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阐述了地面钻孔抽放采空区瓦斯的可行性，并对地面钻孔的布孔原则、施工工艺进行了尝试，结果表明对低透气性煤层进行采后抽放能取得较好效果。
The feasibility of ground borehole drainage of goaf gas was expounded. The drilling principle and construction technology of ground borehole were tried. The results show that it is effective to carry out post-production drainage on low permeability coal seam.