论文部分内容阅读
随着我国高等级公路建设的不断发展,特别是国家7918公路网的建设,公路隧道增长速度在加快,建设规模越来越大。据统计,截止2007年底,我国已建成的公路隧道已有4673座,长度达到2555.5公里,在建或建成通车的3公里以上的特长隧道已达200余座,隧道运营管理的任务已十分艰巨,也面临着许多亟待解决的问题。
With the continuous development of high-grade highway construction in our country, especially the construction of national 7918 highway network, the growth rate of highway tunnels is accelerating and the construction scale is getting bigger and bigger. According to statistics, by the end of 2007, there have been 4,673 highways and tunnels built in our country, with a length of 2,555.5 kilometers. More than 200 special-built tunnels have been built or opened to traffic for more than 3 kilometers. The task of tunnel operation and management has been extremely arduous. Also faces many problems to be solved.