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一、长隧道机械通风在我国铁路发展中的地位及其现状我国是铁路隧道较多的国家之一,五十年代建成的长隧道需要机械通风的只有39座,其中最长的是川黔线凉风垭遂道,长4270m。六十年代增加到80座,其中最长的是成昆线沙木拉达隧道长6383m。七十年代到1979年底我国已修建铁路隧道4386座,总延长2009km,其中已设计了运营通风系统的长隧道有136座,总延长约为386km(占我国隧道总延长的19.3％)。随着我国隧道工程技术的发展,需要机械通风的长隧道,在数量和长度方面都将随之增加,蒸汽机车还要较长时期使用,因而隧道通风系统仍然是我国长隧道不可缺少的配套工程。
First, the long tunnel mechanical ventilation in the status of China’s railway development and its status China is one of the more railway tunnels in the country, the long tunnel built in the 1950s only 39 mechanical ventilation, of which the longest is the Sichuan-Guizhou line Liangfeng Pass tunnel, length 4270m. The sixties increased to 80, the longest of which was 6383m long as the sand-Lamda tunnel of Cheng-Kun Line. From the 1970s to the end of 1979, 4386 railway tunnels were built in our country, with a total extension of 2009km. Among them, 136 have been designed for long tunnels for ventilation systems, with a total extension of 386km (accounting for 19.3% of the total tunnel extension in China). With the development of tunnel engineering in our country, the long tunnel requiring mechanical ventilation will increase both in terms of quantity and length, and the steam locomotive will be used for a longer period of time. Therefore, the tunnel ventilation system is still an indispensable supporting project for the long tunnel in our country .