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不久前,日本在本国的三井船尾矿山采用高速摄影机观察分析了炮泥及起爆方式对于毫秒爆破效果的影响,并对爆破时岩石的动态作了实验研究取得了比较好的效果. 实验是在石灰岩的台阶上进行的,用20毫秒的雷管进行掏槽爆破,并用高速摄影机记录炮泥及岩层的初始移动时间、移动速度,以及岩石的抛出距离等参数.对炮泥的堵塞效果;正向和逆向起爆方式的爆破效果作了对比分析.认为:正向起爆时,炮泥喷出速度快,喷出量也多,逆向起爆时情况则相反,爆破效果比正向起爆好.胶质炮泥比
Not long ago, Japan’s Mitsui Arsenal in its own country used a high-speed camera to observe and analyze the influence of shot-blasting and blasting methods on the millisecond blasting effect, and the experimental study of the rock during blasting achieved good results. The experiment was conducted on a limestone With a 20-millisecond detonator, and using a high-speed camera to record parameters such as the initial movement time of the shotcrete and the rock formation, the moving speed, and the throwing distance of the rock, etc. The jamming effect on the shotcrete is positive And reverse detonation blasting effect made a comparative analysis that: the positive detonation, shotcrete blasting speed, the amount of discharge is more, reverse detonation when the contrary, the blasting effect is better than the positive detonation. Mud ratio