Insights into Reservoir-Triggered Landslides Development and Its Influence Factors in the Three Gorges Reservoir Area,China  

作　　者：Shilin Luo Da Huang Jianbing Peng Zhouzhou Xie Zhiyu Yang Roberto Tomás 

机构地区：[1]Hunan Provincial Key Laboratory for Big Data Smart Application of Natural Disaster Risks Survey of Highway Engineering,Changsha University,Changsha,410022,China [2]College of Civil Engineering and Geomatics,Chang’an University,Xi’an,710064,China [3]Hunan Provincial Key Laboratory for Big Data Smart Application of Natural Disaster Risks Survey of Highway Engineering,Changsha,410022,China [4]School of Civil Engineering,Central South University,Changsha,410075,China [5]Dpto.de Ingenieria Civil.Escuela Politécnica Superior de Alicante,Universidad de Alicante,Alicante,E-03080,Spain

出　　处：《Journal of Earth Science》2024年第6期1979-1997,共19页地球科学学刊（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.42277187,42407279);the United Key Program of the National Natural Sciences Foundation of China(No.U23A202579);Hebei Provincial Natural Science Foundation(No.D2021202002);Hunan Provincial Natural Science Foundation(No.2022JJ40521);Changsha Municipal Natural Science Foundation(No.kq2202065);the Open Research Fund Program of Hunan Provincial Key Laboratory for Big Data Smart Application of Natural Disaster Risks Survey of Highway Engineering(No.BNH2024KFB04);the Conselleria de Innovación,Universidades,Ciencia y Sociedad Digital(No.CIAICO/2021/335)to Roberto Tomás。

摘　　要：More than 5000 landslides or potential landslides have been triggered in the Three Gorges Reservoir(TGR)area since the impoundment in 2003.This study aims at investigating the reservoirinduced landslides spatiotemporal and size distribution and its influence factors in the TGR by taking 790 landslides as statistical samples.The landslides exhibit significant regional and sub-regional spatial differences,and numerous landslides occurred at the initial three impoundment stages and the corresponding 2-3 cycles of reservoir operations followed,but the landslide frequency decreased dramatically after 2010 from temporal perspective.The relationship between landslide development and topographical,geological as well as hydrological factors were analyzed qualitatively.The reservoir-induced landslides in TGR area exhibit self-organized criticality and the rollover is nearly 2.5×10^(4) m^(2),which could not be attributed to the missing data but the coupled influences imposed by affecting factors.Both the double Pareto and inverse gamma functions are more suitable than the power-law function to present the landslide size characteristics.In term of the fitting precious,the adaptability of the inverse gamma function is better if the landslide inventories are limited.The research results provide foundation for the landslide susceptibility maps and hazard risk assessment.

关 键 词：LANDSLIDES slope stability affecting factors Three Gorges Reservoir self-organized criticality 

分 类 号：P642.22[天文地球—工程地质学] TV697.23[天文地球—地质矿产勘探]