| 破碎地层交叉隧道开挖稳定性研究与控制 |
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| 引用本文： | 陈淑珍,孙敬涛.破碎地层交叉隧道开挖稳定性研究与控制[J].城市轨道交通研究,2018(3):107-111. |
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| 作者姓名： | 陈淑珍 孙敬涛 |
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| 作者单位： | 重庆工程职业技术学院,402260,重庆 |
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| 摘 要： | 通过建立仿真模型,分析了交叉隧道中间岩柱的稳定性与位移变化规律。结合位移及应力特征,提出了3种中间岩柱的处理方案。通过仿真模型计算,比较了3种方案中隧道静态受力状态下的位移,及施工状态下的围岩位移,选择了锚网喷+U型梁+中间岩柱预应力锚索的中间岩柱处理方案。通过工程实例验证了中间岩柱处理方案的可行性。
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| 关 键 词： | 破碎岩层 斜交隧道 加固措施 数值模拟 broken stratum crossing tunnel reinforcement measure numerical simulation |
Study of the Excavatio n Stability of Crossing Tunnel in Broken Stratum and Control Measures |
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| CHEN Shuzhen,SUN Jingtao.Study of the Excavatio n Stability of Crossing Tunnel in Broken Stratum and Control Measures[J].Urban Mass Transit,2018(3):107-111. |
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| Authors: | CHEN Shuzhen SUN Jingtao |
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| Abstract: | A simulation model is established to analyze the law of stability and displacement of the middle rock column in a crossing tunnel. Combined with the displacement and stress characteristics,3 construction solutions for the middle rock column are proposed. Through simulation calculation,the dis-placement in static stress state of metro tunnel,the displace-ment of surrounding rock in construction state and the solution for the middle rock column in bolting net spray + U beam +prestressed anchorage cable are compared and the last one is selected. The application of this scheme is verified through practical engineering project. |
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