Numerical simulation of landsliding and initial surges for soil banks of reservoir under earthquake action

作者：Zhao Lanhao^*; Yang Qingqing; Li Tongchun

来源：Journal of Hydroelectric Engineering, 2011, 30(6): 104-108.

• Dynamic stability analysis
• Earthquake action
• Fluid motions
• Initial surges
• Instability development
• Landsliding
• Level Set
• Level Set method
• N-S equations
• Numerical example
• Reservoir bank
• Reservoir landslide
• Sliding
• Strength reduction method
• Time-dependent

A numerical method for simulation of landsliding and initial surges for soil reservoir banks under earthquake action was developed taking into account the full process of instability development, sliding and initial surge formation. A dynamic stability analysis of soil reservoir landslides was made with a timedependent strength reduction method, and the scope of possible instable region was evaluated using plastic strain distribution. Then the N-S equations and a proper relationship were used to describe the fluid motions of landslides, water and air. A double level-set method was adopted to track the interface of different fluids in the simulation, and coupling of the three fluids in the full process of landsliding and surge formation was simulated. This method was implemented in the frame of a FEM code, and it was verified by a numerical example.

• 出版日期2011
• 单位河海大学