【摘要】 本文以平武县文家坝滑坡为研究对象,从地质、地貌、水文3方面分析了该滑坡形成的条件;以遥感地质学相关理论为指导,在地质资料、地形图、GPS数据的支撑下,经过实地验证,建立了滑坡解译标志;对震后SPOT5影像进行解译,提取出滑坡周界、滑坡要素等信息,估算出滑坡规模,分析了滑坡的发育特征;确定滑坡的坡度、岩性、地震因素、水文条件与区域降水量5个因子,采用层次分析法对滑坡危险性进行了分析;最后以滑坡潜在风险体为对象进行风险评估,并给出以工程治理为主的风险管理方案。更多还原

【Abstract】 This paper took the Wenjiaba landslide of Pingwu County as the research object,3 factors of the landslide formative conditions were analyzed: geological,geomorphic and hydrological conditions.Based on the theories of remote-sense geology and with the support of geological information,topographical maps,GPS data,and conducted a field survey,the interpretation keys were established.By interpreting the SPOT 5 images,the landslide boundary and landslide factors information were extracted,the volume was estimated and its development feature was analyzed.According to the interpretation result,5 features were chosen as the assessment factors: slope gradient,lithological character,seismic effect,hydrological conditions and rainfall amount of the landslide,making a risk evaluation by using AHP(analytic hierarchy process) method.Finally,taking the potential dangerous factors as the subject,a risk assessment was made,while risk management was mainly based on project control method.更多还原