Development characteristics and failure modes of reactivated ancient landslides in the Sichuan–Tibet transportation corridor,China
作者机构：Institute of GeomechanicsChinese Academy of Geological SciencesBeijing 100081China Key Laboratory of Active Tectonics and Geological SafetyMinistry of Natural ResourcesBeijing 100081China China University of GeosciencesBeijing 100083China China Aero Geophysical Survey and Remote Sensing Center for Natural ResourcesBeijing 100083China School of Urban Geology and EngineeringHebei GEO UniversityShijiazhuang 050031China
出 版 物：《Journal of Mountain Science》 (山地科学学报（英文）)
年 卷 期：2023年第20卷第12期
页 面：3596-3613页
核心收录：
学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程]
基 金：supported by the National Natural Science Foundation of China(No.42207233,41731287) the National Key Research and Development Program of China(No.2021YFC3000505) the China Geological Survey projects(No.DD20221816)
主 题：Ancient landslide Reactivation characteristic Triggering factor Failure mode Sichuan-Tibet transportation corridor Eastern Tibetan Plateau
摘 要：The risk of reactivated ancient landslides in the Sichuan–Tibet transportation corridor in China is significantly increasing,primarily driven by the intensification of engineering activities and the increased frequency of extreme weather *** escalation has resulted in a considerable number of fatalities and extensive damage to critical engineering ***,the factors contributing to the reactivation and modes of destruction of ancient landslides remain ***,it is imperative to systematically analyze the developmental characteristics and failure modes of reactivated ancient landslides to effectively mitigate disaster *** on a combination of data collection,remote sensing interpretation,and field investigations,we delineated the developmental attributes of typical ancient landslides within the study *** attributes encompass morphological and topographic aspects,material composition,and spatial structure of ancient ***,we identified the key triggers for the reactivation of ancient landslides,including water infiltration,reservoir hydrodynamics,slope erosion,and excavation,by analyzing representative cases in the study *** of ancient landslides is sometimes the result of the cumulative effects of multiple predisposing ***,our investigations revealed that the reactivation of these ancient landslides primarily led to local ***,over extended periods of dynamic action,the entire zone may experience gradual *** categorized the reactivation modes of ancient landslides into three distinct types based on the reactivation sequences:progressive retreat,backward thrusting,and forward pulling–backward *** study is of great significance for us to identify ancient landslides,deepen our understanding of the failure modes and risks of reactivated ancient landslides on the eastern margin of the Tibetan Plateau,and formulate effective disaster prevention and m
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