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一、国外岩巷掘进机械化的发展情况 60年代末,国外不少国家在研制和发展全断面岩巷掘进机。这种掘进方法,虽然较为先进,但由于掘进机效能受煤矿多方面因素的影响,且造价高,故只在少数国家中试用,因此岩巷掘进在今后相当长的时期内仍将以钻爆法为主。70年代国外发展冲击旋转式液压凿岩机,这种新型凿岩机的动力消耗为同级风动凿
First, the development of rock tunnel mechanization abroad Late 60s, many foreign countries in the development and development of full-face rock tunnel boring machine. This method of excavation, though relatively advanced, has been tried out in only a few countries due to the various factors that affect the performance of roadheaders, and the cost is high. Therefore, excavation of rock tunnels will continue for a long time to come. Law-based. 70’s foreign development impact rotary hydraulic rock drill, the power consumption of this new rock drill for the same level of pneumatic chisel