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留矿法采场电气爆破在我坑先后试用过几种方法。由于受雷管段数(只125段)的限制,只得采用多开阶段,多拉槽,一次爆破,多拉母线和利用线路控制器等办法来解决采场中一次起爆大量爆破的问题。但上述办法各存在着较大的缺陷。因在试用中未获得显著的成效,也就没有推广。八月份又提出了以加长雷管延期导火索的长度来达到延发目的的方案,由于坑口党和领导的大力支持,便大胆地试制了一批多段延发电气雷管,经过三个多月来的生产实际证明,使用效果良好,采场中大量爆破得以解决。
Mineral mining method stope blasting in my pit has tried several ways. Due to the number of detonator sections (only 125 sections), the problem of a large amount of blasting in a stope has been solved only by adopting multi-opening stages, multi-pull slots, primary blasting, Dola bus and using line controllers. However, there are major shortcomings in the above methods. Because in the trial did not obtain significant results, there is no promotion. In August, another proposal was made to extend the length of the detonator to extend the fuse length. Due to the strong support from the party and leaders of Hang Hau, a number of extended electric detonators were boldly trialled. After more than three months The actual production proved that the use of good results, a lot of blasting stope to be resolved.