There are no railways in Tianshui and Longnan in Gansu Province. The journey time is long and the traffic is very inconvenient. Recently, it is understood that the Tianlong Railway has made new progress and plans to start construction in 2020.

The newly-built Tianshui-Longnan line leads from Sanyangchuan Station of Longhai Railway, passes through the middle beam to the South Long Tunnel (L-12.86km), crosses the Borneo River, Lianhuo Expressway (G30), National highway G316 to the estuary of Nangou River, along the foot slope of Nangou River, through the suburb of Zaojiao with a length of 10.60km through the watershed of Weihe River and Jialing River to Tianshui Town. G316 goes south, passes Jiangluo and Niyang, then turns southwest to the southwest side of Chengxian County (southeast of Shaoxa Town). After exiting Chengxian Station, the line continues to the southwest, passing the Xiaochuanyi Bridge (L-636.1m , H-100m) across the West Hanshui to Pingluo, then the foot slope along the Pingluo River along the left bank of the Pingluo River is dominated by bridges and tunnels, parallel to the Chengwu Expressway, passing Wangguan and Foya and crossing the Western Han with a 16.00km tunnel Watershed and Bailongjiang Watershed——Micangshan to Anhua Station. After exiting the station, the route runs down the Beiyu River to the southwestern foot slope. Through Majie, the 7.33km tunnel passes through the watershed between Beiyu River and Gouba River to Liangshui Station. After exiting the station, it will be along the Gouba River and the west end will be cleared and introduced into Longnan West Station.

The project runs through a length of 269.74 kilometers, with an estimated total investment of about 24 billion yuan. The construction period is 5 years. It is designed according to National Railway Class I, single line 160km / h, and electric traction standards. 58.98km / 73 new bridges were built on the whole line, including 48.22km / 33 super bridges and 10.76km / 40 large and medium bridges; 150.06km / 56 tunnels were built, of which 0.74km / 4 were tunnels longer than 10km; the total length of the bridge and tunnel 209.04km, accounting for 77.50% of the length of the line building. There are 21 stations and 1 line station in the whole line recently.

The Tianlong Railway's preliminary design routes, stations, environmental protection and other related conditions in Chengxian County have been fully discussed by various relevant departments from various aspects such as land acquisition, site selection, operation management, and economic development. Constructive advice. A consensus was reached on the planning and design route and station location plan of the Chengxian section of the Tianlong Railway proposed by the planning and design unit, and a consensus was initially formed.

The construction of the Tianlong Railway will solve the problem of inconvenient transportation for the people of Longnan and Tianshui cities and end the history of the two cities that have not been connected to the railway for many years. After it is completed and opened to traffic, it will have a far-reaching impact on the construction of a new coal transportation route from north to south, and to promote the poverty alleviation in contiguous areas such as the old revolutionary areas such as Longdongnan and Northwest Sichuan, Liupan Mountain, and Qinba Mountainous Area. Editor / Peng Xue