en.Wedoany.com Reported - Recently, as the "Electrification Pioneer" shield machine successfully emerged at Xiangyun Street Station of Phase I of Shijiazhuang Metro Line 4 in Hebei, China, the section between Xiangyun Street Station and New Passenger Terminal Station (hereinafter referred to as the Xiangxin Section) achieved full double-line breakthrough. During construction, this section traversed 21 operational railway tracks, including high-speed rail and conventional rail main lines, marking a first in the field of domestic metro construction.
The shield construction of the Xiangxin Section, undertaken by the Railway Engineering Company of China Railway Electrification Bureau, is the core controlling project of the entire line and the most challenging critical point in terms of construction difficulty. The section passes beneath important busy trunk railways such as the Beijing-Guangzhou High-Speed Railway, Beijing-Guangzhou Conventional Railway, and Shijiazhuang-Taiyuan Passenger Dedicated Line, spanning a crossing range of 270 meters with over 600 daily train passages.
Sun Guopeng, Project Manager of Phase I of Shijiazhuang Metro Line 4 under China Railway Electrification Bureau, introduced that the project team reinforced the railway subgrade on the ground surface through grouting to ensure the line's robustness and reliability. During the shield tunneling process, methods such as synchronous grouting and secondary grouting were employed to provide flexible support for the tunnel, thereby controlling railway settlement and ensuring operational safety.
Zhao Xiongqiang, Deputy Manager of the Shijiazhuang Branch of Beijing Railway Engineering Management Company under China Railway Beijing Group, stated that this project continuously traversed 21 operational railway tracks, including high-speed rail, conventional rail, and EMU lines, with a crossing length of 270 meters. It is the first key project in Hebei Province to simultaneously pass beneath multiple national-level busy trunk lines.
Wang Long, Deputy General Manager of the Rail Transit Group under Shijiazhuang Transportation Investment Group, indicated that the project successfully overcame the challenge of high-precision settlement control during shield tunneling beneath dense operational railways, accumulating practical experience for crossing projects under similar high-risk standards.
Phase I of Shijiazhuang Metro Line 4 has a total line length of approximately 22.43 kilometers, with 20 stations, starting from Yucun South Road Station and ending at Dongyuan East Road Station. Upon completion, it will form a loop with Phase I of Line 5. Among the 20 stations, 19 have completed main structure topping-out, and 16 out of 20 sections have achieved double-line breakthrough. Track-laying work is fully underway, and the line is expected to be completed and open to traffic by 2027.
This article is compiled by Wedoany. All AI citations must indicate the source as "Wedoany". If there is any infringement or other issues, please notify us promptly, and we will modify or delete it accordingly. Email: news@wedoany.com
