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zhu dan dui zong fang gong zuo mian cai kong qu wa si fen bu de ying xiang fen xi
Author(s): 
Pages: 101-103
Year: Issue:  11
Journal: Safety in Coal Mines

Keyword:  综放工作面采空区注氮瓦斯浓度;
Abstract: 向采空区注氮除了可以有效地防治采空区煤炭自然发火外,还有消除瓦斯爆炸危险的作用。现以Ⅱ863综放工作面为例,通过沿综放工作面全面布点测定方法,对采空区注氮前后瓦斯浓度进行抽样实测分析,根据各测点注氮前后瓦斯浓度的实测结果,分析注氮对采空区瓦斯分布的影响。
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