中深孔阶段矿房采矿法在急倾斜薄矿体中的应用  

Application of medium long hole staged ore room mining method to steeply inclined thin ore body

作　　者：孟庆学 宋德林 李朝民 Meng Qingxue;Song Delin;Li Chaomin(Inner Mongolia Baotou Xinda Gold Mining Co.,Ltd.;College of Mining and Coal,Inner Mongolia University of Science&Technology)

机构地区：[1]内蒙古包头鑫达黄金矿业有限责任公司 [2]内蒙古科技大学矿业与煤炭学院

出　　处：《黄金》2022年第3期36-39,共4页Gold

摘　　要：包头鑫达公司西柏树矿区24#脉为上盘破碎的急倾斜薄矿体,针对其采用浅孔留矿采矿法开采时存在的安全性能差、生产能力低、采矿损失贫化高等问题,开展了中深孔阶段矿房采矿法试验研究,并对矿体上盘采用预先加固的方法解决了上盘破碎导致的安全问题。详细阐述了采准切割工程布置、凿岩爆破、出矿等回采工艺,并进行了现场工业试验。试验结果表明:采用中深孔阶段矿房采矿法并对上盘预先加固,工序集中,有效减少了人员在采场内作业时间,人员劳动量小,取得了单班出矿能力240 t/d,采矿损失率9%,矿石贫化率7%的技术经济指标,效果较好,可为类似矿山提供参考。24#vein of Xibaishu Mining District of Baotou Xinda company is a steeply inclined thin ore body,broken in the upper wall.In view of the problems of poor safety performance,low production capacity,high mining loss and dilution when the ore body is mined by short-hole shrinkage mining method,experimental study on mining with medium long hole staged mining is carried out and the pre-reinforcement of the upper wall of the ore body is adopted,solving the safety problems caused by broken upper wall.The mining processes such as mining preparation cutting engineering layout,rock drilling and blasting,ore extraction and so on are described in detail,and field industrial experimental studies are carried out.The test results show that medium long hole staged mining and pre-reinforcement of the upper wall has focused procedures,effectively shortening the working time of personnel in the stope.The amount of labor is small.The technical and economic indicators of single-shift mining capacity 240 t/d,mining loss rate 9%and ore dilution rate 7%are obtained.The outcome is good.The method can provide reference for similar mines.

关 键 词：破碎矿体 急倾斜薄矿体 阶段矿房法 中深孔 上盘加固 

分 类 号：TD853.34[矿业工程—金属矿开采]