Overview of the whole line The estimated total investment of the new railway construction project from * * * to * * * is 2.07 billion yuan. The new railway construction project from * * * to * * * is located in Hulunbeier City, Inner Mongolia, and Xing'an League. The starting point is Yimin Town (Yimin Station, the terminal of Yimin Branch Line) within the jurisdiction of Ewenke Banner, Hulunbeier City. After crossing Huihe River in the south, the line passes through New Balhuzuo Banner and ends at Arshan North Station, Arshan City, Xing'an League. It connects Yimin Line and Bai'a Line, forming the western channel of northeast China into Beijing. It is a new railway in the medium and long-term road network planning. The construction period is 2 years. The total length of the line is about 185.335km. It is designed to open 10 stations and 1 line post in Ilshidong. The line is designed with 6 tunnels of 10081m long, of which the Habutgai Tunnel is 3564m long. 28 bridges l1053m. 156 culverts, 4002m long. In the preliminary design, the subgrade earthwork is 22.0637 million cubic meters, and the ballast is 669.303 million cubic meters. 1.2.2 Main design technical standard Railway grade: Grade II. Limit gradient: 6 ‰. The minimum curve radius is 800m. Traction type: internal combustion, reserved electrification conditions. Effective length of arrival departure track: 850m. Block type: relay semi-automatic block.