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露天矿山往往由于穿孔设备性能所限,在矿体边界或部份终了边界,不能进行穿孔爆破工作。采用人工凿眼或风钻打眼,工效低,不能满足生产。因此,在诸多的特殊地段,需采用小硐室(本文指主巷长度小于10米)爆破,采用动力电源起爆一方面需铺设很长的主线;另一方面,需要防止静电及杂散电
Open-pit mines are often limited by perforation equipment performance and can not conduct perforation blasting at or near the boundaries of ore bodies. Using artificial chisel eyes or wind drilling eyes, low efficiency, can not meet the production. Therefore, in many special sections, it is necessary to adopt a small chamber (this article refers to the main lane length of less than 10 meters) blasting, the use of power detonation on the one hand need to lay a long main line; the other hand, the need to prevent static electricity and stray electricity