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Gas Governing in Fullymechanized Coal Winning Ascending Solid Angle
Author(s): 
Pages: 19-21
Year: Issue:  12
Journal: Coal

Keyword:  上隅角瓦斯治理"两进一回";
Abstract: 我国绝大部分采煤工作面均采用"U"型通风方式,其上隅角是采空区瓦斯的集中涌出区域.文章通过对综采工作面上隅角瓦斯来源和瓦斯超限原因的分析,探索出一套"两进一回"治理上隅角瓦斯的通风方式.该方式能有效提高局部积聚区域内瓦斯扩散强度,并能加强巷道中风流的瓦斯运移,治理上隅角瓦斯简单易行、稳定可靠,有较好的推广应用价值.
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