[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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• 2026.03.27 18:11
• [The Yunan High Voltage Expansion Project has started construction]
• On March 25, 2026, the first ultra-high voltage project of Henan Power Grid during the 15th Five Year Plan period, the main transformer expansion project of the 1000 kV Yunan Te High Voltage Substation, officially began construction. After the completion of the project, the power supply capacity can be increased by 50%, which will further enhance the safe operation of the power grid and the guarantee of power supply, and help promote the green and low-carbon transformation of energy.Editor/Gong Ziwei

• 2026.03.27 18:02
• [500 kV Wuhu GIL pipe gallery project starts construction]
• On the morning of March 26, 2026, the "Wanmei Electric Power" shield machine of the 500 kV Wuhu GIL pipe gallery project was excavated in Nicha Town, Wuwei City, and the project officially started. This project provides support for the Yangtze River transmission channel of the Gansu Zhejiang ± 800 kV high-voltage project, relocating the original 500 kV line to the ground and reserving two 500 kV cross river channels. The project is the first 500 kV transmission pipeline crossing the Yangtze River in China, with a shield section length of 3554.4 meters and a tunnel outer diameter of 11.6 meters. It is equipped with customized large-diameter shield machines.Editor/Gong Ziwei