页岩爆破最佳炮孔布置方式试验研究  

Experimental Study on the Best Pattern of Blasthole of Shale

作　　者：胡磊[1,2] 王玉杰[2] 任高峰[2] 任少峰 刘校 黄洋[2] 

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,沈阳110819 [2]武汉理工大学资源与环境工程学院,武汉430070 [3]山东黄金矿业(莱州)有限公司焦家金矿,莱州261441 [4]武汉长江科创技术发展有限公司长江工程技术分公司,武汉430010

出　　处：《爆破》2015年第4期44-48,共5页Blasting

基　　金：国家"十二五"科技支撑计划重点项目(2011BAB05B03);国家自然科学基金资助项目(51104112);中央高校基本科研业务费专项资金资助(2013-ZY-073)

摘　　要：为探索页岩爆破的最佳炮孔布置方式,针对页岩的层理特性,在湖北某页岩矿山开采现场设计试验进行研究。选取钻孔效率及爆破后矿岩的平均块度、大块率、块度均匀性等作为评价指标。在相同的爆破参数下,当炮孔及临空面与层理成不同角度时,采用记录钻孔耗时的方法分析比较钻孔施工的难易程度;采用数字图片块度分析软件Split-Desktop处理爆堆照片的方法分析比较爆破效果的差异。试验结果表明:页岩爆破的最佳炮孔布置方式为炮孔与层理垂直,临空面与层理平行。To explore the optimal pattern of blasthole in shale, the experimental study was carried out based on the characteristic of shale in Hubei province. The drilling efficiency, average lumpiness, boulder yield and lumpiness uniformity were considered as evaluation indexes. The difficulty in the construction of drilling was discussed and com- pared by recording the drilling time. Meanwhile, the blasting effect was analyzed and compared by a digital lumpiness image analysis software Split-Desktop. On the conditions of same blasting parameters, when the angle between the hole were different, the different free faces and the stratification were also obtained. The study showed that the optimal pattern of blasthole of shale was achieved when the hole perpendicular to the stratification and the free face parallel to the stratification.

关 键 词：页岩 层理 炮孔布置 钻孔效率 爆破效果 块度分析 

分 类 号：TD235.3[矿业工程—矿井建设]