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在“地质与勘探”第11期上,读过彭从斌同志的“探矿坑道采用大直径药包爆破的初步试验”一文以后,对其初步结论尚有不同的认识,故愿将我队在1957年进行大直径药包爆破的试验結果及个人的体会提出来,与大家共同商讨.我队在1957年,根据生产情况在原有凿岩设备的基础上,进行过40公厘大直径药包爆破的试验.其试验是在岩石结构均匀致密的基性岩脉、酸性岩脉、节理发达、硬度约相当于f=8～10,坑道断面为1.8×2.0公尺的水平探矿坑道中进行的,采用46与44公厘BK-15硬质合金的一字型钎头,使用朝鲜制硝铵炸药,采用电气爆破,选用角锥掏槽,其炮眼排列如图
On the 11th issue of Geology and Exploration, after reading Comrade Peng Congbin’s article “Preliminary Tests on Using Large Diameter Explosive Probing in Prospecting Ditches”, there is still a different understanding of its preliminary conclusions. Therefore, Team in 1957 for large diameter packet blasting test results and personal experience put forward to discuss with you.Our team in 1957, based on the production of the original drilling equipment, based on the 40 mm diameter The experiment of the explosion of the pouch was carried out in a basic prospecting ditch with uniform and compact rock structure and acidic dikes and joints developed with a hardness of approximately f = 8 ~ 10 and a tunnel section of 1.8 × 2.0 meters , The use of 46 and 44 mm BK-15 carbide brazing head, the use of North Korea-made ammonium nitrate explosives, the use of electrical blasting, the use of pyramid cut slot, the arrangement of its borehole as shown