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yong xia xing shun xiang chan xin tong feng fang shi qu dai wei xiang pai fang wa si
Pages: 18-20+49
Year: Issue:  6
Journal: Safety in Coal Mines

Keyword:  通风方式瓦斯浓度回采工作面尾巷排放下隅角煤矿顺向瓦斯超限安全生产回风道;
Abstract: 根据曾家山煤矿多年来对各种通风方式的实践,认为采用下行顺向掺新通风方式有利于处理回采工作面下隅角瓦斯超限问题。如27407工作面下风巷在长达一年多的顺向掺新风流中,瓦斯浓度平均为0.52%。达到了安全生产的目的。
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