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本文介绍捷克利矿应用小直径炮眼的经验,文中着重介绍了提高小直径钎杆强度和改进纤头形状的经验。在坚固岩石中掘进水平巷道时,工作面每昼夜的进尺平均为1.3—1.6米。为提高掘进速度,必须增加单位时间的掘进循环数。现代装载和运输采掘物的技术(装岩机与电机车运输相配合)能保证在2.5—3.0小时内清除碎石。而在坚固岩石中凿岩爆破综合作业的延续时间常常达到3.0—3.5小时,因此在一个六小时的工班时间内往往不能完成一个完
This paper introduces the experience of the Czech Klee application of small diameter blasthole. The article emphatically introduces the experience of improving the strength of the small diameter drill rod and improving the shape of the tip. When digging a horizontal roadway in a solid rock, the footage per day and night on the face is 1.3-1.6 meters on average. In order to improve the speed of driving, we must increase the number of driving cycles per unit time. The modern technology for loading and transporting extractives (rock loader fitted with motorized car transport) ensures that the gravel is removed within 2.5-3.0 hours. In solid rock drilling and blasting integrated operations often extend the duration of 3.0-3.5 hours, so in a six-hour working hours are often unable to complete a