【Ten Years of Rapid Development in Chemical Engineering Equipment】The 1,638.6-meter Yangtze River tunneling project for the Sichuan Gas to East China pipeline on the Weijiang route from 2017 to 2022
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Witnessing the decade-long rapid development of chemical processing equipment, I praise the prosperity and strength of modern China. This is just a modest contribution; I invite everyone to participate more actively in the forum discussions – the more people involved, the more lively it becomes. HaiChuan becomes even better with your presence. There are prizes for those who leave replies; feel free to discuss! ------------------------------------------------- On September 22, 2022, the Yangtze River tunnel section of the Weijiang Line, a key project under the \"West-to-East Gas Transmission\" initiative and constructed by China Railway Tunnel Group, was successfully completed after 307 days of hard work.
【Ten Years of Rapid Development in Chemical Engineering Equipment】7,460 meters: the highest length of directional drilling for natural gas pipeline crossings on the Chinese mainland from 2007 to 2019. https://bbs.hcbbs.com/thread-3587449-1-1.html (Source: Haichuan Network – Chemical Industry News)
The Weiyuan and Luzhou shale gas transmission mainline project serves as a transmission line that connects the three major shale gas production areas of Weiyuan, Luzhou, and western Chongqing, undertaking the task of transporting shale gas from these areas. The gathering and transportation main lines are connected to the key pipeline networks in Sichuan and Chongqing, as well as the Zhonggui Pipeline and the newly planned pipelines leading out of Sichuan, thereby ensuring the ability to transport excess gas out of the region in the future. Once completed, it will improve the backbone pipeline network in Sichuan and Chongqing, facilitating the allocation of resources within that network. Among them, the Yangtze River tunnel project is the key project along the entire route; the tunnel is 1,638.6 meters long and is located in Jiangjin District, Chongqing, spanning across both the Yangtze River and the Tuo River. The design adopts a penetration method of \"incline shaft – horizontal adit – inclined shaft\", with a maximum burial depth of about 101 meters and a minimum burial depth in the riverbed section of about 70 meters; the construction is carried out using the drill-and-blast method.
The Yangtze River tunneling project involves high risks, with various significant hazards such as small cross-sections, passing under the Yangtze River, rail transportation on steep slopes, blasting operations, and passing under existing railways, all of which pose new challenges to project management and construction organization. China Railway Tunnel Group continuously innovates its management and optimizes its organization to ensure the safe, efficient, and high-quality progress of projects. After the completion of tunneling in the Yangtze River Tunnel, the secondary lining of the tunnel is scheduled to be finished by the end of October, thereby completing the entire main structure of the tunnel. “The completion of the Yangtze River tunnel section of the \"Sichuan Gas to the East\" Weijiang pipeline marks the seventh successful crossing of the main course of the Yangtze River by China Railway Tunnel Group. Prior to this, China Railway Tunnel Group had crossed the Yangtze River on many occasions, including 6 times across its main channel and 11 times across its tributaries.
【Ten Years of Great Development in Chemical Engineering Equipment】The 2,908-meter-long Chenglingji Yangtze River Tunnel, the longest tunnel on the Yangtze River, was completed between 1972 and 2004. https://bbs.hcbbs.com/thread-3587505-1-1.html (Source: Haichuan Network – Chemical Industry News)
【History of Haichuan Pipelines】The first tunnel to cross the Yangtze River built using the drill-and-blast method https://bbs.hcbbs.com/thread-3072534-1-1.html (Source: Haichuan Network – Transforming the Flow of the River)