PICTURE OF THE MONTH
The 34.5 km Gaoligong mountain tunnel in China is currently under construction. It will be the longest mountain tunnel in Asia once it is finished. Completion is scheduled for 2025. The tunnel is located in the Himalayan belt. It will go through 19 fault zones and has a maximum overburden 1300 m. The CREG Gripper TBM in the picture with a diameter of 9.03 m is driving with a maximum speed of 37 m per day. It is one of two CREG machines involved in the project and has been excavating the tunnel since February 2018.