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 Central media attention! The First TBM of China Railway Sunward Successfully Launched in the Longest High-Altitude Hydraulic Tunnel Project in China

Central media attention! The First TBM of China Railway Sunward Successfully Launched in the Longest High-Altitude Hydraulic Tunnel Project in China

On April 23rd, the first TBM of China Railway Sunward (full-section hard rock tunnel boring machine) "Dayu" was successfully launched in the longest high-altitude hydraulic tunnel in China--Yunnan Napahai Flood Control and Regulation Tunnel Project, marking the project's official entry into the TBM construction stage. The project has entered the TBM construction phase.
South-to-North Water Diversion Western Anyang City Water Transfer Project

South-to-North Water Diversion Western Anyang City Water Transfer Project

Western Anyang City Water Transfer Project Project Overview: The TBM construction section is dominated by muddy chart, limestone, amphibole porphyries and mudstone, with uniaxial saturated compressive strength of 8-80Mpa, 39.6% of Class III surrounding rock, 24.3% of Class IV surrounding rock and 36.1% of Class V surrounding rock, with medium rock strength, fault fracture zones, locally unstable holes and other unfavorable factors, as well as a long distance for the TBM to dig in, and a small diameter of the hole. The inlet of the tunnel project is located in the west of Xiabao village and the west side of the approach road of Zhonglian mine, the outlet of the tunnel is located in the southeast of Fanjiazhuang in Hengshui town, and the designed length of the tunnel TBM digging is 12.85km.
Yunnan Province Dianzhong Water Diversion Project

Yunnan Province Dianzhong Water Diversion Project

The main stratum is full-section gray rock, clay, gravelly soil, rounded gravel, powdery clay, carbonaceous clay, etc. The line is laid along Feng Yuan Road, tunneling length is 5009.69m, and the tunnel top depth is 20m-75m.
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