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用机器切割岩石是国家煤炭局的一项非常重要的活动,每年大约完成500公里的巷道掘进。在岩石中掘进巷道,主要选择悬臂式掘进机和全断面巷道掘进机。这两种设备中,悬臂式掘进机比较便宜,通用性大,但它的一个主要问题是切割硬岩的能力受到限制。
Cutting the rock with machinery is a very important activity of the National Coal Board and completes about 500 kilometers of tunneling each year. Roadway driving in the rock, the main choice of cantilevered roadheader and full-face roadway boring machine. Among the two devices, cantilevered roadheaders are cheaper and more versatile, but one of its major problems is the limited ability to cut hard rock.