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一、前言赤平煤矿,以前为了防止瓦斯突出而采用了大口径钻机钻孔(口径250mm),由于采用的是气动钻孔机,孔深无法延长,掘进也得不到延深,而且在钻孔过程中时常出现咬卡现象,为了解决这一问题。试制了液压驱动大口径钻机,并于1984年开始进行现场适用性试验,到目前为止得到了一定的效果。本文报告了试制的液压驱动大口径钻机及其使用效果和其能力。
I. INTRODUCTION Chiping Coal Mine, previously used to prevent gas outburst with a large diameter drill drilling (diameter 250mm), due to the use of pneumatic drilling machine, hole depth can not be extended, the boring can not be extended, and drilling In the process of bite cards often appear in order to solve this problem. Trial production of hydraulic drive large diameter drill, and started in 1984 on-site applicability test, so far has been a certain effect. This article reports the trial production of hydraulically driven large-caliber drilling rigs and their effects and their capabilities.