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一、前言 煤矿井下巷道主要是用钻爆法掘进的,但从五十年代开始国外研制悬臂式掘进机以来,又对其进行了各种研究。而这种掘进机正在井下使用。在六十年代后期,悬臂式掘进机,不仅煤矿使用,而且在建设隧道等方面也广泛使用。悬臂式掘进机比钻爆法更为安全。但由于掘进硬岩受到限制,所以希望研制高效率硬岩掘进机。 另外,随着掘进机的普及,使用单位希望研制小型小断面的高效掘进机。
First, the preface Coal mine tunneling is mainly boring and blasting method of tunneling, but from the fifties began to develop the cantilever boring machine abroad, but also conducted a variety of research. This type of roadheader is being used underground. In the late 1960s, cantilevered roadheaders were used not only for coal mines but also for the construction of tunnels. Cantilever boring machine is more secure than drilling and blasting method. However, due to the limitation of tunneling hard rock, so I hope to develop high-efficiency hard rock roadheader. In addition, with the popularity of boring machines, the use of units hope to develop small and small sections of efficient boring machine.