1980年末,在洛阳铝矿研制成功了230公斤·米风动碎石机,从而扩大了机械破碎的范围。它可以在采矿场破碎大块矿岩,代替采矿二次穿爆作业。这样,一方面可使采场二次爆破安全距离由400米减为200米,因此大大减少了矿山建设期间征用的耕地和动迁的民户,降 At the end of 1980, 230 kg · m of pneumatic stone breaker was successfully developed at Luoyang Aluminum Mine, thus expanding the scope of mechanical cracking. It can crush large ore rock in the mining field, instead of mining secondary wear explosion operations. In this way, on the one hand, the safety clearance of secondary blasting in a stope can be reduced from 400 meters to 200 meters, thus greatly reducing the requisitioned cultivated land and relocated households during the construction of the mine