地球科学与环境工程河南科技HenanScienceandTechnology总第800期第6期2023年3月降雨过程中堆积体边坡瞬态稳定性分析刘晓广王晶莹（华北水利水电大学地球科学与工程学院，河南郑州450046）摘要：【目的目的】以豫西渑池县槐扒滑坡为地质原型，探究降雨条件下堆积体边坡变形破坏启动机制。【方法方法】基于前人研究建立概化堆积体边坡的地质模型和数值试验模型。【结果结果】降雨作用下，坡脚首先发生破坏，随后牵引斜坡发生整体变形破坏。边坡灾变过程可描述为3个阶段：①雨水入渗—堆积体边坡浸润变形阶段；②堆积体边坡裂缝发展阶段；③滑坡发生阶段。【结论结论】其变形破坏过程可以概括为：坡脚变形破坏—中后部变形发展—裂缝发育贯通—滑坡发生。关键词：堆积体；降雨；模型试验；灾变过程中图分类号：TU434文献标志码：A文章编号：1003-5168（2023）06-0117-06DOI：10.19968/j.cnki.hnkj.1003-5168.2023.06.023TransientStabilityAnalysisofAccumulationSlopeDuringRainfallLIUXiaoguangWANGJingying（CollegeofEarthScienceandEngineering,NorthChinaUniversityofWaterResourcesandElectricPower，Zhengzhou450046,China）Abstract:[Purposes]TakingHuaibalandslideinMianchiCounty,WestHenanProvinceasageologicalprototype,theinitiationmechanismofslopedeformationandfailureofaccumulationbodyunderthecon⁃ditionofrainfallwasinvestigated.[Methods]Thegeologicalmodelandnumericaltestmodelofgeneral⁃izedaccumulationslopewereestablishedbasedonpreviousstudies.[Findings]Undertheactionofrain⁃fall,theslopefootfirstfailedandthenthetractionslopedeformedandfailedasawhole.Theprocessofslopedisastercanbedescribedasthreestages:①rainwaterinfiltration—accumulationbodyslopeinfil⁃trationdeformationstage;②Developmentstageofslopecrackofaccumulationbody;③stageofland⁃slideoccurrence.[Conclusions]Thedeformationandfailureprocesscanbesummarizedasfollows:slopetoedeformationandfailure—middleandreardeformationdevelopment—fracturedevelopment—land⁃slideoccurrence.Keywords:accumulationbody;rainfall;modeltest;cataclysmicprocess0引言在我国滑坡灾害中，堆积体滑坡占据85%以上［1］。堆积体滑坡具有分布范围广、爆发频率高、持续危害大的特点。降雨是触发堆积体滑坡主要因素，深入研究降雨条...
