【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
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Witnessing the decade-long rapid development of chemical processing equipment, I admire 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 you here. There are prizes for those who leave replies; feel free to discuss! ------------------------------------------------- On October 18, 2004, the Chenglingji Yangtze River Tunnel, an important part of the project to transport gas from Sichuan to eastern China and often referred to as the \"longest tunnel on the Yangtze River,\" was officially completed. Thus, China’s key infrastructure project – the first phase of the Sichuan Gas Transmission to the East project – has been fully completed. The Yangtze River crossing tunnel at Chenglingji is located four kilometers downstream of Chenglingji; the north bank belongs to Jianli City in Hubei Province, while the south bank belongs to Yueyang City in Hunan Province. With a total length of 2,756 meters, this tunnel is the fourth cross-river tunnel in the Sichuan Gas to East China project, and it is also the longest tunnel across the Yangtze River to date. Construction on this tunnel began in January 2003, and after one year and nine months of hard work by the builders, it was finally completed. Experts say that the completion of the Chenglingji Yangtze River tunnel, as an important part of the Chongwu gas pipeline project for transporting gas from Sichuan to the east, has opened the way for natural gas from Sichuan to reach Hunan via pipelines. As planned, Hunan Province will start using natural gas from Sichuan in July 2005. It is reported that the Zhongwu gas pipeline project of the \"Sichuan Gas to East China\" initiative is a major project aimed at transporting natural gas resources from Sichuan Province to Hubei and Hunan provinces. The main line of this project starts in Zhongxian County, Chongqing Municipality in the west and reaches Wuhan City, Hubei Province in the east, with a total length of 718 kilometers. The entire pipeline project involves an investment of over 5 billion RMB, with an annual designed gas transmission capacity of 3 billion cubic meters. (End)
On July 18, 2004, the shield tunneling work for the Chenglingji Yangtze River crossing section of the **West-East Gas Pipeline Zhong (Xian) Wu (Han) gas pipeline main line project, which was constructed by China Railway Tunnel Group Company under China Railway Engineering Corporation and carried out by the Second Construction Co., Ltd., was successfully completed. The Chenglingji Yangtze River crossing tunnel is 2,908 meters in length; of this, 1,045 meters were constructed using the drill-and-blast method and 1,711 meters using the shield tunneling method. It passes through fault zones on multiple occasions, and the rock mass features well-developed joints and cracks, making construction highly challenging. Since the project began, the project team of China Railway Tunnel Group has organized work meticulously, implemented strict management, followed standardized procedures, and carried out construction in a scientific manner. It overcame challenges such as high water pressure during construction and fractured geological strata, passed through the main embankment of the Yangtze River as well as 22 fault lines, and set domestic records for slurry shield tunneling with 22 meters of progress per day and 369 meters per month, thus completing the excavation task of 1,711 meters ahead of the originally planned deadline. Due to its excellent performance, the owner assigned an additional 300 meters of tunneling work using shield machines. The project team went all out and completed the entire tunneling task efficiently, earning high praise from the owner and establishing a good reputation in the field of shield machine construction in China.
【Ten Years of Great Development in Chemical Engineering Equipment】The 1,638.6-meter Yangtze River tunneling project for the Sichuan Gas to East China pipeline along the Weijiang Route from 2017 to 2022 https://bbs.hcbbs.com/thread-3587488-1-1.html (Source: Haichuan Network – Chemical Industry Forum)
【History of Haichuan Pipelines】The first tunnel to cross the Yangtze River using the drill-and-blast method https://bbs.hcbbs.com/thread-3072534-1-1.html (Source: Haichuan Network – Transforming the Flow of the River)
Witnessing the Ten-Year Rapid Development of Chemical Equipment: Praising the Prosperity and Strength of Modern China