平顶山矿区主采煤层孔隙特征研究  

Study on Pore Characteristics of Main Coal Seam in Pingdingshan Mining Area

作　　者：王英伟 王满 WANG Ying-wei;WANG Man(State Key Laboratory of Coking Coal Exploitation and Comprehensive Utilization,Pingdingshan 467000,China;Institute of Energy and Chemical Industry,China Pingmei Shenma Group,Pingdingshan 467000,China)

机构地区：[1]炼焦煤资源开发及综合利用国家重点实验室,河南平顶山467000 [2]中国平煤神马集团能源化工研究院,河南平顶山467000

出　　处：《煤炭技术》2020年第1期98-100,共3页Coal Technology

摘　　要：对平顶山矿区主采煤层丁组、戊组和己组煤样进行低温氮气吸附试验,分析等温吸附-脱附曲线形态,计算孔体积和比表面积,研究了不同煤层的孔形态及其对瓦斯的吸附-解吸能力。实验结果表明:原始煤层煤样比表面积为0.026~2.988 m^2/g,以小于8 nm的孔为主;孔隙结构复杂,大量存在一端闭合孔和"墨水瓶"孔,增加了煤层瓦斯抽采难度。The adsorption of nitrogen in low temperature experiments were carried out on the coal samples of coal group Ⅳ, Ⅴ and Ⅵ in Pingdingshan coal mine. The morphology of isothermal adsorption-desorption curve was analyzed and the pore volume and specific surface area were calculated. The pore morphology of different coal seams and their adsorption capacity to gas were studied. The experimental results show that the specific surface area of the coal samples in the original coal seam ranges from 0.026 to 2.988 m^2/g, with the pores smaller than 8 nm being dominant. The micropores are dominated by open vents and impervious holes closed at one end.

关 键 词：氮吸附 比表面积 孔径 孔类型 

分 类 号：TD712[矿业工程—矿井通风与安全] O647.3[理学—物理化学]