截至2022年底中国铁路隧道情况统计及2022年新开通项目重点隧道概况

Statistics of Railway Tunnels in China by the End of 2022 and Overview of Key Tunnels of Projects Newly Put into Operation in 2022

对截至2022年底中国铁路隧道、高速铁路隧道、特长铁路隧道情况进行统计。结果显示,截至2022年底,中国铁路营业里程达到15.5万km,其中,投入运营的铁路隧道17873座,总长21978 km;中国已投入运营的高速铁路总长超过4.2万km,共建成高速铁路隧道4178座,总长7032 km,其中,长度大于10 km的高速铁路特长隧道105座,长约1339 km;中国已投入运营的特长铁路隧道共259座,长约3498 km,其中,长度20 km以上的特长铁路隧道12座,长约283 km。最后,对2022年新开通的重点项目大瑞铁路大理至保山段、郑万铁路湖北至重庆段、新成昆铁路峨眉至冕宁段隧道的概况及特点进行介绍,并总结其技术经验。经过郑万铁路隧道建设的实践探索,逐步形成了隧道建设全工序、全地质、全断面机械化设计施工成套技术;大瑞铁路大理至保山段及新成昆铁路特长隧道的修建,为复杂艰险山区长大隧道的修建积累了宝贵经验。这些项目的成功修建为铁路隧道信息化、机械化建设,进而实现隧道智能化建造,以及高铁在复杂艰险山区的修建奠定了基础,彰显了我国在特殊复杂地质条件下隧道修建技术水平的进步。

Statistical analysis is conducted on railway tunnel projects,high-speed railway tunnels,and extra-long railway tunnels in China by the end of 2022.It is shown that:(1)The operating mileage of railway has reached 155000 km in China.To be specific,17873 railway tunnels have been put into operation,with a total length of 21978 km.(2)The total length of high-speed railways that have been put into operation in China has exceeded 42000 km,and up to 4178 tunnels with a total length of 7032 km have been built for high-speed railways.Among them,105 are extra-long tunnels for high-speed railways with a length of more than 10 km each and a total length of about 1339 km.(3)259 extra-long railway tunnels have been put into operation in China,with a total length of about 3498 km.Among them,there are 12 extra-long railway tunnels over 20 km each,with a total length of about 283 km.Finally,the key projects newly put into operation in 2022,namely Dali-Baoshan section of Dali-Ruili railway,Hubei-Chongqing section of Zhengzhou-Wanzhou railway,and Emei-Mianning section of New Chengdu-Kunming railway,and their characteristics are briefly introduced.The construction technologies and experiences form a suit of full-process,full-geology,and full-face mechanized design and construction technology through application of the Zhengzhou-Wanzhou railway tunnel;the successful construction of the Dali-Baoshan section of the Dali-Ruili railway and extra-long New Chengdu-Kunming railway has laid a solid foundation for the construction of long-and-large tunnels located in complex mountainous areas.The successful construction of these projects has laid a good foundation for the information-based,mechanized,and intelligent construction of railway tunnels,laid a solid foundation for the construction of high-speed railways in complex and dangerous mountainous areas,and demonstrated the progress of tunnel construction technology in China under special and complex geological conditions.