基于R型因子分析法的滑坡发育影响因素分析  

ANALYSIS OF LANDSLIDE INFLUENTIAL FACTORS ON R-FACTOR ANALYSIS

作　　者：王闫超[1] 苏生瑞[1] 李鹏[1] 丛璐[1] 

机构地区：[1]长安大学地质工程与测绘学院,西安710054

出　　处：《工程地质学报》2014年第1期30-37,共8页Journal of Engineering Geology

基　　金：国家自然科学基金项目(41072223)资助

摘　　要：以陕西省岚皋县境内滑坡为研究对象,借助R型因子分析法,对滑坡发育的影响因素进行分析研究。结果表明:起主导作用的主项因素按照其影响作用的大小依次为滑坡前缘河流影响距、人类工程活动、地形地貌和控滑结构面;影响较大的分项因素按照其影响作用的大小依次为滑坡体前缘河流影响距、开挖坡脚、原始斜坡坡向、控滑结构面倾向、耕地(占坡体百分比)和滑坡体碎石含量。结合影响滑坡发育的主项因素和分项因素,综合确定影响滑坡发育的主控因素按照其影响的作用大小依次为河流影响距、开挖坡脚、原始斜坡坡向、控滑结构面倾向。该问题的研究不仅可以为滑坡灾害的分析提供新的方法,而且对滑坡灾害的防灾减灾提供了一种新思路。Taking the landslides of Langao County as the object of study, R-factor analysis is used to analyze the influential factors of landslide development. The results are as follow. According to its degree of influence, the dominant lectors which contribute to landslide development from great to small are respectively the distance from the slope forward to the river, human engineering activities, landform and structural plane. The secondary lectors which contribute to landslide development from great to small are respectively the distance from the slope forward to the river, the excavation of slope toe, aspect of slope, dip of structural plane, topsoil（the percentage of slope area） and the detritus content of sliding mass. Combining the dominant terms and the secondary factors analysis, the main controlling factors, in turn, are the distance from the slope forward to the river, aspect of slope and dip of structural plane. This research provides not only a new analyzed method for landslide hazard, but also gives a new idea for prevention and mitigation landslide hazard.

关 键 词：滑坡 R型因子分析法 影响因素 

分 类 号：X43[环境科学与工程—灾害防治]