放顶煤 sublevel caving coal
炮采放顶煤 blast mining top-coal drawing ; top-coal blasting and mining
综采放顶煤 special-thick coal seam ; Fully mechanized coal caving ; fully mechanized sublevel caving mining ; full-mechanized caving mining method
软弱顶煤 soft top coal
预注水处理顶煤 water pre-infusion treating top coal
顶煤弱化 intenerating technique of top coal ; Top-coal weakening ; weakening of top coal
放顶煤开采 coal caving mining ; sublevel caving mining ; top coal caving
贴顶煤 sticky tops
放顶煤回采工艺参数的合理选取，对顶煤的有效回收起着重要的作用。
The rational selection of the technique parameters played an important role in the effective recovery of top coal.
大倾角松软煤层综放面实现高产高效的关键之一是端面顶煤稳定性控制。
Stability control of the head faces top-coal is one of the key techniques of realizing high production and high efficiency to coal mining in fully mechanized top-coal caving face.
同时研究本分类系统软件在综采放顶煤工作面顶煤的可放性诊断、支架选型和放煤机构设计中的应用。
And study the classification system application in diagnosing the caving and drawing characteristics of top-coal, choosing support and designing drawing mechanism.
应用推荐