基于物元可拓的熵值泥石流危险性评价

摘要

通过选取能够反映和体现泥石流危险性的8项重要参数指标作为泥石流危险性评价指标，运用物元可拓理论和熵值确定权重法，建立泥石流危险性评价的物元可拓模型。应用建立的物元可拓模型，对舟曲县15条典型泥石流沟的危险性进行评价，得到的评价结果与实际情况相符合，同时也说明基于物元可拓的熵值法能较真实地反映实际泥石流沟的危险性等级，证明该方法应用于泥石流危险性评价的有效性和可行性。%Eight important indicators is selected as the hazard evaluation indexes ,which can reflect the risks of debris .The matter-element extension principle and entropy is applied to set up the model of hazard evaluation .By using this model , risk evaluations of 15 typical debris flow gullies of Zhouqu are conducted .It is proved that the evaluation results conform to the actual situation and also it indicates that the principle of matter -extension entropy can really reflect the level of the risk of debris flow .So this method is effective and feasible .