摘要
为了最大程度减少因地质灾害伤亡和经济损失,研究了某区域地质灾害风险,主要地质灾害为崩塌、滑坡和地面塌陷,在GIS平台上,基于研究区数字高程模型(DEM)提取山脊、沟谷线,结合人工调整和现场调查结果等对研究区进行斜坡单元划分,共划分出327个评价单元;采用矩阵分析方法得出地质灾害风险性评价。研究得出,研究区地质灾害风险性评价结果将地质灾害防治区划分为重点防治区、次重点防治区、一般防治区,其中,重点防治区面积占研究区总面积的5.01%,次重点防治区面积占研究区总面积的20.20%,一般防治区面积占研究区总面积的74.79%。
In order to minimize the casualties and economic losses caused by geological disasters,studies the risk of geological disasters in a certain district.The main geological disasters are collapse,landslide and ground collapse.On the GIS platform,ridge and valley lines are extracted based on the digital elevation model(DEM)of the study area,and slope units are divided in combination with manual adjustment and field survey results,a total of 327 evaluation units were divided;the risk assessment of geological hazards is obtained by matrix analysis method.According to the study,the geological hazard risk assessment results of the study area divide the geological hazard prevention area into key prevention area,sub-key prevention area and general prevention area.The area of key prevention area accounts for 5.01% of the total area of the study area,the area of sub-key prevention area accounts for 20.20% of the total area of the study area,and the area of general prevention area accounts for 74.79% of the total area of the study area.
作者
姬萌蕾
姬寅东
王誉龙
张苏苏
袁青松
JI Menglei;JI Yindong;WANG Yulong;ZHANG Susu;YUANG Qingsong;无(Geological Disaster Prevention and Control Center of Henan Provincial Bureau of Geology,Zhengzhou 450000,China;Henan Institute of Geological Sciences Co.,Ltd.,Zhengzhou 450000,China;Henan Fifth Geological Exploration Institute Co.,Ltd.,Zhengzhou 450000,China;Henan Provincial First Geological Exploration Institute Co.,Ltd.,Zhengzhou 450000,China;Henan Provincial Institute of Geology,Zhengzhou 450000,China)
出处
《煤炭技术》
CAS
2024年第4期200-203,共4页
Coal Technology
基金
2021年省财政地质灾害防治新立项目(豫财招标采购-2021-929-包13)。
