FAILURE JUDGMENT OF RESERVOIR BODY BASED ON SEISMIC RESPONSE ANALYSIS AND FLOODED ANALYSIS ACCOMPANYING DESTRUCTION

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  • 地震応答解析に基づくため池堤体の損壊判定と損壊に伴う洪水解析

Abstract

<p>It is difficult to evacuate a reservoir disaster caused by a massive earthquake if the time to failure is short. Reservoirs that are important for disaster prevention is used to be considered priority reinforcement. It is also equally important to utilize disaster prevention information based on 2D numerical analysis, such as hazard maps. In recent years, large-scale numerical simulations is implemented by improvement of computing power. We aim to clarify that the analytical methods for a reservoirs disaster is able to be shown by a large-scale deformation based on finate element method and an incompressible fluid flow program. Using 3D nonlinear seismic response analysis, the damage location and the damage scale were determined. The first obtained results were incorporated into the 3D flood analysis model. The arrival time of the runoff water, height of inundation, hydrodynamic pressure and flow velocity were acquired by flood analysis. It was shown that the wooden house within 100m from the reservoir collapsed in a few minutes. The application method of analysis technology to evaluate disaster risk is obtained by integrating 3D nonlinear seismic response analysis and 3D flood analysis.</p>

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