Simulation of Horizontal Bedrock Ground Motion Parameters in Three Gorges[JP]
Reservoir Area under the Action of Reservoir Induced Earthquake
1 Wuchang Institute of Technology, 110 Baishazhou Road, Wuhan 430065, China
2 First Crust Monitoring and Application Center, CEA, 7 Naihuo Road, Tianjin 300180,China
3 Key Laboratory of Earthquake Geodesy,Institute of Seismology,CEA,40 Hongshance Road,Wuhan 430071,China
4 Wuhan Base of Institute of Crustal Dynamics,40 Hongshance Road,Wuhan 430071,China
Abstract The contact algorithm was applied to construct a 2-dimension FEM simulation model which indudes the active faults.We explore a proper scenario earthquake parameter setting for the NGA model in oder to supply the input time history.We find that the horizontal bedrock ground PGA at the Three Gorges Dam project is about 175 Gal when the M5.5 reservoir induced earthquake occourred on Jiuwanxi fault. A M5.5 earthquake caused by Gaoqiao fault will make the horizontal bedrock ground PGA at the Badong rise to 303 Gal.We also find that the bedrock ground motion PGA on both sides of faults distributes discontinuously. This phenomenon indicates that it is necessary to consider the fault when we calculate the bedrock ground motion parameters.
YOU Shan,MENG Qingxiao,JING Pengxu. Simulation of Horizontal Bedrock Ground Motion Parameters in Three Gorges[JP]
Reservoir Area under the Action of Reservoir Induced Earthquake[J]. jgg, 2015, 35(1): 150-153.
YOU Shan,MENG Qingxiao,JING Pengxu. Simulation of Horizontal Bedrock Ground Motion Parameters in Three Gorges[JP]
Reservoir Area under the Action of Reservoir Induced Earthquake[J]. jgg, 2015, 35(1): 150-153.
