摘要
The recovery ratio of top coal caving mining plays a key role in the development of this mining method. For the proposes to raise the recovery ratio and considering heading advance and roadway maintenance, a new method of full seam mining for gently inclined thick coal seams is put forward on the basis of a theoretic research and engineering practice.
The recovery ratio of top coal caving mining plays a key role in the development of this mining method. For the proposes to raise the recovery ratio and considering heading advance and roadway maintenance, a new method of full seam mining for gently inclined thick coal seams is put forward on the basis of a theoretic research and engineering practice.
基金
TheNationalImportantTechniqueInnovationItem (No .[2 0 0 1] 411)
关键词
厚煤层
采煤工艺
放顶煤开采
巷道
recovery ratio
thick coal seam
new method
'overlapped layer'.
