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应用机载ADS40可见光航空遥感数据,对汶川地震重灾区道路交通的受损情况进行了实时评估。通过对道路交通损坏情况的统计分析,得出影像覆盖范围内的交通受损总体情况为:国道受损7.7%、省道受损10.2%,县级和乡级道路也受到不同程度的损坏;将受损情况按县统计,则汶川道路受损最为严重——受损率达22%;同时得出了各级道路受损程度及其与地质、地形和地震烈度的关系,即道路受损情况与地震烈度密切正相关,严重受损道路集中分布于地震烈度为9,10和11度的区域,烈度越大道路损坏越严重;道路损坏程度同时也受地形和地层岩性条件的影响。
The airborne ADS40 visible airborne remote sensing data was used to evaluate the damage of road traffic in the hardest hit by the Wenchuan earthquake. Through the statistical analysis of road traffic damage, we can draw the conclusion that the traffic damage in the coverage area of the video is as follows: the damage of national highway is 7.7%, the damage of provincial highway is 10.2%, and the roads of county level and township level are damaged to some extent; According to the statistics of the damaged area, the Wenchuan Road suffered the most serious damage - with a damage rate of 22%. At the same time, the relationship between the damage degree at various levels and the geology, topography and earthquake intensity, that is, the damaged road The situation is closely related to the intensity of the earthquake. The severely damaged roads are concentrated in the areas of 9, 10 and 11 degrees of seismic intensity. The more severe the road is, the more serious the damage is. The degree of road damage is also affected by the topography and formation lithology conditions.