华南地质2026，Vol.42Issue(4)：692-703,12.DOI:10.3969/j.issn.2097-0013.2026.04.010
三峡库区香溪河下游右岸崩滑流灾害频发的原因浅析
Analysis of the Prime reasons for the Occurrence of Avalanches,Landslides and Mudstone Flows Frequently on the Right Bank of Xiangxi River Downstream in the Three Gorges Reservoir Area
摘要
Abstract
[Objective]From the estuary to Youjiahe,the section has been the site of frequent occurrence of avalanches,landslides and mud-stone flows frequently on the right bank of Xiangxi River downstream in the Three Gorges Reservoir area.In recent years,the risk of geological disasters has increased due to the increasing frequency of extreme rainfall.Therefore,it is urgent to sort and clarify the reasons of these disasters in order to prepare for prevention,reduction and rescue.[Methods]Based on studying and sorting those previous literatures about the basic geological background of the bank slope,the Fairy Mountain fault zone extending northward crossing the Yangtze River and general understanding of disaster causes,this paper uses induction and analogy methods to conduct research on disaster patterns and analyze influencing factors.[Results]This paper summarizes 4 types of disaster pattern,which include landslides or mudflows derived from avalanche in reverse steeply inclined structure bank slope,avalanches or landslides in blocky sandstone in steeply inclined structure of diagonal bank slope,avalanches or landslides of wedge and groove shape in steeply inclined structure of horizontal bank slope,reactivated landslides of accumulations of ancient geological disasters.[Conclusions]This paper puts forward that Xiangxi River fault is a section of the fairy mountain fault zone,which controlled belt distribution of tectonic earthquakes,avalanches and landslides;at the same time,coal mining,collapse above mining goafs and frequent low-magnitude earthquakes are the prime reasons for frequent avalanches,landslides and mudflows nowadays,and heavy rainfall and severe erosion of surface water are important triggers and external driving forces for the occurrence of disasters in ancient and modern times on the right bank of Xiangxi River downstream in the Three Gorges Reservoir area.关键词
三峡库区/香溪河/仙女山断裂带/采空塌陷/水库地震/成灾模式Key words
Three Gorges Reservoir/Xiangxi River/the fairy mountain fault zone/collapse above mining goaf/reservoir earthquake/disaster patterns分类
天文与地球科学引用本文复制引用
常宏,吴吉民,李逵,刘辉..三峡库区香溪河下游右岸崩滑流灾害频发的原因浅析[J].华南地质,2026,42(4):692-703,12.基金项目
水利部"三峡库区崩塌滑坡地质灾害监测预警"项目(102202260070000000001) （102202260070000000001）
三峡库区阶跃型滑坡预警研究(TICG-K2025-005) （TICG-K2025-005）
