上向分段废石尾砂胶结充填采矿法在广山铁矿的应用

摘要

广山铁矿原设计采用无底柱分段崩落法.由于矿石稳固性差,采矿巷道跨冒严重,近几年来应用上向分段废石、尾砂胶结嗣后充填采矿法,不仅解决了因矿山开采引发的地质灾害、环保问题,而且还有效地回收了矿产资源.采矿回收率由原来的70％提高到93％,贫比率由原来的30％下降到低于5％.%The pillarless sublevel caving method is originally adopted in Guangshan Iron Mine.Because of poor stability of the ore,and seriously caving in mining roadway,the sublevel upwards filling stoping with rocks and cemented tailings has been applied in recent years,which can not only solve geological disasters and environmental issues caused by mining,but also effectively recover mineral resources.The mining recovery is increased from 70％ to 93％ and the dilution ratio decreased from 30％ to 5％ below.