Most of the coalbeds in Panguan syncline are easilydrainable or drainable, and some are hard drainable. The lower coalbeds are better than the upper coalbeds in air penetrability.
盘关向斜煤层主要属勉强可以抽放煤层和易于抽放煤层，部分为较难抽放煤层，煤系下部煤层透气性较上部煤层为好；
Most of the coalbeds in Panguan syncline are easilydrainable or drainable, and some are hard drainable. The lower coalbeds are better than the upper coalbeds in air penetrability.
盘关向斜煤层主要属勉强可以抽放煤层和易于抽放煤层，部分为较难抽放煤层，煤系下部煤层透气性较上部煤层为好；
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