How to build a railway?

1. Plan the route first, demonstrate the feasibility and necessity (including the examination and approval procedures stipulated by the state), explore, design, open tender for projects approved by the National Development and Reform Commission, and the commencement ceremony may have been carried out some auspicious day before this.

2. When entering the construction stage, land acquisition (control projects, such as long tunnels, bridges and large-scale municipal projects, have almost started. ), subgrade, tunnel entrance, pier erection (at the same time, start post-station works, such as station building, traction power supply, communication signal and other related works), and then pave (i.e. bridge, track-laying row, etc.). ) has been started. If ballast ballast bed is used, ballast will follow up at this time.

3. There are too many kinds of materials for railway maintenance. Such as steel, wood, building materials, electrical materials, geotechnical materials, waterproof materials, hardware and so on. At present, the procurement generally adopts the way of bidding, and the winning bidder supplies the goods.

4. The amount of earthwork is the largest. Sleepers (cement products are mostly used now), telephone poles, communication equipment, communication cables, lighting equipment, light bulbs (including accessories), signal devices, plastic (iron) pipes, computer control systems, railway line signs, protective nets and cement columns. If it is a high-speed railway, there will be a large number of workshops and stations, followed by water supply system materials and rails.