工程地质学报Issue(6)：1176-1186,11.DOI:10.13544/j.cnki.jeg.2014.06.023
GIS支持下基于 CF方法的2013年芦山地震滑坡因子敏感性分析
LANDSLIDE FACTOR SENSITIVITY ANALYSES FOR LANDSLIDES TRIGGERED BY 201 3 LUSHAN EARTHQUAKE USING GIS PLATFORM AND CERTAINTY FACTOR METHOD
摘要
Abstract
This paper uses GIS technology as the operating platform and adopts the certainty factor method to carry out a more detailed susceptibility analysis of the 201 3 Lushan earthquake-triggered landslides.The analysis combines the basic situation of the earthquake zone and is based on the existing relevant factor data including topographic factors(elevation,slope angle,slope aspect,curvature),geological factors(lithology,distance from the deep active faults)and seismic factors (PGA,distance from the epicenter).Firstly,the eight seismic landslide impact factors are graded according to the characteristics of the study area with GIS technology as the platform.A different grading impact factor raster layer is built to complete the parameter statistics of seismic landslide distribution.The most sensitive grading interval is extracted for sensitivity analysis to measure the susceptibility sensitive degree of seismic landslide by different factors grading interval,which is from the value of certainty factor of eight seismic landslide impact factors.The sensitivity analysis of seismic landslide factor shows that the other six factors are very sensitive for landslide-prone and they are the main factors of terrain,geology and earthquake respectively except for curvature and the epicenter factor.The results that the curvature and the epicenter factor are not very sensitive for landslide-prone are further analyzed and discussed.The effect of the internal other factors is also analyzed.The SW aspect is likely to limit the sensitivity of curvature acting on seismic landslide-prone.The limiting is more obvious for lithology than the epicenter factor.Such limiting may not be applicable for the rock strata in Ordovician and Silurian.The results have a certain approach theoretical significance and a certain reference value for earthquake disaster reduction.关键词
芦山地震/地震滑坡/因子敏感性/CF/GISKey words
Lushan earthquake/Seismic landslides/Factor sensitivity/Certainty factor/GIS分类
天文与地球科学引用本文复制引用
刘丽娜,许冲,陈剑..GIS支持下基于 CF方法的2013年芦山地震滑坡因子敏感性分析[J].工程地质学报,2014,(6):1176-1186,11.基金项目
国家自然科学基金项目（41472202，41202235）和中国地震局基本科研业务费（IGCEA1215，IGCEA1302）资助． （）
