摘要
本文以安徽省怀宁县崩塌、滑坡和泥石流孕灾地质条件为研究对象,在分析怀宁县以往地质灾害调查成果基础之上,进行总结性分析研究,阐述了崩塌、滑坡孕灾地质条件和泥石流孕灾地质条件的基本特征,初步分析了地质灾害的形成机理。研究认为,不同地质条件对地质灾害的控制方式和影响程度不同,区内崩塌、滑坡孕灾地质条件按影响程度由大到小为地形地貌、易崩易滑地层、致塌致滑构造、工程地质岩组、斜坡结构、风化程度和大气降水等七类,泥石流孕灾条件为局部特殊汇水地形地貌条件、山坡中下部松散堆积物物源条件和持续大暴雨带来的水源条件等三类。本文研究成果可为后期怀宁县地质灾害风险调查评价工作提供重要依据,同时也为同行在孕灾地质条件调查和研究方面提供一定价值的参考。
Focusing on the features of the geological conditions inducing hazards of collapse,landslide and debris flow in Huaining County,Anhui Province,based on the analysis of the results of previous geological hazard survey in the area,this paper makes a summary analysis of the hazard-inducing geological conditions and basic features of the hazards,probes into the formation mechanism of the hazards.According to the study,different geological conditions have different control methods and influence degrees in respect to geological hazards.The inducing geological conditions of collapse and landslide in the area are divided into seven categories from large to small according to the influence degree,such as terrain and landform,collapsible and sliding stratum,collapsible and sliding structure,engineering geological formation complex,slope structure,weathering degree and atmospheric precipitation.Debris flow-inducing conditions include local special catchment landform conditions,loose sediment source conditions in the middle and lower slopes and water source conditions brought by continuous heavy rain.The research results of this paper can provide an important basis for the later investigation and evaluation of geological hazard risk in Huaining County,and also provide some valuable reference for colleagues in the investigation and research of hazard-inducing geological conditions.
作者
蔡生来
CAI Sheng-lai(No.326 Unit,Bureau of Geology and Mineral Exploration of Anhui Province,Anqing,Anhui 246003,China)
出处
《安徽地质》
2021年第3期265-269,共5页
Geology of Anhui
关键词
崩塌
滑坡
泥石流
孕灾地质条件
collapse
landslide
debris flow
hazard-inducing geological conditions
