【摘要】 为了保证潘三矿B_11-2煤层17151（1）保护层工作面的安全顺利回采,在开采过程中,对17151（1）工作面瓦斯涌出来源进行了分析,根据分析结果提出了采用顺层钻孔瓦斯预抽、顶板走向钻孔采空区瓦斯抽放等瓦斯治理技术。结果表明,采前预抽及顶板走向钻孔抽放采空区瓦斯等技术可有效治理B_11-2下保护层工作面瓦斯超限问题,采前预抽对解决采煤工作面遇断层破碎带瓦斯超限效果十分明显。更多还原

【Abstract】 In order to ensure a safety and successful mining operation in No.17151 （1）mining face of the protective seam of B_11-2 seam in Pansan Mine,the paper analyzed the gas emission resources in No.17151 （1） coal mining face during the coal milling operation.Base on the analysis results,the paper provided the gas pre-drainage with boreholes drilled in and along the seam,the gas drainage with bore- holes drilled in the roof in the strike above the goaf and other gas control technology for the gas control.The results showed that the gas pre-drainage and the goaf gas drainage with boreholes in along the strike of the roof above goaf could effectively control the gas content over the limits of the B_11-2 coal mining face in the downward protective seam.The gas pre-drainage could have obvious benefits to solve the gas content over gas limits in the coal mining face with the fault broken zone.更多还原