en.Wedoany.com Reported - From January to May this year, China Railway Chengdu Bureau Group Co., Ltd. completed a fixed asset investment of 10.78 billion yuan in railway projects in Chongqing, achieving breakthrough progress in key project construction and laying a foundation for the steady growth of Chongqing's economy. Currently, multiple railway projects in Chongqing are accelerating, including the Chongqing-Wanzhou High-Speed Railway, Yichang-Fuling High-Speed Railway, Chongqing-Kunming High-Speed Railway, Xi'an-Chongqing High-Speed Railway, and the Chengdu-Chongqing Middle Line High-Speed Railway, all of which have achieved phased results at various construction sites.
The Chongqing-Wanzhou High-Speed Railway is an important part of China's "Eight Vertical and Eight Horizontal" high-speed rail network, specifically the Baotou (Yinchuan)-Hainan and Beijing-Kunming corridors. According to Zhang Xuewen, Deputy Project Manager of China Railway Construction Bridge Engineering Bureau, at the Caijiagou Double-Track Extra-Large Bridge construction site, the team is conducting post-rain special inspections after the flood season, implementing key process re-inspections such as hazardous rock remediation and slope protection. Currently, subgrade, bridge, and tunnel works are largely completed, while station buildings and "four-electric" projects are progressing on schedule.
On May 31, the New Fangdoushan Tunnel, a key and challenging control project of the Yichang-Fuling High-Speed Railway, achieved phased progress, with a cumulative excavation of 2,600 meters (including auxiliary tunnels). The tunnel, with a total length of 10,660 meters, features complex geological conditions and must overcome challenges such as high gas levels and large deformations in soft rock. According to Qi Wenxiang, On-Site Project Manager of China Railway 11th Bureau, the project department is equipped with intelligent equipment such as full-computer rock drilling jumbos, arch-anchor jumbos, and wet shotcrete manipulators, enabling full-process mechanized and efficient operations. Once completed, the Yichang-Fuling High-Speed Railway will open a new 350 km/h high-speed rail corridor connecting Sichuan and Chongqing with Central China.
On May 31, the track-laying work for the Yibin to Yannan South section of the Chongqing-Kunming High-Speed Railway was successfully completed. According to Deng Lei, Project Manager of China Railway 8th Bureau, the main works for subgrade, bridges, tunnels, and ballastless track have been fully completed along the line, with final auxiliary works and defect rectification being accelerated. Upon completion, the travel time between Chongqing and Kunming will be significantly reduced.
As of the end of May, the Hechuan East Beam Yard of the Xi'an-Chongqing High-Speed Railway, undertaken by China Railway 14th Bureau, had completed the prefabrication of 325 box girders and erected 304. It is planned to complete the erection of 21 box girders for the Hechuan East Station Extra-Large Bridge by the end of June, marking the completion of all girder erection work for the Chongqing section of the Xi'an-Chongqing High-Speed Railway. Preparations for the pre-acceptance of ballastless track construction are currently underway. Upon completion, the project will further improve the railway network structure in the central and western regions.
At the ballastless track construction site of the Dazu section of the Chengdu-Chongqing Middle Line High-Speed Railway, the base slab has been completed for 16,133 single-track meters (86%), and the track bed slab for 24,181 single-track meters (55%). The construction site is fully utilizing intelligent equipment and digital fine-tuning systems to achieve millimeter-level precision control over key processes such as base slab pouring and track bed adjustment.
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