【摘要】 针对陕西公路边坡灾害频发且存在区域分异的状况,对陕西公路边坡灾害进行了危险性分区研究。结合公路边坡地质与水毁灾害类型特点,分析了致灾因素,选取了危险性评价指标体系;采用云模型-AHP法和因素叠加法,计算了评价指标权重并构建了危险性评价数值计算模型;基于Arc GIS10.0软件计算生成了《陕西公路边坡灾害危险度图》,灾害危险度范围[1.4,8.375],并以危险度为指标,划分了极高[7,8.375]、高[6,7)、中[4.5,6)、低[3,4.5)、轻微[1.4,3)5种危险等级15个灾害区,其中:极高危险区为大巴山北坡地区,途径国道有G108、G210、G316,分区结果与公路边坡灾害实际相符。更多还原

【Abstract】 The risk regionalization of highway slope disasters was studied according to the status of frequent occurrence and regional differentiation of highway slope disasters in Shaanxi Province. Combined with the characteristics of geo-hazards and water damages of highway slope,risk assessment indicator system was selected through analyzing the causing disaster factors. Based on the method of cloud model-AHP and factors superposition,the weight of risk assessment indicators was calculated,and risk assessment model was also established. "Risk figure of highway slope disasters in Shaanxi province"was plotted by GIS,and risk degree was in the range of 1. 2 ~ 8. 725.In view of risk degree,the highway slope disasters in Shaanxi Province was rated into five risk levels including fifteen risk zones,namely extremely high risk area,high risk area,medium risk area,low risk area and slight risk area. The extremely high risk area was the north slope of Daba Mountain,and some national highway which included G108,G210 and G316 passed through this region. The result of risk regionalization was in accord with the actual situation of highway slope disasters in Shaanxi province.更多还原