The kerf is the outside boundary of the tunnel wall that a boringmachine gouges out as it bores through the ground or rock.
切口在隧道壁边界的外面,隧道壁是由钻机在钻透土地或岩石时挖出的。
2
A full face rock tunnel boringmachine was highly sensitive to geologic situation.
全断面岩石掘进机施工对地质地层状况非常敏感。
3
Being a crucial factor in influencing the performance of Full Face Rock Tunnel BoringMachine (TBM), the cutterhead design is one of the key issues of TBM.