【Ten Years of Rapid Development in Chemical Engineering Equipment】The Qianjiang-Shaoguan Gas Pipeline Project: China’s first 3-meter-class shield tunneling operation across the Yangtze River from 2013 to 2020
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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. With more people involved, the discussions become more lively, and everything becomes even better with your participation. There are prizes for those who leave replies – feel free to discuss! -------------------------------------------------- On the morning of December 9, 2020, as the shield machine named “Xinqi Yong’an” arrived at the reception shaft located in Bailuo Town, Jianli City, Hubei Province, the Yangtze River shield tunnel built by China Railway 14th Bureau was successfully completed. This marked a significant breakthrough in the construction of the Qianjiang–Shaoguan gas pipeline project. The Yangtze River shield tunnel of the Qianjiang–Shaoguan gas pipeline project is 3,481 meters in length. The shield machine started tunneling from the starting shaft on the south bank in Yunxi District, Yueyang City, Hunan Province, and ended at the receiving shaft on the north bank in Bailuo Town, Jianli City, Hubei Province; it represents the most critical section of the entire pipeline project.
The inner diameter of the segment is 3.08 meters, making it the longest 3-meter-class shield tunnel ever constructed across the Yangtze River. The strata consist of fully weathered, strongly weathered, moderately weathered, and slightly weathered argillaceous and sandy slate; there are 9 fracture zones and 3 large compressional fracture zones, resulting in a relatively complex geological structure.
The Qianjiang-Shaoguan gas pipeline project is invested in, constructed, and managed by **Pipeline Network Group Xinjiang Coal-to-Natural Gas Export Pipeline Co., Ltd.** The pipeline is 830 kilometers long, starting in Qianjiang, Hubei, and ending in Shaoguan, Guangdong. It passes through Jingzhou in Hubei, as well as Yueyang, Changsha, Zhuzhou, Hengyang, and Chenzhou in Hunan. Once completed and put into operation, the project will be able to supply 6 billion cubic meters of gas per year, which will help alleviate the pressure on natural gas supply and demand in regions such as Hunan and Guangdong, and promote the use of clean energy as well as the development of ecological civilization in the areas along its route.
The usability of this project