【摘要】 目前,岩巷掘进的主要作业方式为炮掘,炮掘的循环进尺决定着掘进速度,因此,中深孔爆破的应用在岩巷掘进中日益广泛。中深孔爆破技术的实施受岩石条件的限制,在硬岩巷道中,炸药消耗量大、容易出现"抽炮"现象、炮眼利用率低,针对硬岩巷道中深孔爆破现场问题,对硬岩巷道中深孔爆破技术进行研究,通过改变掏槽方式、爆破参数、装药结构来改善爆破效果。本文以陈四楼煤矿为例,通过现场试验,对中深孔爆破技术在硬岩中的应用展开了研究。更多还原

【Abstract】 Currently, rock heading for the main practices Excavating, Excavating circulating footage determines the driving speed, therefore, the application of deep hole blasting in rock drifting increasingly widespread. Implementation of deep rock blasting technique is limited by the conditions in the hard rock tunnel, explosives consumed in large quantities, prone to "pump gun" phenomenon, borehole utilization rate for hole blasting hard rock scene in question, on the hard rock tunnel hole blasting technology research, by changing the way undercutting, blasting parameters, charging structure to improve the blasting effect. In this paper, coal Chensilou example, through field tests of the technology in deep hole blasting hard rock launched a study.更多还原