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依据大量的现场调查,研究了工程地质岩组、断层密度、坡度、坡高、地震峰值加速度、日平均最大降水量和植被盖度7个要素对滚石灾害影响的层次性和差异性,并利用层次分析模型(AHP)和GIS获得了研究区滚石的危险性分布地图,对陇南强震区的滚石灾害进行了危险性评价。深入研究滚石与不同影响要素的相关性是进行滚石区划的基础,本文的滚石灾害危险评价方法具有一定的应用价值。
Based on a large number of field surveys, the stratification and difference of the influence of seven elements of engineering geology, fault density, slope, slope height, peak earthquake acceleration, daily average maximum precipitation and vegetation coverage on the rockfall disaster are studied. Analytic Hierarchy Process (AHP) and GIS have obtained the risk distribution maps of the rolling stones in the study area, and have carried out the risk assessment of the rolling stones in the strong earthquake area in Longnan. Studying the relationship between the rolling stones and the different influencing factors is the basis for the rolling classification. The risk assessment method for the rolling stones in this paper has some practical value.