【摘要】 为了解决在泥石流易发性评价过程中的随机性和模糊性的问题,选取了一次最大冲出量、泥石流发生频率、流域面积、主沟长度、最大相对高差、松散物源储量、泥砂补给段长度比、日最大降雨量、人口密度、植被覆盖率10个评价指标建立了基于正态云的评判模型。并以三条实测泥石流沟为例,对熵权法进行改进获取了各评价指标的权重,根据实测值利用正态云发生器得到评价指标的隶属度矩阵,再结合权重求得综合确定度,从而判断各条泥石流沟的易发性。更多还原

【Abstract】 In order to solve the problem of randomness and fuzziness in the evaluation process of debris flow,10 evaluation indexes,such as maximum output,frequency of debris flow,basin area,main groove length,maximum relative height difference,loose source reserves,length ratio of mud sand supply section,daily maximum rainfall,population density and vegetation coverage,were selected to establish a model of evaluation based on normal cloud. Taking three measured debris flow gullies as an example,the weight of each evaluation index is obtained by improved the entropy weight method. According to the measured values,the membership degree matrix of the evaluation index is obtained by using the normal cloud generator. Then,the comprehensive determination degree is obtained by combining the weights,so as to judge the vulnerability of each debris flow ditch.更多还原