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煤矿井下钻机,定型生产的有:红旗(或太原)——150米手把钻机,镇江——100米手把钻机,TXV——75米油压钻机及最近常州试产的MYZ——50米多用钻机等,都是回转钻机。虽有不少优点,但仍不能解决井下钻探实际困难。如:煤巷超前探放水与瓦斯钻孔,一般是打浅眼,煤岩软,方位多变,上述钻机显得笨重;井下打平孔与斜孔多,出现塌孔,上述钻机不易处理;迂到硬岩石钻进效率低,成本高,事故多,进度慢。为解决钻机笨重问题一些厂矿革新了各种小型钻机。如枣庄矿务局陶庄矿利用电煤钻改成电钻式钻机;太原矿务局西山矿利用岩石电钻改成可调角度的电钻式钻机;淮南矿务局九龙岗矿把原来皮带传动的50米钻机改成链条齿轮传动的钻机等。这些小型钻机都具备各自的特点、能够适应井下生产条件和需要。但对建井施工钻探仍不太适用、
Coal Mine Drilling Rigs, Stereotypes: Hongqi (or Taiyuan) - 150m Handlebar Rig, Zhenjiang - 100m Handlebar Rig, TXV - 75m Hydraulic Rig and Most Recent Changzhou Pilot MYZ - 50m Multi-purpose drilling rig, etc., are rotary drilling rig. Although there are many advantages, it still can not solve the practical difficulties of underground drilling. Such as: coal tunnel ahead of the water and gas exploration drilling, drilling is generally shallow, soft coal, the direction of changeable, the drilling machine appears bulky; underground hole and inclined holes to play more hole collapsed, the rig is not easy to handle; Hard rock drilling to low efficiency, high cost, accidents and slow progress. In order to solve the problem of heavy drilling rig some factories to innovate a variety of small rigs. Such as the Zaozhuang Mining Bureau Tao Zhuang coal mine electric drills into drilling rigs; Taiyuan Mining Bureau Xishan mine drill rock drill into the adjustable angle drill; Huainan Mining Kowloon Gang mine the original belt drive 50 Meter drill into a chain gear drive drill and so on. These small rigs have their own characteristics, to adapt to underground production conditions and needs. However, drilling well construction is still not suitable,