Large-Scale Test Model of the Progressive Deformation and Failure of Cracked Soil Slopes

作     者：Zhi Zhou Jiaming Zhang Fulong Ning Yi Luo Lily Chong Kuangbiao Sun Zhi Zhou;Jiaming Zhang;Fulong Ning;Yi Luo;Lily Chong;Kuangbiao Sun

作者机构：School of EngineeringChina University of GeosciencesWuhan 430074China Anhui Transportation Holding Group Co.Ltd.Hefei 230088China 

出 版 物：《Journal of Earth Science》 (地球科学学刊（英文版）)

年 卷 期：2020年第31卷第6期

页      面：1097-1108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：the scope of the project of Anhui Province Transport Technology Progress Plan(Nos.2018030,JKKJ-2020) funded by the Fundamental Research Funds for Central Universities,China University of Geosciences(Wuhan)(Nos.1810491A24,CUG160203) the Opening Fund of the Key Laboratory of Geological Survey and Evaluation of Ministry of Education of China(No.GLAB2019 ZR05) 

主　　题：slope failure geological engineering cracked soil slope large-scale test progressive deformation 

摘      要：A large-scale test bed(LWH=6 m×3 m×2.8 m)instrumented with various sensors is used to examine the effects of rainfall infiltration and evaporation on the deformation and failure of cracked soil slopes,taking the Anhui area along the Yangtze River as a field *** results indicate that(1)during rainfall,the soil around the shallow shrinkage fissures attains transient saturation,and the attendant decrease of matric suction is the primary cause of the shallow slope failure;(2)slope deformation continues during post-rainfall evaporation;(3)if a period of evaporation is followed by heavy rainfall,soil creep is concentrated near the deepest cracks,and two zones of steep gradients in pore pressure form at the crest and toe of the ***,a saturated zone forms near each crack base and gradually enlarges,eventually forming a continuous saturated layer that induces the slope instability or failure.