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公路雪崩是多雪地域积雪较厚的山坡上发生的一种自然现象。由于其突发性,常常造成生命和财产损失。因此,研究雪崩,对减少灾害具有非常重要的意义。公路雪崩危险度评价是雪崩研究的一个重要方向。在提出“积雪单元”概念的基础上,将公路雪崩危险度评价分为区域雪崩危险度评价和点位雪崩危险度评价。从发生学角度论证了公路雪崩发生危险度评价的参评因素和指标体系。详细论证了两类评价各自的特征、操作性评价程序和方法。
An avalanche of the highway is a natural phenomenon that occurs on snowy thick snow slopes. Due to its sudden nature, it often leads to loss of life and property. Therefore, studying avalanches is of great importance to disaster reduction. Highway avalanche risk assessment is an important direction of avalanche research. Based on the concept of “snow cover unit”, the evaluation of the avalanche risk of highway is divided into the avalanche risk assessment of the area and the avalanche risk assessment of the site. From the point of view of occurrence, this paper argues the factors and index system of evaluating the avalanche risk of highway avalanches. The two types of evaluation of their respective characteristics, operational evaluation procedures and methods are demonstrated in detail.