由残存瓦斯量确定煤层瓦斯压力及含量的方法  

Determination of Gas Pressure and Gas Content Based on Residual Gas Quantity of Coal Sample

作　　者：吴冬梅[1] 程远平[1] 安丰华[1] 

机构地区：[1]中国矿业大学煤矿瓦斯治理国家工程研究中心,江苏徐州221008

出　　处：《采矿与安全工程学报》2011年第2期315-318,共4页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金重点项目(70533050);中央高校基本科研业务费专项资金项目(2010QNB02)

摘　　要：系统研究了突出煤样的破碎粒度、瓦斯压力对突出煤层残存瓦斯含量的影响.实验结果表明,煤的破碎粒度对残存瓦斯含量有显著影响,粒径越大,残存瓦斯量越大,当煤样粒径较大或较小时,煤样的残存瓦斯含量均趋于恒定.利用相同暴露时间下同一粒径煤样得出残存瓦斯含量与煤层瓦斯压力和瓦斯含量均存在幂函数关系.依据此规律,可在测定煤层的残存瓦斯量后,结合已确定的煤样残存瓦斯量与瓦斯压力和瓦斯含量关系推算出煤层的瓦斯压力及瓦斯含量.该方法的提出为煤层瓦斯压力和瓦斯含量的确定特别是对突出煤层提出了一种新的可靠便捷方法,并在祁南煤矿现场得到了验证.In this paper,the residual gas content affected by coal size and gas pressure is investigated.Experiment results show that the coal size has a marked effect on residual gas content and a larger size has a large residual gas content.When the coal size is too large or too small,the residual gas content tends to a constant.The study also shows that the residual gas content has a power function relationship with gas content and gas pressure.Based on this law,after measuring the residual gas content,the gas content or gas pressure can be determined combining the known relationship between the residual gas content and the gas content or gas pressure.This provides a new convenient method for determining gas pressure and gas content,especially for the outburst coal seams.And its credibility has been validated in Qinan coal mine.

关 键 词：突出煤层 残存瓦斯含量 瓦斯压力 瓦斯含量 

分 类 号：TD712[矿业工程—矿井通风与安全]