城西南排工程迎来关键节点 “先行号”盾构机成功始发

Core Points - The successful launch of the first shield machine "Xianxing" marks the commencement of the tunneling phase for the Chengxi South Drainage Project, a significant water conservancy initiative in Hangzhou [1] - The shield machine is approximately 90 meters long, weighs about 2500 tons, and has a diameter of 12.1 meters, designed to excavate a 5-kilometer underground tunnel [1] - The project aims to enhance flood control standards in the Chengxi area from a 20-year to a 50-year flood occurrence rate [2] Group 1 - The Chengxi South Drainage Project is crucial for addressing flood drainage deficiencies in the Chengxi region and ensuring water safety for the Hangzhou Chengxi Science and Technology Corridor [2] - The project is currently advancing across various construction segments, including vertical shaft excavation and tunnel lining works [2] - The city water service group has implemented advanced calibration and management systems to ensure the precision and efficiency of the shield machine's operation [1]