Stability analysis of loose accumulation slopes under rainfall:case study of a high‑speed railway in Southwest China

作     者：Xin Wang Qian Su Zongyu Zhang Feihu Huang Chenfang He Xin Wang;Qian Su;Zongyu Zhang;Feihu Huang;Chenfang He

作者机构：School of Civil EngineeringSouthwest Jiaotong UniversityChengdu 610031China Key Laboratory of High‑Speed Railway Engineering Ministry of EducationSchool of Civil EngineeringSouthwest Jiaotong UniversityChengdu 610031China CCCC Second Highway Consultants Co.Ltd.Wuhan 430056China 

出 版 物：《Railway Engineering Science》 (铁道工程科学（英文版）)

年 卷 期：2024年第32卷第1期

页      面：95-106页

核心收录：

学科分类：081401[工学-岩土工程] 08[工学] 0814[工学-土木工程] 

基　　金：supported by the National Natural Science Foundation of China (No.51978588) 

主　　题：High-speed railway Loose accumulation slope Slope stability analysis Rainfall effect Strength reduction 

摘      要：The high and steep slopes along a high-speed railway in the mountainous area of Southwest China are mostly composed of loose accumulations of debris with large internal pores and poor stability,which can easily induce adverse geological disasters under rainfall *** ensure the smooth construction of the high-speed railway and the subsequent safe operation,it is necessary to master the stability evolution process of the loose accumulation slope under *** article simulates rainfall using the finite element analysis software’s hydromechanical coupling *** slope stability under various rainfall situations is calculated and analysed based on the strength reduction *** validate the simulation results,a field monitoring system is established to study the deformation characteristics of the slope under *** results show that rainfall duration is the key factor affecting slope *** a constant amount of rainfall,the stability of the slope decreases with increasing duration of ***,when the amount and duration of rainfall are constant,continuous rainfall has a greater impact on slope stability than intermittent *** setting of the field retaining structures has a significant role in improving slope *** field monitoring data show that the slope is in the initial deformation stage and has good stability,which verifies the rationality of the numerical simulation *** research results can provide some references for understanding the influence of rainfall on the stability of loose accumulation slopes along high-speed railways and establishing a monitoring system.