防潮堤を越流後の津波遡上過程に関する基本特性

  • 白井 秀和
    京都大学大学院工学研究科都市社会工学専攻 日本学術振興会特別研究員DC
  • 細田 尚
    京都大学大学院工学研究科都市社会工学専攻

書誌事項

タイトル別名
  • BASIC CHARACTERISTICS OF TSUNAMI INVASION PROCESSES OVER LAND AFTER OVERTOPPING SEAWALL
  • ボウチョウテイ オ エツリュウ ゴ ノ ツナミ ソジョウ カテイ ニ カンスル キホン トクセイ

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抄録

This paper describes the basic characteristics of tsunami invasion processes over land after overtopping seawall. These processes are divided into two stage. In early stage, flow propagates over land as supercritical flow, soon after overtopping seawall. Inertia-pressure region appears in this stage. The effect of bottom-friction increases with time. As the result, hydraulic jump is established. After that, pressure-friction region appears. In order to discuss both regions, the self-similarity distribution analysis is applied and similarity solutions in both regions are derived. Theoretical findings are verified by comparing the numerical simulation results with experimental result. Especially, the numerical simulation results are in good agreement with the theoretical findings.

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