公路泥石流灾害危险性评价方法

Risk Assessment Method of Highway Debris Flow Disasters

为减轻泥石流对公路的危害,对公路泥石流灾害进行了危险性评价。分析了公路泥石流灾害的概念和分类,从地形地貌条件、物源条件、水源条件、人类工程活动条件和植被条件5方面研究了公路泥石流灾害的影响因素,建立了公路泥石流灾害危险性评价指标体系和公路泥石流灾害危险性评价模型,将公路泥石流灾害危险性分为无危险、低危险、一般危险和高危险4级。采用G108周至、佛坪和宁强3个路段的4处公路泥石流灾害点对公路泥石流灾害危险性评价模型进行了实例分析,评价结果与现场调查结果吻合,证明了本研究的合理性。

In order to reduce the damage of debris flow upon highway,risk assessment of highway debris flow disaster was managed. The concept and classification of highway debris flow disaster were analyzed,as well as the influencing factors from topography condition,material sources,water conditions,human engineering activities and vegetation condition. The assessment indicator system and assessment model of highway debris flow disaster were established,and the risk can be divided into no high risk,low risk,general risk and high risk. Four highway debris flow disaster points along G108 were used to the assessment model established in this paper,the assessment results are in occident with the investigation results,which prove the truth of this study.