编号：CDUT-2022-23

标题：Catastrophic landslide triggered by persistent rainfall in Sichuan, China: August 21, 2020,Zhonghaicun landslide

入藏号：WOS:000652451500001

中国科学院文献情报中心期刊分区：地学1区/TOP（2021年升级版）

本校作者：易小宇;冯文凯;白慧林;沈贺

来源出版物：LANDSLIDES  卷：18  期：8 页：2907-2921

出版年：2021

第一地址：成都理工大学

关键词：降雨；昔格达组；滑坡特征；演化过程

代表图：

摘要：At approximately 3:50 a.m. (UTC + 8) on August 21, 2020, a massive rainfall-induced landslide occurred in Zhonghaicun, Fuquan town, Hanyuan County, Sichuan Province, China, forming an approximately 40.85 × 104 m3 landslide accumulation, burying eight houses and approximately 100 m of roads, and causing long-term traffic interruptions. The landslide was comprehensively evaluated through field investigation, UAV photography, borehole drilling, and laboratory tests. According to movement and accumulation characteristics, the landslide is divided into the main sliding zones (the source area, impact sliding area, shoveling-accumulation area, and accumulation area) and landslide-affected zones. The deformation and failure of the Zhonghaicun landslide are related to the lithology (existence of a weak interlayer), geomorphology (microrelief changes), and antecedent rainfall. However, the main trigger of the landslide is continuous rainfall, which increases the landslide saturation and pore water pressure and reduces the mechanical strength of the weak layer. The landslide failure mode is complex. The upper slope is affected by rainfall and loses stability first. Under the impact of the sliding mass, sliding of the lower slope is triggered. This study of the Zhonghaicun landslide characterizes the evolution process of a complex rainfall-induced landslide and provides ways to mitigate landslide disasters.

文章链接地址：http://link-springer-com-s.vpn.cdut.edu.cn:8118/article/10.1007/s10346-021-01701-w