煤层瓦斯含量直接测定技术在中岭煤矿瓦斯抽采效果评价中的应用

Application of Direct Measurement Technique of Coal-seam Gas Content in Gas Drainage and Extraction Effect Evaluation in Zhongling Mine

瓦斯含量是煤层瓦斯基本参数之一,是进行煤矿瓦斯综合治理的重要依据。通过对评价指标的综合分析,确定以直接测定的残余瓦斯含量(Qc)作为预抽效果评价的指标。利用瓦斯直接测定装备及方法对中岭煤矿12013综采工作面的残余瓦斯含量进行了测定,根据测定结果对12013综采工作面进行突出危险性区域划分。在不同突出危险区采取相应的防突措施,使工作面的回采速度提高近1倍,实现了工作面的安全回采,取得了较好的安全效益和经济效益。

Gas content is one of the basic parameters of coal -bed methane, and also an important basis for comprehensive gas control. On the base of the comprehensive analysis of evaluation indicators, it was determined to take the the directly-measured residual gas content (Qc) as an indicator for pre-draining effect evaluation. The measurement of the residual gas content in 12013 fully-mechanized face of Zhongling Coal Mine was carried out by using direct gas measuring equipment and method, and the division of the dangerous outburst regions in 12013 working face was made according to the measured results. Corresponding outburst - prevention measures were taken in different outburst region,this thus nearly doubled the drawing rate of the working face, realizeed the safe winning of the face and achieved better safety and economic benefits.