首页>
外国专利>
Method and a machine for advancing an underground face of a geological formation
Method and a machine for advancing an underground face of a geological formation
展开▼
机译:用于推进地质构造的地下工作面的方法和机器
展开▼
页面导航
摘要
著录项
相似文献
摘要
A method for driving tunnels in rounds is disclosed in which, after each round, the tunnel is left with an inclined transition to the floor. In the subsequent round, a cut is opened up in the transition towards the floor and the tunnel face is then stepwise drilled and blasted in cycles until the roof is reached and the round is completed. A machine for carrying out the method is disclosed which comprises a plurality of drill- and-blast units that are mounted on a frame that is pivotable about a transverse horizontal axis.
展开▼