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为了对中巴公路国内段沿线泥石流易发性等级进行评价,综合运用熵权法和可拓学理论,建立了基于可拓学理论的泥石流易发性等级评价模型。结合实地调查和遥感图像的解译结果,确定了10个泥石流易发性评价指标;利用熵权法计算得到了各评价指标的权重系数。然后根据可拓学理论确定了经典域、节域和关联函数,建立了泥石流易发性等级评价模型,并对研究区10条典型的泥石流沟进行了易发性等级评价。经计算,其泥石流易发性等级全部处于高易发以上。研究表明:采用基于可拓学理论的模型对泥石流易发性等级进行评价是合理的、可行的。
In order to appraise the susceptibility level of debris flow along the domestic segment of the CMB highway, this paper established a grading model of susceptibility to debris flow based on the theory of extenics by comprehensively using entropy method and extenics theory. According to the results of field survey and interpretation of remote sensing images, 10 indexes of debris flow susceptibility were determined. The weight coefficients of each index were calculated by entropy method. Then, based on the theory of extenics, the classical domain, section domain and correlation function are determined, and the evaluation model of the susceptibility to debris flow is established, and the susceptibility assessment of 10 typical debris flow ditches in the study area is conducted. After calculation, the susceptibility level of mudslides are all above the high-prone. The research shows that using the model based on extenics theory to evaluate the susceptibility level of debris flow is reasonable and feasible.