乌盟共有沥青路面519公里,分布在国道及流量较大的省道和城市进出口处,多数是渣油表面处治,其分布、路龄情况如表1、表2。在多年的养护工作中我们发现,以上几条油路由于修建年代、基层构造及所处的地带类型的差异,其养护修补的方式也应有所不同,大致分为以下几种: A total of 519 km of asphalt pavement Um, located in the national highway and the flow of larger provincial and urban import and export, most of the residue surface treatment, the distribution of road age as shown in Table 1, Table 2. During many years of conservation work, we found that due to differences in the construction age, grassroots structure and the types of zones in which the above oil lines are located, the ways of conservation and repair should be different and broadly divided into the following categories: