大沙窝滑坡-泥石流灾害链成灾机理及防治措施分析  

Analysis of Disaster Mechanism and Prevention Measures for the Dashawogou Landslide-Debris Flow Disaster Chain

作　　者：王春红 刘霞 胡爱国 WANG Chunhong;LIU Xia;HU Aiguo(Sichuan No.9 Geological Brigade,Deyang 618000,China)

机构地区：[1]四川省第九地质大队,德阳618000

出　　处：《地质灾害与环境保护》2025年第1期1-5,共5页Journal of Geological Hazards and Environment Preservation

基　　金：德阳市科技计划项目社会发展(编号:2022SZ064)。

摘　　要：2020年9月14日凌晨,在一次短时强降雨下大沙窝沟上游段左侧斜坡突然失稳滑入沟道,并引发了大沙窝沟暴发泥石流。通过研究大沙窝滑坡-泥石流灾害链的形成机理,能较准确地为该灾害链的防治工作提供依据。利用无人机航空摄影、地形测绘、遥感解译、钻探等勘查手段,对该灾害链发生的孕灾环境条件和成灾过程进行分析,结果表明连续多日强降雨是该灾害链发生的主要原因,该灾害链的防治可采取以拦为主、辅以防护的措施。In the early morning of September 14,2020,a short-duration heavy rainfall triggered a sudden slope failure on the left bank of the upper Dashawogou Gully,which subsequently initiated a debris flow.Investigating the formation mechanism of the Dashawogou landslide-debris flow disaster chain provides critical insights for its prevention and control.This study employs UAV aerial photography,topographic mapping,remote sensing interpretation,and drilling to analyze the disaster-pregnant environmental conditions and the disaster evolution process.Results indicate that prolonged heavy rainfall over multiple days was the primary cause of this disaster chain.For mitigation,a strategy prioritizing blocking measures supplemented by protective measures is proposed.

关 键 词：滑坡-泥石流 灾害链 成灾机理 防治措施 

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