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任务的提出莱欧尼铁矿矿体条件复杂,矿物异质多相,给凿岩爆破作业带来困难。在易碎裂矿石或赭石、粘土中钻凿炮孔时常发生卡钻等现象。由于经常从孔壁上碎裂下小岩块,仅用压气无法将其吹净,必须使用专用工具清理炮孔。使用普通的短药包装药时,药卷经常卡在孔内碎裂的矿石处。当用炮棍推压时,往往使药卷产生弯曲和变形,并重新掉
Tasks proposed Laiou Ni iron ore complex ore complex heterogeneous heterogeneous, to drill blasting operations difficult. In fragile ore or ocher, clay drilling holes often happen stuck and so on. Due to the frequent fracturing of small rock masses from the walls of the holes, it is not possible to blow them out with compressed air only. Special tools must be used to clear the holes. When using a regular short drug pack, the coil often gets stuck in the cracked ore at the hole. When pressed with a cannon stick, it tends to curl and deform the roll and remove it again