地下水・雪氷

[II-54] Study on sand boil due to under seepage flow during a flood

*栗原 克幸¹、福岡 捷二²、田端 幸輔² (1. 中央大学大学院、2. 中央大学研究開発機構)

Keywords:Seepage Flow number SFn, similarity condition, under seepage flow, sand boil, quicksand, Seepage Flow number at the time of the quicksand

In this study, we derive the risk of the sand boil index: SFnqs (Seepage Flow number at the time of the quicksand) by using the general dynamic index governing the seepage flow: SFn (Seepage Flow number) and the condition of quicksand. Furthermore, indicate that whether SFnqs corresponding to the dynamic similarity condition by applying the model experiment of levee and the local levee or not. Finally, examine the relationship between SFnqs and degree of sand boil.