开挖石方爆破时,常常产生瞎炮,不仅影响生产进度,而且还有发生人身伤亡事故的危险。我们在工地进行开挖时,常发生瞎炮,当时以为是使用过期炸药的毛病,但换用新炸药后,还是同样有瞎炮。经工作同志研究,发现瞎炮的主要原因是岩石节理发达,风鑽用水渗透很大,以致起爆筒受潮,而这与包紥方法有很大关系。设法改进包紥方法后, Blasting stone excavation, often produce blind artillery, not only affect the progress of production, but also the risk of personal injury accidents. When we were digging on site, we often saw blind beaters, which were thought to be problems with the use of expired explosives. However, the same blind artillery was used after we switched to new explosives. The study by the working comrades found that the main reason for the blind artillery was that the rock joints developed and that the water penetrated by the air drills was so great that the detonating drum was damp, which is closely related to the dressing method. After trying to improve the bandaging method,