导流堤遭受泥石流灾害的易损性评价

开展导流堤易损性研究，为泥石流地区防治工程等级的划定和导流堤防灾减灾能力的判定提供了一种有效的方法。以雅泸路雀儿沟导流堤遭受的泥石流灾害为工程背景，参照有关易损性的研究成果，提出导流堤易损性的概念。结合泥石流致灾特征和导流堤承灾时的特点，建立泥石流危害作用下导流堤的工程易损性评价方法，并利用所提出的组合层次法处理指标权重问题。采用该评价方法对雀儿沟导流堤进行易损性评价，结果为高度易损性，说明该导流堤工程的整体运行情况较差，防护能力较低，需要及时对其采取相应的应急处理措施，以保证其能够正常服役。评价结果与现场实地调查情况和定量计算结果一致，验证了方法的可行性。

Evaluation of vulnerability of diversion dike suffering from debris flow disasters

The vulnerability assessment of diversion dike was studied in order to provide an effective method for the determination of the rank of prevention and control engineering and the assessment of disaster prevention and mitigation capability of diversion. By taking Queer Gully diversion dike of Yalu Road suffered debris flow disaster as engineering background, referring to previous research results on vulnerability, the concept of vulnerability of diversion dike has been proposed in this paper. According to the characteristics of debris flow to cause disaster and the characteristics of the diversion dike bearing the disaster, the engineering vulnerability evaluation method of diversion dike suffering from debris flow is established, and the combination hierarchy method is used to solve the problem of index weight. The established evaluation method is applied to assess the diversion dike of Queer Gully and the result is highly vulnerable, which shows that the overall operation of the project in the study area is poor and the protection ability is weak. It is necessary to take measures in time to ensure its normal service. The evaluation results are consistent with the field investigation and quantitative calculation results, which verifies the feasibility of the method.