Analysis of Rainfall-Induced Landslide on Unsaturated Soil Slopes

Sustainability

Yongmin Kim¹  Junghwan Kim²  Sangseom Jeong²  Kwangwoo Lee² 

[1] Civil and Environmental engineering, Nanyang Technological University, Singapore 639798, Singapore;Department of Civil and Environmental Engineering, Yonsei University, Seoul 03722, Korea;

关键词: landslide;    unsaturated soil;    matric suction;    rainfall;    Umyeonsan;   

DOI  :  10.3390/su9071280

来源: DOAJ

【 摘 要 】

This paper investigates rainfall-induced landslides on partially saturated soil slopes using the 2011 Umyeonsan landslides at the center of Seoul, Korea. An integrated analysis of rainfall-induced landslide was carried out through laboratory tests, field tests, and numerical analysis. The results of comprehensive investigations in the Umyeonsan region demonstrate that landslide activity is closely related primarily to rainfall and soil properties and slope geometry, and vegetation. Numerical analysis was also performed to confirm the effect of these factors on landslide occurrence. Special attention was given to rainfall penetration analysis to determine the wetting band depth for shallow and deep-seated slope failure in watershed-scale landslide. The simulated results agree closely with the investigation results, which indicates that the applied method is appropriate for use in the simulation of landslides in unsaturated soils.

【 授权许可】

Unknown