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为保证我某国防工程爆破降震需要,海军某部与冶金部长沙矿冶研究所于1979年冬共同成功地进行了水下水平深孔坞口炸礁控制爆破。总药量六吨多,使用炸药为梯恩梯,控制最大一段药量为170公斤。孔数一百多个、孔径百毫米,最孔达43米。上下七排孔,中间V型掏槽,共55段微差起爆相邻孔间隔时间10～20毫秒,采用双向继爆管、导爆索起爆。由于采用了多段、多回路、缓冲、预裂等比较先进的综合性微差爆破技术,特别是选用了精度较高的起爆器材—YMB—1型双向继爆管(阜新127新产品)既
In order to ensure the necessary blasting and seismic reduction for a certain national defense project, a submarine-level deep-hole dock reef reef-controlled blasting was successfully carried out jointly by the Navy and the Changsha Institute of Metallurgy, Mining and Metallurgy in the winter of 1979. The total dose of more than six tons, the use of TNT TNT, the maximum control of a dose of 170 kg. More than 100 holes, 100 mm aperture, the most hole up to 43 meters. Up and down seven rows of holes, the middle of the V-cut, a total of 55 micro-differential detonation interval between adjacent holes 10 to 20 milliseconds, followed by two-way tube, detonating cord detonation. As a result of the use of multi-stage, multi-loop, buffer, pre-cracking and other more advanced integrated millisecond blasting technology, in particular, the selection of a higher accuracy of the initiation equipment - YMB-1 two-way burst tube (Fuxin 127 new products)