“中深孔探矿”在排山楼公司“二次圈定”工作中的应用

Application of "medium deep hole prospecting" in "secondary delineation" of Paishanlou company

随着井下开采深度不断增加,排山楼公司矿体分支复合、尖灭再现的现象逐渐增多,致使采矿损失率、矿石贫化率波动幅度变大,因此排山楼公司通过增加“二次圈定”探矿工程进一步圈定了矿体界限,但这样一来,也加长了矿块的回采周期,使矿块的回采工作不能按照计划进行,从而影响井下生产衔接和三级矿量。为最大化的减少“二次圈定”工作带来的影响,技术人员利用井下现有设备YGZ--90钻机施工中深孔进行“二次圈定”探矿,该方法不仅有效地降低了采矿损失率、矿石贫化率,还大大降低了成本、缩短了回采周期,为排山楼公司带来了可观的经济效益。现该方法已在排山楼公司广泛使用。

With the continuous increase of underground mining depth,the phenomenon of branch compound and pinch out reappearance of ore body in Paishanlou company increases gradually,which causes the fluctuation range of mining loss rate and ore dilution rate to increase.Therefore,Paishanlou company further delimits the ore body boundary by increasing the"secondary delineation"prospecting project,but in this way,it also lengthens the mining cycle of ore block and makes the mining of ore block longer The work can not be carried out according to the plan,thus affecting the underground production connection and the third-class ore volume.In order to minimize the impact of the"secondary delineation"work,technicians use the existing underground equipment ygz-90 drilling rig to carry out"secondary delineation"prospecting in the construction of deep holes.This method not only effectively reduces the mining loss rate and ore dilution rate,but also greatly reduces the cost and mining cycle,which brings considerable economic benefits to Paishanlou company.Now this method has been widely used in Paishanlou company.