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首页> 外文会议>World Landslide Forum 3, Volume 4: Discussion Session >Geo-hazard Characteristics and Susceptibility Assessment in Ziyang District Area, China
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Geo-hazard Characteristics and Susceptibility Assessment in Ziyang District Area, China

机译：资阳区地区地质灾害特征及敏感性评价

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摘要

An analysis of geo-hazard characteristics and susceptibility assessment in Ziyang district, China are presented.At first, a geological disasters survey was carried out to collect the data sets of geological hazards in this district and the characteristics and controlling parameters of geo-hazards were analysed from 3 and 6 aspects, respectively.According to the parameters, 9 factors namely, slope, gradient, slope aspect, slope shape, lithology, distance from faults, distance from rivers, distance from roads and annual rainfall were chosen as the impact factors which affected the occurrence of geo-hazards.In order to determine the importance that 9 impact factors had on the occurrence of geo-hazards, analytic hierarchy process (AHP) method was used to calculated the weight coefficients of these factors.Using grid computing tools in ArcGIS, superposed calculation was adopted on the 9 factor weights and geological disasters susceptibility assessment was finished.At last, a susceptibility map was created and showed 3 classes of geological disasters susceptibility, i.e., high, moderate and low.The assessment results showed satisfactory agreement between the existing geological disasters and susceptibility map.
机译：首先对紫阳县进行了地质灾害调查，收集了该地区地质灾害的数据集，并对地质灾害的特征和控制参数进行了分析。分别从3个方面和6个方面进行分析。根据参数，选择9个影响因素，分别是坡度，坡度，坡度，坡度，岩性，断层距离，河流距离，道路距离和年降水量。为了确定9个影响因素对地质灾害发生的重要性，使用层次分析法（AHP）来计算这些因素的权重系数。使用网格计算工具在ArcGIS中，对9个因子权重进行了叠加计算，完成了地质灾害敏感性评估。绘制了地质图，并显示了高，中，低3类地质灾害易感性。评估结果表明，现有地质灾害与敏感性图之间的一致性令人满意。

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