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Prediction of Debris Flow Prone Areas and Damage

by Takahisa Mizuyama, Ministry of Construction, Tsukuba City, Japan,
Yoshiharu Ishikawa, Ministry of Construction, Tsukuba City, Japan,



Document Type: Proceeding Paper

Part of: Hydraulics/Hydrology of Arid Lands (H?AL)

Abstract:

It is very important when drawing hazard maps to estimate damage to houses from debris flow of certain fixed quantities. A debris flow disaster, which occurred in Kake Town, Hiroshima Prefecture in July 1988 was studied in a field survey and aerial photograph ciphering to clarify the relation between the fluid force of debris flow and the degree of damage to houses. The distribution of the fluid force was obtained by numerical simulation. The method can be used to estimate the degree of damage to houses in debris flow flood areas more objectively and precisely.

Subject Headings: Fluid flow | Debris | Solids flow | Residential buildings | Numerical models | Fluid-structure interaction | Floods

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