[Shenjiang No. 1 participated in the construction of the deepest submarine tunnel] On August 23, China's self-developed subsea tunnel shield machine rolled off the assembly line in Changsha, Hunan. The equipment shield machine has an excavation diameter of 13.42 meters, a total length of 130 meters, and a total weight of 3,800 tons. It will participate in the construction of China's deepest submarine tunnel-the Zhujiangkou Tunnel of the Shenzhen-Jiangmen Railway. The Pearl River Mouth Tunnel is a key control project of the Deep River Railway. "Shenjiang No. 1" crosses the section with a total length of 3590 meters. The entire line is tunneled downhill for a long distance and passes through the Pearl River estuary. The engineering geological conditions are extremely complicated. Editor/Xu Shengpeng

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• 2026.04.21 16:57
• [The 10000 ton rotating beam of the Cross Ningxi Railway has successfully rotated]
• On April 21, 2026, the 19000 ton rotating beam of the Hewu High speed Railway over the Ningxi Railway completed an "aerial turn" and successfully crossed the Ningxi Railway. The weight of the beam is 19157.8 tons, and the rotation accuracy requirement is that the error should not exceed 10 millimeters. Due to its proximity to busy main roads, the construction team relies on an intelligent monitoring platform to monitor posture, stress, and wind speed in real-time, and cooperates with a synchronous traction system to achieve precise counterclockwise rotation and positioning. The successful transformation marks significant progress in the project.Editor/Cheng Liting

• 2026.04.21 16:56
• [The China Laos 500 kV interconnection project has been officially put into operation]
• The China Laos 500 kV interconnection project was officially put into operation on the 20th, marking a significant improvement in the power interconnection capacity between the two countries. The total length of the project is 177.5 kilometers, forming a bidirectional mutual aid capacity of 1.5 million kilowatts, and an average annual transmission of 3 billion kilowatt hours of clean electricity.Editor/Cheng Liting