大断面巷道掘进时,较多的采用中深孔爆破技术,但在爆破过程中由于人为原因,造成掘进工作面常常发生拒爆现象,给巷道掘进既带来重大安全隐患,又影响掘进工作面各项工作的正常开展。在应用中深孔爆破技术时,必须严格加强管理,避免拒爆事件的发生。 In the process of tunneling with large section, more medium-deep borehole blasting is adopted. However, due to man-made reasons during blasting, the phenomenon of exclusion of blasting often occurs on the heading face, which brings about significant safety risks and affects the heading face The normal work of all the work. In the application of deep-hole blasting technology, we must strictly strengthen management, to avoid the occurrence of refusal to blast.