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| 破碎地层交叉隧道开挖稳定性研究与控制 | |
| 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, 0(3): 107-111. DOI: 10.16037/j.1007-869x.2018.03.027 |
| 作者姓名： | 陈淑珍 孙敬涛 |
| 作者单位： | 重庆工程职业技术学院,402260,重庆 |
| 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。 |
| 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, 0(3): 107-111. DOI: 10.16037/j.1007-869x.2018.03.027 | |
| Authors: | CHEN Shuzhen SUN Jingtao |
| 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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