分段凿岩阶段出矿连续采矿法在缓倾斜极厚大矿体中的应用  

Application of sublevel drilling and staged ore extraction continuous mining method in moderately inclined extremely thick and large orebodies

作　　者：刘再涛 Liu Zaitao(Xincheng Gold Mine,Shandong Gold Mining Co.,Ltd.)

机构地区：[1]山东黄金矿业股份有限公司新城金矿

出　　处：《黄金》2020年第1期41-43,50,共4页Gold

基　　金：国家自然科学青年基金项目(51974043);重庆市基础科学与前沿技术研究专项一般项目(cstc2018jcyjA3320)

摘　　要：为进一步研究探讨和改进缓倾斜极厚大矿体开采高贫损、采切工程量大的问题,以新城金矿滕家矿区TⅡ号矿体为背景,开展了分段凿岩阶段出矿连续采矿法试验研究。详细介绍了上盘预护顶技术,后退式连续回采、预裂爆破、抛掷爆破、应用充气气囊和中深孔落矿等回采工艺。现场试验结果表明:采用该方法各工序集中作业,大幅减少了井下作业人员数量,提高了安全性,取得了生产能力504. 19 t/d,矿石贫化率6%,采矿损失率7%的良好技术指标,可为其他矿山提供参考借鉴。In order to further discuss and renovate the process mining the high loss and dilution rate, intense workload of cutting projects in the mining of moderately inclined extremely thick and large orebodies,the paper takes the TII orebody of Tengjia Gold District of Xincheng Gold Mine as the background,and carries out experimental research on sublevel drilling and staged ore extraction continuous mining method. The paper in detail introduced the stoping methods including upper wall in-advance roof support,retreat continuous stoping,in-advance cracking blasting,cast blasting,airbag and medium-long hole caving. Onsite test results show that the application of the method centralizes each link,greatly reducing the number of underground staff,improving safety,and achieving good technical index including the production capacity of 504. 19 t/d,ore dilution rate 6 % and mining loss rate 7 %. The study can provide reference for other mines.

关 键 词：中深孔落矿 预护顶 缓倾斜极厚大矿体 连续高分段 分段凿岩 阶段出矿 

分 类 号：TD853.2[矿业工程—金属矿开采]