拉萨至林芝铁路建设方案研究

Study on the Construction Scheme of Lasa-Linzhi Railway

拉萨至林芝铁路是川藏、滇藏铁路在西藏境内的共用段,是川藏、滇藏铁路的重要组成部分。依据运量预测结果及功能定位,修建一条客货共线的单线铁路即可满足运输需求,但由于西藏地区经济社会迅猛发展、运量预测的不确定性以及沿线旅游客流波动巨大的特殊性,远期川藏、滇藏建成后拉萨至林芝段运量可能出现较快增长。为应对可能出现的运量增长,为后期提高运输能力创造条件,本文结合经济运量、区域路网规划及沿线工程地质条件等因素,对拉林铁路的建设方案做了研究论证,建议采用16km站间距单线方案,并优化线路平纵断面,为后期需增建二线时引入中间站预留条件,这对于即将开展的川藏铁路中段以及其他类似项目的建设都具有一定的借鉴意义。

Lasa-Linzhi railway is a shared section of Sichuan-Tibet and Yunnan-Tibet railway,which is an important part of both railway lines.According to the results of traffic volume forecast and functional orientation,a single track railway can meet the transport needs,but due to the rapid economic and social development in Tibet,the uncertainty of traffic forecast and the huge fluctuations in tourism,there may be a quick growth between Lasa and Linzhi after the construction of Sichuan-Tibet and Yunnan-Tibet railway lines in the future.In order to cope with the possible increase of traffic volume and create conditions for the improvment of transport capacity,in combination with traffic volume,regional railway network planning and engineering geological conditions along the route,research demonstration on the construction plan of Lasa-Linzhi railway is performed in this paper,the single track railway scheme with 16 km distance between stations and line plane vertical section optimization are suggested to create conditions for introducing in intermediate station when adding the second track to existing railway line later,it has great referential significance to the middle section of Sichuan-Tibet railway and other similar projects.