采空区

• Mining technology in 6 coal seam
  综放开放采空区煤炭自燃防治技术
• Comprehensive provention research on goaf area spontaneous fire
  采空区煤炭自燃灾害综合防治的研究
• Tree - dimension finite element analysis on mined - out area stability
  采空区稳定性的三维有限元模拟
• Analysis on goaf seal wall
  煤矿井下采空区密闭墙相关问题的探讨
• Blasting technology in goafunder complicated geological conditions
  复杂地质条件下的采空区爆破技术
• Numerical analysis of stability of mined area in pingshui copper mine
  平水铜矿采空区稳定性数值分析
• Technique for gas drainage from high - located inclined holes in roof
  顶板高位倾斜钻孔抽放采空区瓦斯
• Application of gas drainage from gob in gas control of top slice
  采空区抽放在顶分层瓦斯治理中的应用
• Application of goaf methane drainage in huozhou coal mining district
  采空区瓦斯抽放在霍州矿区的应用
• Application of high density resistivity survey in mined - out areas
  高密度电阻率法在采空区探测中的应用