山西大成煤业有限公司瓦斯抽采方案优化设计

Optimization Design of Gas Drainage Scheme in Shanxi Dacheng Coal Limited Company

我国煤与瓦斯突出防治的区域性措施有:开采保护层、预抽煤体中的瓦斯和煤层注水。针对如何解决大成煤业有限公司2号煤层在开采期间的瓦斯超标问题,采用分源预测法对2号煤层在开采期间的最大瓦斯涌出量进行了预测,结果显示,2号煤层在开采期间最大埋深处的瓦斯含量较高,因此,必须采用瓦斯抽采的方法来解决2号煤层的瓦斯超标问题,从而为2号煤层的安全生产提供保证。本文对2号煤层本煤层顺层瓦斯抽放和临近层顶板高抽巷瓦斯抽放的方法进行了理论分析,为解决2号和6号煤层的瓦斯问题提供了理论指导。

China＇s regional measures of coal and gas outburst prevention and treatment are mining protection layer, pre - pumping gas in coal and coal seam water injection. In order to solve gas overweight problems in mining peri- od of No. 2 coal seam in Dacheng coal limited company, adopting the forecast method of separate source predicts maximum amount of gas emission in mining period of No. 2 coal seam, the result shows that gas content of maximum cover depth in mining period of No. 2 coal seam is higher. Therefore, adopting gas drainage method to solve the No. 2 coal seam gas overweight problems is obligatory. Thus provides the guarantee for the production safety of No. 2 coal seam. This paper states the theoretical analysis cent layer roof high drainage roadway, provides coal seam of gas drainage methods of No. 2 coal seam along the layer and adjathe theoretical guidance for solving gas problems of No. 2 and No. 6