压力对煤体瓦斯吸附规律影响的实验研究
Experimental Study on Gas Adsorption Law in Coal Body Under Different Pressure
-
摘要: 为探究压力对瓦斯吸附规律的影响，设计并组装了瓦斯恒温定压动态吸附实验系统，研究了4种煤样在4组不同初始瓦斯压力下的吸附特性。通过处理实验数据，得到不同初压下的累计瓦斯吸附量随时间变化的实测曲线和吸附速率随时间变化的实测曲线，进而建立了与实测曲线拟合度很高的瓦斯吸附数学模型。结果表明：煤样瓦斯的极限吸附量与压力呈正相关；瓦斯吸附的初压越大，吸附速率越快。Abstract: In order to study the impact of pressure on gas adsorption law in coal seam, a dynamic gas adsorption experiment system under constant temperature and pressure was designed and installed, the adsorption characteristics of four kinds of coal samples were studied under four initial different gas pressure. By processing the test data, the measured change curves of cumulative gas adsorption amount over time and the change curves of the adsorption rate over time were obtained, the mathematic model of gas adsorption was established and it had a high fitting degree with the measured change curves. The results showed that there was a positive correlation between limit gas adsorption amount and pressure, while the greater the initial pressure of gas adsorption was, the faster the adsorption rate was.
-
Keywords:
- adsorption law /
- pressure /
- gas /
- mathematic model /
- cumulative adsorption amount /
- adsorption rate
-
-
[1] 王兆丰，刘军.我国煤矿瓦斯抽放存在的问题及对策探讨[J].煤炭安全，2007，36(3):29-33. [2] 安明燕，杜泽生，张连军.2007-2010年我们煤矿瓦斯事故统计分析[J].煤矿安全，2011，42(5):177-179. [3] 俞启香，程远平.矿井瓦斯防治[M].徐州：中国矿业大学出版社，2012. [4] 周世宁，林柏泉.煤层瓦斯赋存与流动理论[M].北京：煤炭工业出版社，1999. [5] 张占存，马丕梁.水分对不同煤种瓦斯吸附特性影响的实验研究[J]．煤炭学报，2008，33(2):144-147. [6] 何学秋，张力.外加电磁场对瓦斯吸附解吸的影响规律及作用机理的研究[J].中国矿业大学学报，2003，32（5）:476-478. [7] 何学秋，张力．外加电磁场对瓦斯吸附解吸的影响规律及作用机理的研究[J]．煤炭学报，2000，25(6):614-618． [8] 梁冰.温度对煤的瓦斯吸附性能影响的实验研究[J].黑龙江矿业学院学报，2000，10(1):20-22. [9] 李树刚，赵勇，张天军.基于低频振动的煤样吸附/解吸特性测试系统[J].煤炭学报，2010，35(7):1142-1146. [10] 李树刚，赵勇，张天军.低频机械振动影响煤样吸附特性研究[J].中国矿业大学学报，2012，41(6):873-877.
计量
- 文章访问数: 458
- HTML全文浏览量: 2
- PDF下载量: 0
下载:
