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特厚煤层卸压综放开采技术原理的实验研究
by
王家臣
,
吕华永
,
王兆会
,
张锦旺
Published in
煤炭学报
(01.03.2019)
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engineering
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displacement field
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extremely thick coal seam
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fallen and broken
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support load
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the fully mechanized top-coal caving mining after extracting the middle slice
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