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Article

Physical Model Study of an Intermittent Rainfall-Induced Gently Dipping Accumulation Landslide

by 1, 1,2 and 2,*
1
Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
2
School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454000, China
*
Author to whom correspondence should be addressed.
Academic Editor: Guido Paliaga
Water 2022, 14(11), 1770; https://doi.org/10.3390/w14111770
Received: 7 April 2022 / Revised: 22 May 2022 / Accepted: 28 May 2022 / Published: 31 May 2022
(This article belongs to the Section Soil and Water)
Many slope failures have been observed in deep-cutting gorges in Southwest China due to rainfall events. This study conducted model-based tests of the failure of a gently dipping accumulation slope caused by intermittent rainfall. The physical model was established by configuring soil samples based on similarity theory and direct shear test data. Intermittent rainfall was simulated by supplying surface runoff and bottom pressure water of the slope. The deformation, earth pressure, and pore pressure were observed during the test using a series of transducers. The results of this research showed that slope failure was first initiated at the toe of the slope. Staged sliding failure then occurred, which spread the unstable zone to the trailing edge of the slope. As infiltration of rainwater continued, the pore pressure increased and the matric suction and effective stress at the bedrock surface decreased, causing failure of the slope. View Full-Text
Keywords: gently dipping accumulation layer slope; intermittent rainfall; physical model; deformation; pore pressure gently dipping accumulation layer slope; intermittent rainfall; physical model; deformation; pore pressure
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MDPI and ACS Style

Zhong, W.; Zhu, Y.; He, N. Physical Model Study of an Intermittent Rainfall-Induced Gently Dipping Accumulation Landslide. Water 2022, 14, 1770. https://doi.org/10.3390/w14111770

AMA Style

Zhong W, Zhu Y, He N. Physical Model Study of an Intermittent Rainfall-Induced Gently Dipping Accumulation Landslide. Water. 2022; 14(11):1770. https://doi.org/10.3390/w14111770

Chicago/Turabian Style

Zhong, Wei, Yuanjia Zhu, and Na He. 2022. "Physical Model Study of an Intermittent Rainfall-Induced Gently Dipping Accumulation Landslide" Water 14, no. 11: 1770. https://doi.org/10.3390/w14111770

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