Influence of changes in extreme daily rainfall distribution on the stability of residual soil slopes

作     者：Thapthai Chaithong 

作者机构：Department of GeographyFaculty of Social SciencesKasetsart UniversityBangkokThailand 

出 版 物：《Big Earth Data》 (地球大数据（英文）)

年 卷 期：2023年第7卷第1期

页      面：101-125页

核心收录：

学科分类：07[理学] 070601[理学-气象学] 0706[理学-大气科学] 

基　　金：This research was supported by the Department of Geography,Faculty of Social Sciences,Kasetsart University This research was supported by the Department of Geography,Faculty of Social Sciences,Kasetsart University 

主　　题：Extreme rainfall generalized extreme value distribution slope stability landslide pore water pressure climate change residual soil 

摘      要：Many landslides triggered by intense rainfall have occurred in moun-tainous areas in Thailand,causing major economic losses and infra-structure *** daily rainfall is a significant trigger for hillslope *** in extreme daily rainfall intensity due to climate change may be one of the key factors responsible for the increased ***,in this context,changes in the intensity of extreme daily rainfall in Chiang Mai Province in North Thailand and their effects on hillslope stability are *** rainfall is modeled using a generalized extreme value distribution and esti-mated for various return periods.A numerical analysis of seepage and an infinite slope stability model are combined to understand the hillslope response under extreme rainfall *** analysis period is divided into two periods of 34 years:1952 to 1985 and 1986 to *** to the analysis results,the distribution of extreme daily rainfall changes in terms of *** average annual daily maximum rainfall increased by approximately 11.13%.The maximum decrease in the safety factor is approximately 4.5%;therefore,these changes in extreme daily rainfall should be consid-ered in future landslide prevention policies.