水电站地下厂房洞室群施工期围岩变形特征与稳定性
发布时间：2018-09-09 18:22
【摘要】：根据施工过程岩层揭露情况,结合围岩变形监测数据,分析围岩变形状况。根据施工期岩层探测结果,建立地下厂房洞室群大型有限元模型,利用变形监测数据,对地下厂房洞室群的围岩力学参数进行反演分析;结合数值仿真结果,分析围岩变形规律。研究结果表明:主厂房第一层开挖穿越Ⅲ_1,Ⅲ_2和Ⅳ类围岩,围岩变形受岩层性质影响较明显,在Ⅳ类围岩穿越的副厂房位置,围岩变形较大;厂横0+153.81断面的变形明显比其他断面的大,在后续开挖过程中应加强对Ⅳ类围岩变形的监控量测。
[Abstract]:According to the exposure of rock strata during construction and the monitoring data of surrounding rock deformation, the deformation status of surrounding rock is analyzed. A large finite element model of underground powerhouse cavern group was established according to the results of rock stratum detection during construction period. The mechanical parameters of surrounding rock of underground powerhouse cavern group were inversely analyzed by using deformation monitoring data, and the numerical simulation results were combined. The deformation law of surrounding rock is analyzed. The results show that the first floor excavation of the main powerhouse passes through the surrounding rock of type 鈪，
本文编号：2233202
[Abstract]:According to the exposure of rock strata during construction and the monitoring data of surrounding rock deformation, the deformation status of surrounding rock is analyzed. A large finite element model of underground powerhouse cavern group was established according to the results of rock stratum detection during construction period. The mechanical parameters of surrounding rock of underground powerhouse cavern group were inversely analyzed by using deformation monitoring data, and the numerical simulation results were combined. The deformation law of surrounding rock is analyzed. The results show that the first floor excavation of the main powerhouse passes through the surrounding rock of type 鈪，
本文编号：2233202
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