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文章在甘肃省公路自然区划研究基础上,通过对直接影响公路工程建设的地貌、地质及植被等自然条件的综合分析,提出并定义了影响公路工程困难度的6个主要因子,建立了公路工程困难度指数的计算公式。通过对各因子的影响程度进行分级,对其分异性进行无量纲化标度,对各因子的权重进行专家赋值,确定了公式中各计算参数值。根据对甘肃省公路地貌区划中41个分区的公路困难度指数的计算成果,确定了甘肃省公路工程困难度的分区指标,并进行分区评价。
Based on the study of the highway natural division in Gansu Province, through the comprehensive analysis of the natural conditions such as landform, geology and vegetation that directly affect the highway construction, six main factors that affect the difficulty of highway construction are proposed and defined, and the highway engineering Difficulty index calculation formula. By grading the degree of influence of each factor, the non-dimensional scale of its differentiation is carried out, and the weight of each factor is assigned by experts, and the value of each calculation parameter in the formula is determined. According to the calculation results of the highway difficulty index of 41 subdivisions in the road topography of Gansu Province, the index of highway engineering difficulty in Gansu Province is determined and the subarea is evaluated.