摘要
泥石流是山区河谷地区由于强降水造成的自然灾害,是携带了大量泥沙和石块的特殊洪流,具有流速快、流量大和破坏性强等特点.以贵州省白甫河流域为研究区,在收集资料和野外勘查的基础上,选取坡度、海拔、汇流累计量、子流域面积、地质岩性、人类活动和土地覆盖等7个因子作为评价指标,利用AHP模型,确定每个因素的权重值,建立泥石流的区域风险评估模型,并据此进行了泥石流危险性分区.结果显示白甫河流域泥石流分布在西北部和东北部的危险性较高.较精准的泥石流危险性分区,不仅可以减灾防灾,同时还能有效保障当地人民的生命财产安全.
Debris flow is a natural disaster caused by heavy rainfall in the valley area of the mountain area,is to carry a lot of mud and stones of a special flood,with the characteristics of fast flow,large flow and high damage. In this paper,the Baifuhe Basin of Guizhou Province as the research area,on the basis of collecting data and field survey,7 factors such as slope,altitude,slip flow measurement,sub basin area,geological lithology,human activities and land cover were selected as the assessment index,using AHP model,the weight value of each factor was determined,regional risk assessment model for debris flow was established,according to the above,the debris flow hazard zoning was carried out. The results showed that debris flow of Bai Fuhe Basin distributed in northwest and northeast was the higher risk,more accurate debris flow hazard zoning not only can reduce and prevent disaster,but also effectively protect the lives and property of the local people,so that people's lives and the economy has been sustained development.
出处
《凯里学院学报》
2016年第6期125-129,共5页
Journal of Kaili University
