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1973年,在深入开展“工业学大庆”的群众运动中,我矿广大职工针对穿爆、运输两个薄弱环节的问题,成立了东风-200型潜孔钻机改造三结合攻关小组,经过半年多的努力,对钻机进行了16项较大的改革,使两台钻机能够投入生产。目前,在f=5～6的岩石中钻孔,台班效率为60米左右,最高可达130米。在批林批孔运动的推动下,攻关小组认真总结经验,1974年4月又完成了第三台潜孔钻机改进任务,进一步提高了机体稳定性,改善了工作条件,部分技术性能超过了设计指标,而钻机总重不超过20吨。
In 1973, in carrying out the mass movement of “Daqing in industry”, a large number of workers and minemen of mine set up the reform team of Dongfeng-200 DTH drilling rig to tackle the two weak links of blasting and transportation. After more than six months Efforts to carry out 16 major reforms of the drilling rig so that two rigs can be put into production. Currently, holes are drilled in f = 5-6 rocks with an efficiency of about 60 meters and a maximum of 130 meters. Under the motto of “Pilot Borehole Movement”, the research team conscientiously summed up the experience. In April 1974, the third DTH drilling rig was completed to improve the task, which further improved the stability of the airframe and improved the working conditions. Some of the technical performance surpassed the design Indicators, while the rig gross weight does not exceed 20 tons.