本文選題：確定性系數(shù)法　切入點：影響因子　出處：《人民長江》2017年10期

【摘要】：以粵西高州市馬貴河流域為靶區(qū),通過主成分分析法確定了影響崩塌滑坡災害的主因子及其權(quán)重,得到主因子耦合作用下崩塌滑坡災害的易發(fā)性分區(qū)。結(jié)果表明:(1)坡度、水系、地層巖性、公路和高程為影響崩塌滑坡災害的主因子,累計貢獻率80%;(2)≥30°坡度區(qū)間,200~800 m水系距離,第四紀、侏羅紀和晚元古代地層,≤2 000 m公路距離,300~700 m高程區(qū)間分別為5大主因子的高敏感性區(qū)間;(3)高易發(fā)區(qū)域主要分布在馬貴鎮(zhèn)、深水村、三家村和六塘村,居民點分布廣、災害嚴重。建議加強群測群防和專業(yè)監(jiān)測,做好防災減災工作。確定研究區(qū)崩塌滑坡災害的主控因子、高敏感性區(qū)間和易發(fā)性分區(qū),可以指導當?shù)鼐用竦纳a(chǎn)生活、經(jīng)濟建設(shè)布局和防災減災,具有重要的工程實際意義。
[Abstract]:Taking the Magui River Basin of Gaozhou City in western Guangdong as the target area, the main factors and their weights affecting the landslide disaster are determined by principal component analysis, and the susceptibility zoning of the landslide disaster under the coupling of the main factors is obtained.The results show that slope, water system, stratigraphic lithology, highway and elevation are the main factors affecting landslide disaster, the cumulative contribution rate is 80 ~ 2) 鈮，

本文編號：1720140