Study on Framework of Evaluation System of Water Hazard in Mountainous Highway

In order to improve the anti-water hazard ability of the mountainous highway,the basic concepts included in the risk evaluation system of water hazard,such as danger,vulnerability,loss,risk and benefit,have been explained in detail on the basis of site investigation and research.The proposal that the system should include hazard evaluation,vulnerability evaluation,risk evaluation and disaster reduction benefit evaluation is put forward.And the water hazard evaluation system of road net should be laid on the points,lines and sections.A three-dimensional hazard evaluation system has been established first time.Meanwhile,it is pointed out that the engineering evaluation of the ability of waterproof,drainage and anti-water hazard of current road is an important basis of the investment decision of washout protective project,which should be paid enough attention.The evaluation should lay particular emphasis on sites,considering lines appropriately.At last,the basic evaluation models are set up from four aspects,including hazard factors,hazard bodies,hazard situation and hazard reduction.