China's wisdom – Chengdu Guiyang high speed railway

Chengdu Guiyang high speed railway, also known as Chengdu Guiyang passenger dedicated line, is a high-speed railway connecting Chengdu City, Sichuan Province and Guiyang City, Guizhou Province. It is an important part of "Lanzhou (West) Guangzhou channel", one of the "eight vertical and eight horizontal" high-speed railway main channels in the "medium and long term railway network planning". On December 16, 2019, the section from Yibin to Guiyang was put into operation, marking the completion and opening of the whole Chengdu Guiyang high speed railway. A 6031 a 6031 Chengdu Guiyang high speed railway is 648 km long from Chengdu east railway station to Guiyang east railway station. There are 24 stations and the designed maximum speed is 250 km / h. The

crh3a EMU is the main operating model of Chengdu Guiyang high speed railway after its opening in Sichuan. Crh3a EMU adopts 8-car formation, with the maximum operating speed of 250km / h, body height of 3.9m and width of 3.3m, middle carriage length of about 25m, and 613 people in the whole train. Compared with the conventional EMU, the crh3a EMU has a wider window design and better sight seeing. The carriages have also been widened, with more space for passengers to feel more comfortable. The air outlet of air curtain ventilation system is evenly distributed on the top of the car. There is an independent ventilation system for hot and cold air. The air is more comfortable from top to bottom and the hot air is more comfortable from bottom to top. In addition, the traction force of crh3a EMU is greater than that of ordinary EMU. Under the condition of 613 people with fixed capacity and full load, it can ensure that the EMU can stop and start without running on the 20 ‰ ramp.

Chengdu Guiyang high speed railway has developed and verified China's high speed railway technology in a very special mountain scene, and many world-class innovations have emerged: laying CRTs Ⅲ slab ballastless track with completely independent intellectual property rights in China; changing the way of underground river, backfilling the karst cave, and crossing the bridge and beam have solved the problem of Yujing mountain tunnel; and it has built the world's largest medium span Yachi River double track super major bridge, a steel-concrete combined basket arch bridge, has built the first Jinshajiang public rail dual purpose Super Major Bridge with separate bridge deck in China, and xixihe bridge, the first concrete-filled steel tube swivel arch bridge, has realized two-way air swivel. The opening of the full line of

Chengdu Guiyang high-speed railway makes China once again walk in the front of the world. China's high-speed railway has shocked the whole country and the world. China's wisdom benefits the people and facilitates the people. Let's praise the railway staff and Chengdu Guiyang high speed railway! &Nbsp; & nbsp; (Xu Wei)