The result offers some basis for predicting gas emission quantity accurately. 計算結果為瓦斯湧出量的準確預測提供了依據。
Under gassy coal seam condition, the full-heading development is employed.Because of the fast heading a high rate of gas emission arises. 在瓦斯含量較大的煤層採用綜掘掘進巷道,由於掘進速度快,出現了瓦斯湧出量過大的現象。