摘要
为了研究煤层中瓦斯吸附解吸过程和瓦斯流动规律,基于国内外现有研究理论成果,设计了瓦斯吸附的实验系统,该系统主要包括温度控制系统、瓦斯吸附系统和数据采集与处理系统。通过自制的煤样,实验研究了同一煤质不同粒度煤样的等温吸附特性。采用定压动态吸附法进行瓦斯吸附实验,指出了瓦斯吸附量、吸附速率与煤样粒度之间的关系规律。通过对3种不同煤样的动态吸附曲线的对比分析,提出了瓦斯吸附量、吸附速率与吸附时间之间的关系式,建立了煤的瓦斯吸附量的数学模型。对于改进现有的抽采方法并提高抽采水平、对于煤与瓦斯的突出预测和煤矿瓦斯灾害的防治均具有理论意义和实际应用价值。
Based on the current theories and existing research results at home and abroad, the gas adsorption experimental system was designed to study the process of gas adsorption and desorption as well as gas flow law in coal seam,including temperature control system,gas ad-sorption system and data acquisition and processing system.The isothermal adsorption character-istics of coal samples with different particle sizes were studied by using constant pressure dynamic adsorption.The relationship between gas adsorption capacity,adsorption rate and particle size was obtained.According to dynamic adsorption curves of three kinds of different coal samples, the relational expression of gas adsorption capacity,adsorption rate and adsorption time was put forward,and the mathematical model of gas adsorption quantity of coal sample was established. In summary,this study possesses theoretical significance and practical application value for im-proving the existing gas drainage methods and their level,and for coal and gas outburst predic-tion and gas disaster prevention and control in coal mines.
出处
《中国煤炭》
北大核心
2014年第8期110-113,共4页
China Coal
基金
山西省高校科技资助项目(20091029)
山西大同大学博士基金项目(2008B22)
关键词
瓦斯吸附
瓦斯流动规律
等温吸附特性
定压动态吸附法
吸附速率
煤样粒度
gas absorption, gas flow rule, characteristics of isothermal adsorption, constantpressure dynamic adsorption, adsorption rate, particle size of coal sample
