On August 1, Longquan inverted siphon construction site of the Kunming section of the Dianzhong water diversion project construction 4 standard, with the start command, the shield body slowly moved forward, Longxiang (China Railway Shanhe 029) No. soil-pressure balanced shield successfully started, and its start also marks that the Dianzhong water diversion project has entered a new stage.

　　Longquan Inverted Siphon Tunnel, the fourth project of Kunming section of Dianzhong Water Diversion Project, is the first project using soil-pressure-balanced shield tunneling machine in the whole line. The project is characterized by “long distance, large depth and high water pressure”. Shield machine No. 029 of China Railway Shanhe is equipped with the most cutting-edge technology in the industry, which ensures that the shield machine can efficiently overcome a series of complex geological problems such as long distance, large burial depth and high water pressure in the construction process.

　　At present, the shield machine produced by China Railway Shanhe has been widely used in subway and comprehensive pipeline corridor projects in Changsha, Chengdu, Kunming, Guangzhou, Shenzhen and other places. The successful launching of Shield Machine No. 029 of China Railway Shanhe marks that the company's shield machine has entered the new field of water conservancy and hydropower construction, and fully demonstrates the ideal of China Railway Shanhe people to serve the country with equipment.