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我国是世界上铁路隧道最多的国家 ,据不完全统计 ,截至 1999年末 ,建成的铁路隧道已逾 6 80 0座 ,总延长达 36 6 7km。其中有许多是在不同时期修建的具有标志性意义的长隧道 ,代表着我国铁路隧道的建造能力和技术水平。这里刊载我国已建成的 3km以上长隧道共 15 5座的简况 ,以飨读者
China has the largest number of railway tunnels in the world. According to incomplete statistics, as of the end of 1999, over 6 80 0 railway tunnels were completed, with a total extension of 36,670 km. Many of them are long tunnels of landmark significance built at different times, representing the construction capability and technical level of China’s railway tunnels. Here is a brief account of a total of 15 5 tunnels of over 3 km built in our country.