基于达西定律的煤粒瓦斯放散数值模拟研究  

Numerical simulation research of gas emission in coal particles based on Darcy's law

作　　者：王健[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《河南理工大学学报（自然科学版）》2015年第4期459-462,531,共5页Journal of Henan Polytechnic University（Natural Science）

基　　金：国家重点基础研究发展计划项目(973计划)(2011CB201202)

摘　　要：为了证明煤粒瓦斯解吸放散与视煤粒为球体无关,将煤粒简化为圆柱体进行研究。基于达西定律,建立柱坐标系下的瓦斯放散方程,运用有限体积法进行离散并无因次化,编制Visual Basic程序进行解算。通过对比分析模拟结果和实验结果,发现两者拟合程度很高,再一次证实了瓦斯在煤粒内部微孔隙中的流动符合达西定律,且进一步说明煤粒瓦斯放散规律与所选用煤粒形状无直接关系。In order to prove if that gas desorption emission is independent on coal particles sphere,the coal particles is assumed as cylinders to be studied. According to Darcy＇s law,gas emission equation in cylindrical coordinate was establishment using the finite volume method to discrete and be dimensionless. A computer software was designed in Visual Basic to solve the mathematical model. Through comparing and analysing the simulation results with experiment results,it is found that the two fitting degree is very high,and the conclusion once again confirms that gas emission from the coal particles conforms to Darcy＇s law. Meanwhile,it further explains the coal particle gas emission law and coal particle shapes have no direct relationship.

关 键 词：达西定律 瓦斯放散 煤粒形状 

分 类 号：TD712.6[矿业工程—矿井通风与安全]