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利用微差爆破可以减少爆破地震作用,同时也可以提高爆破效率。我矿在苏联专家的指导下,进行了试验:一、微差延缓起爆器的试制及试用关于微差爆破的起爆方法在苏联的有关资料中刊载共有三种,我矿采用了其中的一种,即是利用特殊的起爆器、普通雷管及传爆线来起爆各组药包。这次试验的起爆器是由苏联专家设计的(依据55型),如图1。第一次是在111号矿场第三号矿脈1275水平进行深孔爆破试验,采用的缓延时间为20毫秒,共爆炸7.034吨炸药, 29个鑽孔,第二次在1285水平采用延缓时间20毫秒进行试验,共爆炸7.120吨炸药,22个鑽孔。第三次在1246水平采用延缓时间为27毫
The use of differential blasting can reduce the blasting earthquake, but also can improve the blasting efficiency. I mine under the guidance of the Soviet Union experts conducted a test: First, trial and error of the pilot delay slightly detonated on the method of initiation of the differential blasting published in the Soviet Union, the relevant information in a total of three, I mine used one of them , That is, the use of special detonators, general detonators and blasting lines to detonate each group kits. The pilot detonator was designed by Soviet experts (based on Type 55), as shown in Figure 1. The first was a deep-hole blasting test at level 1275 of No. 3 mine at No. 111, with a delay of 20 milliseconds, a total explosion of 7.034 tons of explosives, 29 holes and the second at 1285 Test time 20 milliseconds, a total explosion of 7.120 tons of explosives, 22 holes. The third time in 1246 the level of delay is 27 milliseconds