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Avirut CHINKULKIJNIWAT Taworn TIRAMETATIPARAT Chanathip SUPOTAYAN Somjai YUBONCHIT Suksun HORPIBULSUK Rattana SALEE Panich VOOTTIPRUEX 《山地科学学报》2019,(9)
Rainfall induced shallow landslides are known to be extremely dangerous since the sliding mass can propagate quickly and travel far from the source. Although the sliding mechanism in sloping ground is simple to understand, the problem may be complicated by unsaturated transient water flow. The flow behavior of rainwater in unsaturated sloping ground and the consequent factor of safety must be clearly understood to assess slope stability under rainfall conditions. A series of laboratory experiments was conducted to examine the critical hydrological states so that assessment of slope stability under rainfall condition can be performed. Based on the test results, a unique relationship between critical hydrological states, rainfall intensity, and soil properties was formulated. Sequential stability analysis provided insights into the stability of slopes subjected to variations in soil properties, slope angles and rainfall intensities, and the consequent variation in the depth of the failure plane, vital in landslide risk assessment, was determined through this analysis.The variation of rainfall intensity was found to strongly affect the depth of the failure plane in cohesionless sloping ground. Furthermore, the influence of rainfall intensity on the depth of the failure plane may be alleviated by a small magnitude of cohesive strength. The results of this study will reinforce knowledge of landslide behavior and help to improve mitigation measures in susceptible areas. 相似文献
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Salee Rattana Chinkulkijniwat Avirut Yubonchit Somjai Horpibulsuk Suksun Wangfaoklang Chadanit Soisompong Sirirat 《Natural Hazards》2022,113(1):125-141
Natural Hazards - A landslide-triggering rainfall threshold for the southern part of Thailand was introduced. The new threshold explicitly integrates the variables of event rainfall and cumulative... 相似文献
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