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炸药在炮孔中爆破,反应速度特别快,单位时间内可释放出巨大的能量,人们利用爆破的这种威力来代做许多笨重的工作。在山沟里建设煤矿没有工业广场,可利用定向爆破,装入几十吨至上百吨的炸药,把山头削平、搬家,比用人工、机械来搬运要经济、廉价、快速得多。
Explosive blasting in the blast hole, the reaction speed particularly fast, unit time can release huge energy, people use this power of blasting to do many heavy work on behalf of. There is no industrial plaza in the ravine where coal mines can be built. Directional blasting can be used to load tens of tons of explosives up to a hundred tons. It is economical, cheap and much faster to level and move the hills than to transport them manually and mechanically.