地质通报2012，Vol.31Issue(2)：351-355,5.
基于模糊数学法评价滇西保山地区麻榔河泥石流沟的危险性
Fuzzy comprehensive evaluation for risk assessment of the Malanghe debris flow gully in Baoshan area, western Yunnan Province
摘要
Abstract
Through investigation of the characteristics of the Malanghe dehris flow on the east bank of the Nujiang River in Baoshan City, Yunnan Province, and determination of the age of the diluvium by OSL, this paper holds that die debris flow gully is young and dangerous. According to the complexity and randomness of specific factors which control and affect the dangerous degree of the debris flows, die fuzzy comprehensive evaluation was adopted to evaluate die fatalness of the debris flow. In this paper, seven factors were chosen as the main relevant factors. The evaluation result is the same as that of the field investigation, and the fatalness is in the degree of moderate risk (HI). Two key points in the evaluation process are pointed out in this paper, I.e., the establishment of the weight sets and the determination of the degree of membership. The first point is achieved and optimized by minimizing the distance summation between "ideal points"; and the second is implemented through the membership function designed on the basis of the half trapezoid distribution model. Repeated experiments have confirmed that this method is workable and more practical than other methods.关键词
模糊数学/麻榔河泥石流/危险度评价/滇西Key words
fuzzy comprehensive evaluation/ Malanghe debris flow/ risk assessment/ western Yunnan Province分类
天文与地球科学引用本文复制引用
杨艳,张绪教,叶培盛,胡悦,吴中海..基于模糊数学法评价滇西保山地区麻榔河泥石流沟的危险性[J].地质通报,2012,31(2):351-355,5.基金项目
中国地质调查局项目《云南1∶5万马厂幅、道街坝幅区域地质调查》(编号:1212010784004)和《泛亚铁路大理至瑞丽沿线地质构造综合研究》(编号:1212010814054) （编号:1212010784004）
