And then studied the area channel flowed along and destructiveness to the coal seam, provide a reference for the mining of coal seam 8 in middle to deep part of the minefield.

 
  • 并對古河流的流經(jīng)區域和煤層的破壞程度作了研究,為井田中深部八煤層的開(kāi)采提供了參考依據。
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