On October 29, 2022, the construction of the section from Haidong west to Huangshengguan of Xining to Chengdu high-speed Railway was started with the participation of China Railway 11th Bureau, China Railway 12th Bureau, China Railway 14th Bureau, China Railway 18th Bureau, China Railway 19th Bureau and China Railway 25th Bureau, with the overall survey and design of the First Institute of Railway. It marks the start of the construction of the Xining to Chengdu section, an important part of the eight-vertical and eight-horizontal Lanzhou-Guangzhou high-speed rail channel in China's high-speed railway network.

West into high-speed rail

According to introducing, xining and chengdu high-speed railway across qinghai, gansu and sichuan provinces, the line from xining hub middle west station derivation, successively by the eastern city, Tibetan autonomous prefecture in qinghai province, gansu province, gannan Tibetan autonomous prefecture, aba Tibetan and qiang autonomous prefecture, sichuan province, after the closed wong shing with ChengLan railway in the construction practice, collinear introduce chengdu hub. There are 29 stations on the whole line, including 4 existing stations and 25 new stations.

The construction of the Haidongsi to Huangshengguan section of the main line length 502.5 kilometers, the design speed of 200 kilometers, Langmusi to Hongyuan section of the speed can reach 250 kilometers, the construction period of 7.5 years, the bridge and tunnel ratio of the whole line up to 80%. The route passes through basins, plateaus, river valleys, mountains and ten major faults. 60% of the route is located at an altitude of more than 3,000 meters. It also passes through four national nature reserves, one provincial nature reserve and two county nature reserves. The Ganzhou-Qinghai Long tunnel located in Huangnan Tibetan Autonomous Prefecture of Qinghai Province is the control project of the whole line. The East Qilian Mountain Tunnel located in Haidong City of Qinghai Province, the Zecha Tunnel in Gannan Tibetan Autonomous Prefecture of Gansu Province and the Baozuo Tunnel in Aba Tibetan and Qiang Autonomous Prefecture of Sichuan Province are the key and difficult projects of the whole line. On the one hand, China Railway Construction Co. built Bridges and increased the depth of foundation columns to solve the problems of bad geology and crossing swamps. On the other hand, it replaced roads with Bridges and regularly maintained vegetation to strengthen the avoidance and protection of nature reserves.

Xining to chengdu is China's high-speed railway eight vertical and eight horizontal high-speed rail network in lanzhou and xining to guangzhou LanGuang channel part, along with has opened an high-speed, high-speed rail, xi 'an to chengdu chengdu to guiyang high iron, chengdu and chongqing high iron and high iron, under construction in lanzhou to cooperation in chengdu to high-speed rail in lanzhou, chengdu to dazhou to wanzhou high-speed rail routes connecting, such as network status is very important.

After all opened, will speed up the western road network space problem, the more the great convenience of the masses of all nationalities along travel at the same time, strengthen the interaction with chengdu-chongqing urban agglomeration in lanzhou and xining urban agglomeration, to promote the silk road economic belt and the Yangtze river economic belt, interconnection, and to promote economic and social development, help the country along the revitalization, has the very vital significance. Editor/He Yuting