回采

• Geology technique guarantee of actual mining
  回采中的地质技术保障
• Optimizing supporting parameter in entry of an island workface
  孤岛工作面回采巷道支护参数优化
• Confirmation of reasonable pillar ' s size in actual mining roadways
  回采巷道合理煤柱尺寸的确定
• Application of local advance mining method in a working face
  回采工作面局部前进式推进方法的应用
• Winning technology in unstable occurrence region of coal seams
  煤层赋存不稳定区域采煤的回采工艺
• Application of road locally retained for next sublevel in coal face
  回采工作面局部沿空留巷的应用
• Practice of deep shaft no . 4 working roadway support in wennan coal mine
  汶南煤矿深井回采巷道支护
• Round steel link chains for conveyors and winning equipment in mining
  采矿输送机和回采设备圆钢链
• On gas comprehensive prevention technology in mining face
  回采工作面瓦斯综合治理技术的研究与探讨
• Application of electric - maguetic penetrating ct technique in working face
  技术在回采工作面的应用