东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (4): 560-564.DOI: 10.12068/j.issn.1005-3026.2015.04.023

• 资源与土木工程 • 上一篇    下一篇

急倾斜薄矿脉中深孔落矿崩矿步距实验研究

安龙， 邬金， 徐帅， 李元辉   

  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)
  • 收稿日期:2014-03-05 修回日期:2014-03-05 出版日期:2015-04-15 发布日期:2014-11-07
  • 通讯作者: 安龙
  • 作者简介:安龙(1987-)男，内蒙古呼伦贝尔人，东北大学博士研究生； 李元辉(1968-)，男，辽宁营口人，东北大学教授，博士生导师.
  • 基金资助:
    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)

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

AN Long， WU Jin， XU Shuai， LI Yuan-hui   

  1. Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines， Northeastern University， Shenyang 110819， China.
  • Received:2014-03-05 Revised:2014-03-05 Online:2015-04-15 Published:2014-11-07
  • Contact: XU Shuai
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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12，14m段高时沿进路方向放矿椭球体宽度分别为1.7和2.1m，流轴角为4°，向下盘倾斜.确定步距仿真实验范围为1，2，3m.通过步距仿真实验，以回贫差指标最大为判据，得到12和14m段高下，步距为1m时方案最优.利用三维激光扫描系统CMS对1m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.

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

Abstract: 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 14m and inclining to the side walls， the widths of the spheroid were measured as 1.7 and 2.1m， respectively， under the flow axial angle of 4°. Thus， the scopes of caving space were determined as 1， 2 and 3m， respectively. Under the optimum experiment between the recovery rate and the dilution rate， the optimum space was determined to be 1m under the height of 12 and 14m. The industrial test at the blasting test area under the space of 1m 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.

Key words: steeply inclined thin veins, middle-deep hole blasting, caving space optimization, similar material experiment, industrial test

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