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由于影响泥石流危险性的因素很多,定性和定量因素关系复杂,导致各因素的权重很难确定,且目前尚无完善的泥石流危险性评价体系。以新疆某泥石流为例,通过将影响泥石流因子的定性和定量因素有机结合,选取了10个影响因子作为评价指标,采用层次分析法确定了各评价指标的权重,并基于可拓学理论确定了泥石流沟危险性等级,评价结果与实际调查相符,表明本文所用方法具有可行性。
Because of the many factors affecting the risk of debris flow, the relationship between qualitative and quantitative factors is complex, resulting in the weight of the various factors is difficult to determine, and there is no perfect risk assessment system for debris flow. Taking a debris flow in Xinjiang as an example, 10 influencing factors were selected as the evaluation indexes through the combination of qualitative and quantitative factors that affected the debris flow factors. The analytic hierarchy process was used to determine the weights of each evaluation index. Based on the extenics theory, Debris flow hazard level, the evaluation results consistent with the actual survey, indicating that the method used in this article is feasible.