煤粒瓦斯解吸实验与数值模拟

Coal Particle Gas Desorption Experiment and Numerical Simulation

摘要: 采用理论分析、实验研究与数值模拟计算相结合的方法，结合煤体瓦斯吸附解吸实验系统对同一煤质不同粒径煤样进行了恒温条件下煤对瓦斯的动态吸附解吸实验。同时，从理论上建立了瓦斯一维非稳态流动的数学模型，利用有限差分方法对球坐标下的瓦斯流动数学模型进行分析，通过对比分析模拟结果和实验结果，得出瓦斯在煤粒中的流动符合达西定律。
- 瓦斯吸附 /
- 有限差分 /
- 煤矿安全 /
- 瓦斯涌出 /
- 达西定律
Abstract: Combined with theory analysis, experimental study and numerical simulation, the dynamic adsorption and desorption experiment of coal on gas were carried on for coal samples from same coal quality but different particle size under constant temperature conditions with the help of coal gas adsorption and desorption experiment system. At the same time, the mathematical model of one-dimensional unsteady gas flow was built, which was disposed with finite difference method. The computer software was designed with visual basic to solve the mathematical model. Through the contrastive analysis of theoretical calculation results and experiment results, the conclusions show that the gas flow in the coal partical corresponds to Darcy law.
- gas adsorption /
- finite difference /
- coal mine safety /
- gas emission /
- Darcy law

[1]	潘结南，陈江峰，徐文鹏.R/S分析及矿井瓦斯涌出量的分形预测[J].煤田地质与勘探,2001,29(3):14.
[2]	赵佩武，郑丙键，王彦凯.潞安矿区3^#煤层瓦斯解吸规律的测定[J].煤，2000 (4):38-40.
[3]	曹垚林.高压吸附下的瓦斯放散初速度研究[J].煤矿安全,2004,35(9):4-6.
[4]	姚有利,秦跃平,于海春.煤中瓦斯解吸渗透理论及实验研究[J].辽宁工程技术大学学报,2009,28(5): 701-703.
[5]	钟玲文,谢玉柱,员争荣.煤在温度和压力综合影响下的吸附性能及其未知区煤层气含量的预测方法[C]//中国煤田地质专业委员会2001年学术年会论文集.北京：中国煤炭学会，2001:97-105.
[6]	谢振华,陈绍杰.水分及温度对煤吸附甲烷的影响[J]. 北京科技大学学报,2007,29(S2):42-44.
[7]	田永东,李宁.煤对甲烷吸附能力的影响因素[J].西安科技大学学报,2007,27(2):247-250.
[8]	钱凯.煤层甲烷气勘探开发理论与实验测试技术[M].北京:石油工业出版社,1996.
[9]	许满贵,马正恒,陈甲，等.煤对甲烷吸附性能影响因素的实验研究[J].矿业工程研究,2009,24(2):51.