湖北巴东组滑坡精细化识别方法研究  

Fine Identification for Landslides of Badong Formation in Hubei Province

作　　者：梁叙[1] 李兴明 Liang Xu;Li Xingming(College of Environment and Engineering,Hubei Land Resources Vocational College,Wuhan,Hubei 430090)

机构地区：[1]湖北国土资源职业学院环境与工程学院,湖北武汉430090

出　　处：《资源环境与工程》2023年第4期464-474,共11页Resources Environment & Engineering

基　　金：渝西—鄂东巴东组滑坡变形破坏机理与有效防治对策研究(202212)。

摘　　要：为提高地质灾害风险早期识别能力,开展地质灾害隐患点在哪里的识别工作是建设预警信息化工程的基础。以宣恩地区巴东组滑坡为研究对象,分析评价不同空间尺度的滑坡危险性大小,在此基础上概化巴东组滑坡工程地质模型,实现巴东组滑坡从“县域—重点区域—单点滑坡”的精细化过程识别。结果表明,万寨乡中部、珠山镇与椒园镇接壤区、长潭河乡西南部、李家河乡和沙道沟镇南部及两镇接壤区域等5处为县域滑坡高—极高危险区,面积合计674.71 km^(2),占宣恩县域面积的24.65%;万寨乡北部、椒园镇和珠山镇接壤区域等处是巴东组重点区域巴东组滑坡高—极高危险区,面积合计59.72 km^(2),占重点区域总面积的46.99%;影响巴东组滑坡发育的因子互权重排序为:岩层倾角>斜坡结构>高差>坡度>水系密度,由此概化的4类工程地质模型包含巴东组区域近80%的巴东组滑坡。研究成果对精细化识别区域地质灾害隐患点在哪里有理论和工程指导意义,也为滑坡的早期识别方法提供了思路。In order to improve the early identification ability of geological disaster risk,it is the basis of the construction of early warning information engineering to identify the hidden danger points of geological disasters.The landslide of Badong Formation in Xuan en area was taken as the research object,the landslide risk of different spatial scales was analyzed and evaluated.On this basis,the engineering geological models of Badong Formation landslide were generalized,and the fine process identification of Badong Formation landslide from“county-key area-single point landslide”was realized.The results showed that the middle part of Wanzhai town and the boundary area of Zhushan Town and Jiaoyuan Town,the southwest of Changtanhe Township,the south of Lijiahe Township and Shadaogou Town and the border area of the two towns were the high-high risk areas of landslide in the county,with a total area of 674.71 km^(2),accounting for 24.65%of the area of Xuan en County.The northern part of Wanzhai Township,Jiaoyuan Town and Zhushan Town were the high-extremely high-risk areas of the Badong Formation landslide in the key area of the Badong Formation,with a total area of 59.72 km^(2),accounting for 46.99%of the total area of the key area.The order of the factors influencing the development of landslides in Badong Formation was terrane dip angle>slope structure>height difference>slope>water system density.The four kinds of engineering geological models thus summarized contain nearly 80%of the Badong Formation landslides in the Badong Formation area.The research results have theoretical and engineering significance for fine identification of regional geological disaster hidden danger points,and also provide ideas for early identification of landslides.

关 键 词：滑坡 巴东组 精细化识别 工程地质模型 宣恩地区 

分 类 号：P642.22[天文地球—工程地质学]