基于碳氢同位素分析技术的瓦斯涌出构成研究  

Gas Emission Composition Based on Carbon-hydrogen Isotope Analysis Technology

作　　者：高宏 杨宏伟 慈祥 GAO Hong;YANG Hongwei;CI Xiang(China Coal Technology and Engineering Group Shenyang Research Institute,Shenyang 110016,China;State Key Laboratory of Coal Mine Safety Technology,Fushun 113122,China;College of Mining,Liaoning Technical University,Fuxin 123000,China)

机构地区：[1]煤科集团沈阳研究院有限公司,辽宁沈阳110016 [2]煤矿安全技术国家重点实验室,辽宁抚顺113122 [3]辽宁工程技术大学矿业学院,辽宁阜新123000

出　　处：《煤矿安全》2018年第11期16-19,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51774182;51404138)

摘　　要：通过对现场取的瓦斯气样进行碳氢同位素测试,分析单一煤层瓦斯气体和多个煤层混合瓦斯气体对应的δ13C(CH4),δD(CH4)和δ13C(CO2)等碳、氢同位素组成差异,对近距离煤层进行对比分析。运用数学方法,建立相关模型,利用混合瓦斯不同来源的碳氢同位素特征,建立混合瓦斯气体同位素计算公式。通过实测单一煤层瓦斯气体和多个煤层混合瓦斯气体的同位素值,并分析反算不同瓦斯来源的比例,建立了多源气体混合模型,确定所取气样中各个煤层瓦斯来源及比例。研究15#煤层XV1306工作面瓦斯来源,通过分析反算气样中不同瓦斯来源的比例,为XV1306工作面瓦斯来源及治理提供依据,采用分源抽放的方法,保障工作面安全高效生产。By testing hydrocarbon isotopes of gas samples taken at the site, the composition of carbon and hydrogen isotopes and differences with δ^13 C（CH4）, δD（CH4）and δ^13 C（CO2）in a single coal seam gas and multiple mixed gas of coal seam are analyzed,and the close coal seams are compared and analyzed. The mathematical method is used to set up the model and the mixed hydrocarbon isotope characteristics of gas from different sources are used to establish a calculation formula of mixed gas isotopes.Through testing the numerical value of isotope which is in a single coal seam gas and multiple mixed gas of coal seam, the proportion of different gas sources is analyzed and calculated, and a model of multiple source gas is builded. The source and proportion of each coal seam gas in the gas sample are determined. Through researching the gas source of XV1306 working face of15#coal, the proportion to the gas sample of different gas sources is analyzed and calculated in order to provide the basis for gas source and governance in XV1306 working face. The method of differentiating source drainage is used to ensure the safety of working face and efficient production.

关 键 词：碳氢同位素 瓦斯涌出 瓦斯来源 分源抽放 瓦斯治理 

分 类 号：TD712[矿业工程—矿井通风与安全]