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chute blasting
expl.
溜井爆破
去除溜孔堵塞爆破,矿石或岩块堵塞在溜井或格筛中不能继续下落时,把炸药放在堵塞物的缝隙中进行爆破,使矿石和岩块经二次破碎或在爆破振动作用下继续下溜的作业
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