急倾斜中厚破碎矿体采场结构参数的优化及应用  

Optimization of stope structure parameters for steeply inclined medium-thick fragmented ore bodies and its application

作　　者：刘龙琼 周乐 温耸 Liu Longqiong;Zhou Le;Wen Song(Changchun Gold Research Institute Co.,Ltd.;Shihu Mining Co.,Ltd.,China National Gold Group Co.,Ltd.)

机构地区：[1]长春黄金研究院有限公司采矿研究所,130012 [2]长春黄金研究院有限公司 [3]中国黄金集团石湖矿业有限公司

出　　处：《黄金》2020年第10期40-45,共6页Gold

基　　金：中国黄金集团有限公司科研项目(A2019CK07)。

摘　　要：鉴于采用上向水平分层充填采矿法开采急倾斜中厚破碎矿体时存在回采效率低、采矿成本高等问题,结合石湖金矿矿体开采技术条件,开展了下向凿岩平行中深孔落矿分段充填采矿法试验研究,并运用数值模拟软件对采场结构参数进行了优化。工程应用结果表明:按照“一步回采矿柱,二步回采矿房”思路,在分段高10 m的前提下,矿柱与矿房宽度分别为15 m和35 m时,采场最为稳定。采用该结构参数进行回采,采场生产能力达到202 t/d,矿石贫化率为5.36%,采矿损失率为3.52%,效果较好,可为类似金属矿山开采提供参考经验。Since the upward horizontal slicing and filling mining method used in Shihu Gold Mine to mine the steeply inclined medium-thick fragmented ore bodies incurs low stoping efficiency and high mining costs,Shihu Gold Mine carries out experimental research on downward drilling parallel medium-long hole caving and sublevel filling mining method based on the mining technical conditions of the ore bodies in Shihu Gold Mine,and optimizes stope structure parameters using numerical simulation software.Industrial application results show that according to the stra-tegy"to recover the ore pillar in the first step and the ore room in the second"and in the premise of 10 m sublevel height,the stope is the most stable when the ore pillar and the ore room are 15 m and 35 m in width respectively.With these structure parameters for mining,the stope production capacity reaches 202 t/d,ore dilution is 5.36%,mining loss rate is 3.52%,showing a fairly good effect.The research can be used as reference by similar metal mines.

关 键 词：急倾斜中厚 破碎矿体 下向凿岩 平行中深孔 分段 充填采矿法 采场结构参数 

分 类 号：TD853.34[矿业工程—金属矿开采]