矿业工程研究
礦業工程研究
광업공정연구
MINERAL ENGINEEERING RESEACH
2014年
3期
44-47
,共4页
分段凿岩阶段矿房法%矿柱回收%采切比%回采率
分段鑿巖階段礦房法%礦柱迴收%採切比%迴採率
분단착암계단광방법%광주회수%채절비%회채솔
sublevel drilling and stage stoping%recovery of ore pillars%ratio of extraction-to-cut%rate of recovery
乌吐布拉克铁矿床属急倾斜中厚的低品位矿体，矿山采用分段凿岩阶段矿房法回采矿体，矿石回采率为75％，经济效益不高．针对该矿体的赋存条件和特点，决定对现有采矿法的结构参数进行改进，增加矿柱回收工艺，并开展了采矿方法工业试验．工业试验表明，改进后的采矿方法其采切比为42．4 m3/（103 t），矿石回采率从原有的75％提高至85％，明显改善了主要技术经济指标，并提高了采场生产能力．
烏吐佈拉剋鐵礦床屬急傾斜中厚的低品位礦體，礦山採用分段鑿巖階段礦房法迴採礦體，礦石迴採率為75％，經濟效益不高．針對該礦體的賦存條件和特點，決定對現有採礦法的結構參數進行改進，增加礦柱迴收工藝，併開展瞭採礦方法工業試驗．工業試驗錶明，改進後的採礦方法其採切比為42．4 m3/（103 t），礦石迴採率從原有的75％提高至85％，明顯改善瞭主要技術經濟指標，併提高瞭採場生產能力．
오토포랍극철광상속급경사중후적저품위광체，광산채용분단착암계단광방법회채광체，광석회채솔위75％，경제효익불고．침대해광체적부존조건화특점，결정대현유채광법적결구삼수진행개진，증가광주회수공예，병개전료채광방법공업시험．공업시험표명，개진후적채광방법기채절비위42．4 m3/（103 t），광석회채솔종원유적75％제고지85％，명현개선료주요기술경제지표，병제고료채장생산능력．
The ore deposit of Wutublake Iron Mine belongs to steeply dipping,medium thick and low-grade orebodies.As the mining method used to be sublevel drilling and stage stoping,the rate of recovery is too low to recover economically.Regarding the characteristics of occurrence conditions,the decision was made to improve the structural parameters of the existing method and add a pillar recovery process to the modified method.The new mining method is carried out as an industrial test,it indicates that the ratio of extraction-to-cut is 42.4 m3/(103 t),and recovery rate has increased to 85% from 75%.It shows that the main techno -economic indexes including production capacity has been improved significantly.
