Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Stability Analysis of a Landslide Influenced by Rainfall
This study investigated the Shiliushubao landslide’s rainfall-induced instability. Using the finite element method and limit equilibrium calculations, coupled transient seepage and stability analyses were carried out to evaluate the dynamic stability of the landslide during numerically simulated rainstorms. A sensitivity analysis of the landslide stability when the landslide was affected by rainfall was also conducted. The results showed that short rainfall durations with low rainfall intensities do not significantly affect landslide stability. However, short rainfall durations with high rainfall intensities have considerable effects on the stability of shallow landslides. Slope stability gradually decreases as rainfall durations increase, but the effect of rainfall duration on stability is much greater for the shallow sliding blocks than it is for the main block. For the same increase in rainfall duration, the safety factors for the shallow blocks decrease more than the safety factor for the main block. Minimum safety factors do not occur immediately during a rainfall but develop during the following days. This behavior demonstrates the hysteresis of rainfall-induced landslide instability.
Stability Analysis of a Landslide Influenced by Rainfall
This study investigated the Shiliushubao landslide’s rainfall-induced instability. Using the finite element method and limit equilibrium calculations, coupled transient seepage and stability analyses were carried out to evaluate the dynamic stability of the landslide during numerically simulated rainstorms. A sensitivity analysis of the landslide stability when the landslide was affected by rainfall was also conducted. The results showed that short rainfall durations with low rainfall intensities do not significantly affect landslide stability. However, short rainfall durations with high rainfall intensities have considerable effects on the stability of shallow landslides. Slope stability gradually decreases as rainfall durations increase, but the effect of rainfall duration on stability is much greater for the shallow sliding blocks than it is for the main block. For the same increase in rainfall duration, the safety factors for the shallow blocks decrease more than the safety factor for the main block. Minimum safety factors do not occur immediately during a rainfall but develop during the following days. This behavior demonstrates the hysteresis of rainfall-induced landslide instability.
Stability Analysis of a Landslide Influenced by Rainfall
Soil Mech Found Eng
Ren, Guang Ming (Autor:in) / Xia, Min (Autor:in) / Lv, Song Mei (Autor:in)
Soil Mechanics and Foundation Engineering ; 60 ; 55-62
01.03.2023
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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