基于多尺度分析和综合评价法的登封市地质灾害易发性评价  

Evaluation of Geological Disaster Susceptibility in Dengfeng City Based on Multi-scale Analysis and Comprehensive Evaluation Method

作　　者：王瑞瑞 刘冰[4] Wang Ruirui;Liu Bing(Surveying and Mapping Geographic Information Institute,Henan Geological and Mineral Exploration and Development Bureau,Zhengzhou,Henan 450001;Henan Province Sky and Earth Remote Sensing Intelligent Monitoring Engineering Technology Research Center,Zhengzhou,Henan 450001;Science and Technology Innovation Center of Sky and Earth Remote Sensing Intelligent Monitoring Research of Natural Resources in Henan Province,Zhengzhou,Henan 450001;Information Engineering University,Zhengzhou,Henan 450001)

机构地区：[1]河南省地质矿产勘查开发局测绘地理信息院,河南郑州450001 [2]河南省天空地遥感智能监测工程技术研究中心,河南郑州450001 [3]河南省自然资源天空地遥感智能监测研究科技创新中心,河南郑州450001 [4]信息工程大学,河南郑州450001

出　　处：《资源环境与工程》2022年第3期351-356,397,共7页Resources Environment & Engineering

摘　　要：历史地质灾害数据反映了区域地质灾害的客观分布情况,可以直接作为地质灾害易发性的评价指标。应用地质灾害历史数据,并从不同的尺度对其进行加权综合分析,提出一种基于多尺度分析和综合评价法的地质灾害易发性评价方法。以登封市为研究区,选取历史地质灾害数据、坡度、坡高、坡型、岩土结构、植被指数、降雨量、人类工程活动8个因素作为评价指标,采用该地质灾害易发性评价方法,将研究区划分为高易发区、中易发区、低易发区3个区域。评价结果表明,登封市地质灾害高、中、低易发区面积分别为255.57、429.11、532.40 km^(2),分别占总面积的21.0%、35.3%、43.7%,所包含的历史灾害点分别占地质灾害点总数的54.5%、41.9%、3.6%。易发性分区结果与历史灾害分布情况吻合度较高,表明该评价方法能够较好地服务于地质灾害易发性评价工作。Historical geological disaster data reflect the objective distribution of regional geological disasters,which can be directly used as an evaluation index of geological disaster susceptibility.Based on the historical data of geological disasters and weighted comprehensive analysis from different scales,a research method of geological disaster susceptibility based on multi-scale analysis and comprehensive evaluation method is proposed.Taking Dengfeng City as the study area,eight factors including historical geological disaster data,slope gradient,slope height,slope type,geotechnical structure,vegetation index,rainfall and human engineering activities are selected as evaluation indexes.The evaluation method proposed in this paper is used to divide the study area into three regions:high-prone area,medium-prone area and low-prone area.The evaluation results show that the high,medium and low prone areas of geological disasters in Dengfeng City are 255.57 km^(2),429.11 km^(2) and 532.4 km^(2),accounting for 21.0%,35.3%and 43.7%of the total area,respectively.The historical disaster points included account for 54.5%,41.9%and 3.6%of the total geological disaster points,respectively.The results of susceptibility zoning are highly consistent with the distribution of historical disasters,indicating that the evaluation method can better serve the susceptibility evaluation of geological disasters.

关 键 词：地质灾害 易发性评价 多尺度分析 综合评价法 历史地质灾害数据 登封市 

分 类 号：P694[天文地球—地质学]