辛置矿综采面本煤层瓦斯治理技术应用

Application of Gas Control Technology in Coal Seam of Fully Mechanized Mining Face of Xinzhi Coal Mine

辛置矿为低瓦斯矿井,针对瓦斯分布不均的问题,提出了分区域治理的思路。采用分源预测法预测了2-109工作面的瓦斯涌出量,计算得出无法通过风排使瓦斯浓度达标。在预测工作面瓦斯涌出量的基础上,提出了顺层钻孔抽放瓦斯、采空区埋管抽放瓦斯相结合的抽采系统,计算得出了合理的抽采半径,建立了完整的瓦斯抽采系统,最终达到降低煤层瓦斯含量、消除隐患的目的。

Xinzhi Coal Mine is a low gas mine.Aiming at the uneven distribution of gas,the idea of regional control was put forward.The gas emission quantity of 2-109 working face was predicted by the method of partial source prediction,the calculation showed that the gas concentration could not reach the standard through air drainage.On the basis of predicting gas emission in working face,this paper put forward a drainage system combining gas drainage from drilling holes along the seam and gas drainage from buried pipes in goaf,calculated a reasonable drainage radius and established a complete gas drainage system,which finally achieved the goal of reducing coal seam gas content and eliminating hidden danger.