Graphical symbols for use in technical documentation of coal mine machinery - graphical symbols for surface mine machinery 煤矿机械技术文件用图形符号露天矿机械图形符号
Standard guide for use of coal combustion products for surface mine reclamation : re - contouring and highwall reclamation 表面矿山改造用煤燃烧产品的使用标准指南:重新沿等高线修筑和改造
Standard guide for use of coal combustion products for surface mine reclamation : revegetation and mitigation of acid mine drainage 露天矿土壤改良用煤燃烧产物使用的标准指南:酸性矿排水区域的再植被和调节
Research on deformation monitor and stability predicting of tunnel wall rocks during conversion from surface mining into underground mining at daye iron mine 大冶铁矿露天转地下巷道围岩变形监测与稳定性预报研究
Considering cast blasting was to be carried in one internal coal surface mine , the cast blasting parameters , pre - splitting blast parameters , types of explosive and construction of charge were studied based on overseas examples 摘要针对国内大型露天煤矿要采用高台阶抛掷爆破技术,根据国外的事例经验,详细研究了高台阶抛掷爆破参数、预裂爆破参数、炸药类型和装药结构。