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巷道掘进过程中广泛采用锚杆支护方式,个别矿井每年使用锚杆支护的数量占60％以上。这种支护方式的优点是众所周知的。但是钻孔工艺和钻孔设备却是很笨重的,而且可靠性也很差。因此必须研制新型钻机,不仅重量要轻,而且功率须加大一倍。另外,根据工作条件要求,功率变化范围也要大些。 水力采煤生产联合公司的水力机械厂专用设备设计室和莫斯科矿业学院的工作人员研制出一种较为先进的钻孔设备。通过科学
Bolting is widely adopted in roadway excavation process. The number of bolt supports used in individual mines accounts for more than 60% of the total. The advantages of this type of support are well known. But the drilling process and drilling equipment is very heavy, and the reliability is poor. Therefore, we must develop a new type of drilling rig, not only lighter in weight, but also to double the power. In addition, according to the working conditions, the power range should be larger. Hydraulic coal production joint company’s hydraulic machinery plant dedicated equipment design studio and the Moscow Mining Institute staff developed a more advanced drilling equipment. Through science