安徽怀宁章岭滑坡形成机理及防治措施研究  

Study on the formation mechanism and control measures of the Zhangling landslide in Huining Area,Anhui

作　　者：张少才 ZHANG Shaocai(Anhui Jinlian Geology and Mining Technology Co.,Ltd.,Hefei,Anhui 230001,China)

机构地区：[1]安徽金联地矿科技有限公司,安徽合肥230001

出　　处：《安徽地质》2023年第1期60-64,共5页Geology of Anhui

摘　　要：安徽怀宁章岭滑坡发育于高丘土质斜坡上,滑坡体岩性为碎石土,滑坡面主要为碎石土与黏土交界面,滑坡平面呈舌形,剖面呈弧形,后缘和侧翼发生了两次显著的拉裂下挫,前缘陡坎崩塌,前缘地面发生多处推挤剪出变形,是典型的牵引式土质滑坡。研究表明:该滑坡形成的内因主要是复杂的地形地貌、地层结构不良特性以及地下水动态剧烈变化;外因是人工切坡,诱发因素为持续降雨和暴雨。该滑坡危害方式是推倒瞭望塔、覆盖防汛通道阻断交通、破坏路面和挡土墙,并危及行人,危害性中等。目前滑坡体活动性极强,滑坡地质灾害风险高,建议采用裂缝填埋、抗滑桩支挡、削坡整形、截排水、生态修复和滑坡监测等工程措施进行治理。The Zhangling landslide in Huining County,Anhui is developed on the soil slope of a high hill.It is a body of of gravel soil in lithology,with the sliding surface being mainly the interface of gravel soil and clay.It is tongue-like in plane,with the section being curved,and its trailing edge and flank show two significant tensile falls,with the front scarp being collapsed,and the ground at the leading edge being pushed and sheared in several places,indicating a typical traction type soil landslide.The results show that the internal causes of the landslide are mainly the complex topography,poor stratigraphic structure and dramatic changes in groundwater dynamics,while the external causes are artificial slope cutting and the inducing factors are continuous rainfall and heavy rain.The hazardous way of the landslide is to topple the watchtower,cover the flood control channel to block traffic,damage the road surface and retaining wall,and endanger pedestrians.It is classified as moderate harm,and is still very strong in activity with high geo-hazard risk.Recommended control measures include the use of crack fill,anti-slide pile retaining,slope cutting re-shaping,drainage,ecological restoration and monitoring.

关 键 词：滑坡 变形特征 形成机理 成灾模式 防治措施 

分 类 号：P66[天文地球—地质学] P69