煤层透气性系数测定方法中瓦斯含量计算存在的问题及建议  

Problems and suggestions on calculation of gas content in measuring methodof coal seam permeability coefficient

作　　者：薛文涛 XUE Wen-tao(Henan Coking Coal Energy Science and Technology Research Institute,Jiaozuo 454002,China)

机构地区：[1]河南焦煤能源科学技术研究所,河南焦作454002

出　　处：《煤炭科技》2024年第2期120-122,共3页Coal Science & Technology Magazine

基　　金：河南能源化工集团重大科技研发项目(202029-TF15)。

摘　　要：《煤层透气性系数测定方法—径向流量法》(MT/T 1173—2019)中规定了径向流量法测定煤层透气性系数的过程方法,在其依据煤层瓦斯压力计算瓦斯含量时存在单位换算的问题,造成瓦斯含量间接计算值与实测结果值偏差较大,甚至比极限吸附量还要大些。针对此问题,理论分析了瓦斯压力、瓦斯含量之间的相互换算,并结合工程应用实际情况给出了标准在工程应用中的建议。The method for determining the permeability coefficient of coal seams using the radial flow rate method is specified in the"Measuring method for gas permeability coefficient of coal seam—Radial flow method"(MT/T 1173-2019).However,there is a unit conversion problem when calculating the gas content based on the coal seam gas pressure,resulting in a large deviation between the calculated and measured values of the gas content,even greater than the maximum adsorption capacity.In response to this issue,a theoretical analysis was conducted on the mutual conversion between gas pressure and gas content,and suggestions for standard application in engineering were given based on practical engineering situations.

关 键 词：煤层透气性系数 瓦斯含量 问题 建议 

分 类 号：TD712[矿业工程—矿井通风与安全]