泥石流的影响因素众多,而且对于不同地区甚至是不同泥石沟,各影响因子的重要性也不尽相同. 根据现场勘查分析选取了松散固体物质储量等10个主要影响因子,并利用突变理论中的突变综合系数评价法,对乌东德水电站附近的5条泥石流沟危险度进行评估,按危险度分级标准将各评价指标值标准化,然后再逐级计算得出了各泥石沟的危险度,研究结果基本符合现场实际勘查结果.%There are many factors related to the debris flow, however the importance of different factors varies to different re-gions or debris flow gullies. According to the field investigation, 10 main factors such as the reservation of loose mass etc. are se-lected to evaluate the risk degree of 5 debris flow gullies near Wudongde Hydropower Station by using the catastrophe theory. The evaluation index value is normalized based on the grading standard of risk degree of the debris flow and the risk degree of each debris flow gully is calculated. The results are in accordance with that of the practical field exploration.
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