Rapid construction of mining ventilation shaft with raise boring machine for nuclear mine 天井钻机快速施工核矿开采通风井
To bore ( a shaft ) with a trepan. Vibration Signal Applied to Analyze Reaming Performances of Raise Boring Machine 钻用钻井机钻(矿井)采用振动信号分析反井钻机扩孔钻进工况
The sequence of excavation for the shaft of diversion system at Pushihe storage power station is to excavate the pioneer well used by back well boring machine, then by hand air drill to expand it. 蒲石河抽水蓄能电站引水系统中的竖井开挖,拟采用反井钻机进行导井开挖,人工手风钻钻孔扩挖的方式施工。