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yong ding ban mei ceng guan lu chou fang wa si
Author(s): 
Pages: 16-18+59
Year: Issue:  1
Journal: Safety in Coal Mines

Keyword:  抽放瓦斯瓦斯管路煤层采空区工作面瓦斯顶板煤采区布置开采层工作面生产卸压瓦斯;
Abstract: 本文阐述了利用15~#煤层顶板上的12~#煤层抽放瓦斯管路抽放15~#煤层卸压瓦斯的方法,文章指出用该方法进行抽放时应掌握好几个原则:①掌握合适的抽放负压以防止过大、过小而造成自然发火和抽放瓦斯浓度小于25%;②上层采空区和下部开采层的采区布置应对应重叠,否则因煤柱隔断效果不佳;③只有开采层采动后,上层的抽放才能有效果。
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