Development of advanced measurement techniques and numerical analysis for surface failure of slopes during torrential rainfall (guerrilla-like rainfall)

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In this study, more advanced measurement technique for accurate estimation of rainfall profiles and water mass balance in slopes during torrentialrainfall (so-called guerrilla-like rainfall) was developed to investigate the mechanism of rainfall infiltration and rainfall-induced surface failure. The advanced numerical simulation tools were also developed to evaluate the slope stability and simulate the slope failure/collapse processes during torrential rainfall. The newly developed numerical simulation tools were applied to the real surface failure in the slope and their validity was investigated.