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一、TYZ—500天井钻机试验成功最近,由长沙矿山研究院、下垄钨矿、瑶岗仙钨矿、水口山铅锌矿共同研制的三台TYZ—500型天井钻机在矿山的工业试验中采用NJM—4FB内曲轴油马达配套使用,解决了油泵长期不过关的问题,现已总共钻孔11096.3米,其中扩孔500毫米直径的1858.4米。该钻机的技术性能是:超前孔(由上向下)直径为216毫米;扩孔(由下向上)直径为500毫米;钻进深度120米;钻孔角度为45～90°,孔的偏斜率一般在1％以内。
First, the TYZ-500 well drilling rig successfully tested Recently, the Changsha Mining Research Institute, under the Long Tungsten Mine, Yao Gang cents tungsten ore, lead mine developed Shuikoushan three TYZ-500-type drilling rig in the mine in industrial trials The use of NJM-4FB crankshaft oil motor supporting the use of the pump to solve the problem of long-term customs clearance has been a total drilling 11096.3 meters, of which reaming diameter of 1858.4 meters 500 mm. The technical performance of the drilling rig is as follows: the advance hole (from top to bottom) has a diameter of 216 mm; the reaming (from bottom to top) has a diameter of 500 mm; the drilling depth is 120 meters; the drilling angle is 45 to 90 °; The slope is generally within 1%.