急倾斜薄矿脉中深孔落矿崩矿步距实验研究  

Caving Space Optimization Experiment on Middle-Deep Hole Blasting for Steeply Inclined Thin Veins

作　　者：安龙[1] 邬金[1] 徐帅[1] 李元辉[1] 

机构地区：[1]东北大学深部金属矿山安全开采教育部重点实验室,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2015年第4期560-564,共5页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(51204031;51274055);中央高校基本科研业务费专项资金资助项目(N130401007);辽宁省教育厅科学研究项目(L2014100);"十二五"国家科技攻关项目(2013BAB02B03)

摘　　要：以金厂沟梁金矿18#薄矿脉为工程依托,以实验室相似材料实验为手段,开展倾斜边壁约束条件下端部放矿实验研究.约束边壁条件下,测得12,14 m段高时沿进路方向放矿椭球体宽度分别为1.7和2.1 m,流轴角为4°,向下盘倾斜.确定步距仿真实验范围为1,2,3 m.通过步距仿真实验,以回贫差指标最大为判据,得到12和14 m段高下,步距为1 m时方案最优.利用三维激光扫描系统CMS对1 m步距下的工业实验区域进行扫描,探测结果表明:爆破后矿岩散体基本全部放出,实验区域下盘局部出现少量欠挖,上盘围岩基本完整,整体爆破效果良好.Taking the 18^#thin vein of Jinchanggouliang Gold Mine for example,the similar material simulation experiment face-end drawing was conducted under the restraint of the inclined side walls.At the height of 12 and 14 m and inclining to the side walls,the widths of the spheroid were measured as 1. 7 and 2. 1 m,respectively,under the flow axial angle of 4°. Thus,the scopes of caving space were determined as 1,2 and 3 m,respectively. Under the optimum experiment between the recovery rate and the dilution rate,the optimum space was determined to be 1 m under the height of 12 and 14 m. The industrial test at the blasting test area under the space of 1 m was accomplished when the 3D laser scanning CMS system was used to scan the tested areas. The results showed that a sound blasting effect was achieved with most part of the bulk ore rocks drawn,the top wall rocks remaining integrated,and the bottom side wall only partially under excavated.

关 键 词：急倾斜薄矿脉 中深孔落矿 崩矿步距优化 相似材料实验 工业实验 

分 类 号：TP[自动化与计算机技术]