比
Table 3. Comparison of simulated and measured values of maximum and minimum principal stresses
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