国产大直径煤矿巷道硬岩掘进机下线

Group 1 - The "Dongping" large-diameter hard rock tunneling machine has been launched, featuring a drilling diameter of 7.64 meters [1] - The overall length of the machine is approximately 127 meters, with a total weight of around 1000 tons [1] - The machine was jointly developed by China Railway 23rd Bureau and China Railway Construction Heavy Industry [1] Group 2 - The "Dongping" machine will be utilized for the construction of the Dongping coal mine project in the Ordos City of Inner Mongolia [1]