Construction site: 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.
Equipment type: 1 set of CSTT4330E double shield TBM with excavation diameter of 4330mm, main drive power of 1400kW.