China Railway Engineering Equipment Group Co - Baicheng Tunnel of Mengxi-Huazhong Coal Transportation Railway, China

Baicheng Tunnel of Mengxi-Huazhong Coal Transportation Railw

Introduction： CREG Horseshoe-shaped machine will bore a 3,345m tunnel, the West Inner Mongolia-Central China Railway, with maximum overburden of 81.05m. The machine started boring on December 29th 2016. On November 7th, 2018, the Baicheng Tunnel Project of Menghua Railway was awarded the “ITA Technical Project Innovation of the Year 2018 ”.

Project Facts

Product Facts

The construction method with such Horseshoe-shaped TBM is used for the first time to bore tunnels of roads and railways in mountain area. The cutterhead is 10.95m high and 11.90m wide. The Horseshoe-shaped TBM differs from traditional circular machines not only in section but also in construction method. When the machine is applied to soft soil tunnelling through mountains, the tunnel space utilization will be increased by 20% to 30% in comparison to circular cutting. The Horseshoe-shaped machine will bore a 3,345m tunnel with maximum overburden of 81.05m. The machine started boring on December 29th 2016.

On November 7th, 2018, the Baicheng Tunnel Project of Menghua Railway was awarded the “ITA Technical Project Innovation of the Year 2018 ”.

Machine Specification

TBM Diameter: 11,900*10,950 mm

Total Thrust: Max. 139,480 kN

Breakout torque: 2940 kNm

Maximum Torque: Max. 3,044 kNm
Cutterhead Drive: Electric, variable speed

Cutterhead Power: 1,980 kW

Cutterhead Rotation: 0-1.08 rpm

Geological Features

New loess, loess, sand, silt.