Numerical modeling of gas flow in coal pores for methane drainage

Journal of Sustainable Mining

Ali Mirzaghorbanali¹  Faramarz Doulati Ardejani²  Adel Taheri³  Farhang Sereshki³ 

[1] School of Civil, Mining and Environmental Engineering, University of Wollongong, NSW, Australia;School of Mining, College of Engineering, University of Tehran, Iran;School of Mining, Petroleum & Geophysics Engineering, Shahrood University of Technology, Shahrood, Iran;

关键词: Coal mining;    Methane drainage;    Gas flow;    Numerical simulation;   

DOI  :  10.1016/j.jsm.2016.10.001

来源: DOAJ

【 摘 要 】

The sudden explosion of methane during underground coal mining is a major dilemma. To mitigate its occurrence and reduce the extent of methane diffusion, gas drainage operations are carried out before mining. This paper investigates methane gas flow in a coal block in order to calculate the pressure of gas and its molecule velocity for methane gas drainage operation. A coal piece surrounded by cleats was used for geometrical modeling and numerical simulation. Movements of fluid and gas molecules in a porous medium were successfully simulated. The numerical solution is based on COMSOL Multiphysics software. The validity of the numerical simulation was assessed using an analytical model with satisfactory results.

【 授权许可】

Unknown