灾害学2018，Vol.33Issue(2)：200-205,211,7.DOI:10.3969/j.issn.1000-811X.2018.02.035
天山北麓溜砂坡分布特征及易发性研究
Distribution Characteristics and Susceptibility of Talus Slopes in the Northern Piedmont of Tian-Shan Mountain
摘要
Abstract
As a kind of special disaster which is widely distributed in periglacial environment,the talus slope is characterized by poor stability,high burst and strong recurrence,thus it is prone to lose stability.Based on the field investigation to talus slopes in the northern piedmont of Tian-Shan mountain,the relationship between the spatial distribution characteristics and the influencing factors is statistically analyzed.3 types of evaluation indexes of geological environment,internal and external force and human engineering activity are choosed and index weights are quantified based on AHP-fuzzy comprehensive evaluation method to establish susceptibility evaluation model of talus slope.The main results of this research can be summarized as follows.(1) Talus slopes are mostly distributed in periglacial environment at the altitude of 1600 ～2500m,hard rock like basalt and sand slate,fragment and subblock structure,shady slope and semi-shady slope;(2) Altitude,freeze thaw weathering action and lithology are main factors which affect the susceptibility of talus slope;(3) The results of the example show that the susceptibility evaluation model of talus slope has good applicability and accuracy.关键词
溜砂坡/分布特征/AHP-模糊综合评价法/易发性评价/天山北麓Key words
talus slope/northern piedmont of Tian-Shan mountain/distribution characteristics/AHP-fuzzy comprehensive evaluation method/susceptibility evaluation分类
资源环境引用本文复制引用
罗路广,裴向军,裴钻,阳博,荆翔..天山北麓溜砂坡分布特征及易发性研究[J].灾害学,2018,33(2):200-205,211,7.基金项目
交通运输部基金项目(2013318800020) （2013318800020）
国家创新性群体基金(41521002) （41521002）
