LEVEE FAILURE CAUSED BY SEEPAGE AND PREVENTIVE MEASURES

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概要

• 論文の詳細を見る

• There are two classifications of the mechanism of levee failure caused by floods; local seepage failure and progressive failure. The fundamental causes of levee failure produced by piping and erosion were studied and the safety of river levees during floods evaluated in terms of soil mechanics. Elastic-plastic deformation of a levee owing to changes in the water level in a river was calculated by finite element analysis. The extent of the plastic region of levee failure was determined and the relation of displacement to the safety factor for the levee explained. The critical hydraulic gradient and the process of progressive failure were obtained from one- and two-dimensional model experiments for piping and erosion. Problems inherent in and preventive measures against levee failure are discussed. In particular, effects of the Tsukinowa method, the most representative Japanese flood fighting method, were studied experimentally and improvements proposed.

• 日本自然災害学会の論文

著者

• Takeshita Yuji

  Research Associate Department Of Civil Engineering Okayama University

• KOHNO Iichiro

  Department of Civil Engineering, Okayama University

• NlSHIGAKI Makoto

  Department of Civil Engineering, Okayama University

• Kohno Iichiro

  Department Of Civil Engineering Okayama University

• Nlshigaki Makoto

  Department Of Civil Engineering Okayama University

関連論文

• LEVEE FAILURE CAUSED BY SEEPAGE AND PREVENTIVE MEASURES

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