和龙市泥石流灾害危险性分区评价  

Risk zoning and evaluation of debris flow hazards in Helong City

作　　者：宋雪妲[1] 邱建慧[1] 李广杰[1] 郎秋玲[1] 王志胜[1] 

机构地区：[1]吉林大学建设工程学院,吉林长春130026

出　　处：《世界地质》2004年第3期289-294,共6页World Geology

基　　金：国土资源部地质灾害大调查项目资助(220212400032)

摘　　要：泥石流是和龙市最主要的地质灾害。研究泥石流灾害危险性分区旨在为减轻和龙市地质灾害规划提供科学依据。本文运用灰色关联分析的方法,获取了评价和龙市泥石流灾害的定量指标,并计算了各指标的权重。在此基础上得出各区域的泥石流危险度,据此对各区域进行了危险性分区。泥石流高危险区位于和龙市东北部。这些区域地质灾害频繁发生主要是由植被覆盖率低、地质环境质量较差、人类工程活动不当等因素所致。The debris flow is a main geologic hazards in Helong City of Jilin Province. Researching the risk zoning of the debris flow hazards in Helong City aims at offering scientific basis for the program of alleviating the geologic hazards. Applying the method of grey-connected analysis,the authors obtained the quantitative index of assessing the debris flow hazards in the city,and the weight of every index,reaches the regional dangerous degree of the debris flow of each area were worked out according to calculating results. The risk zoning was studied based on them. More dangerous areas are located in the northeast part of Helong City. Frequent debris flow hazards in these areas are mainly because of lower vegetation coverage rate,worse geological environment,improper human projects,etc.

关 键 词：泥石流灾害 灰色关联分析 归一化 区域泥石流危险度 和龙市 

分 类 号：P642.23[天文地球—工程地质学]