Abstract
The conventional tsunami assessment of the active fault beneath the Japan sea in front of the Shimane nuclear power plant and the earthquake feared to happen at the eastern margin of the Japan sea does not expect a huge tsunami as to be assumed on the Pacific sea coast. Hence, the huge tsunami observed at the power plant located near the source of the Tohoku Paciffic sea earthquake tsunami whose run-up height reached TP+15m is regarded as the level 2 tsunami for the Shimane nuclear power plant and planned to construct the tsunami barrier walls to endure the supposed level 2 tsunami.
In this study, the setting of the Level 2 tsunami by using the numerical analysis based on the non-linear shallow water theory and evaluation for the design tsunami wave pressure exerted on the counter measures by using CADMAS-SURF/3D are discussed.
The designed tsunami barrier walls which are suitable to the power plant feasibility and decided from the design tsunami wave pressure distribution based on Tanimoto's formulae and standard earthquake ground motion Ss are also addressed.
