摘要
把瓦斯排放过程中煤层中孔、大孔和裂隙内的游离瓦斯和微孔、小孔内的吸附相瓦斯处理作准热力平衡、准化学势平衡状态，把吸附相瓦斯的解吸处理作游离瓦斯的不定常、连续分布解吸源，把游离瓦斯在煤层中的运动处理作多孔介质内不定常、可压缩、有连续分布源的线性渗流运动，然后利用守衡原理和达西渗流定律建立了煤层瓦斯实用动力学方程，并给出其Ｇａｌｅｒｋｉｎ有限元解法．文末，介绍了煤层瓦斯实用动力学方程的一个应用算例．
Free gas in medium size pores, macropores and crack and absorbed gas in micropores and small pores in coal seam are considered to be in the state of thermodynamic pseudoequilibrium during the course of gas drainage, the desorption of absorbed gas to be the timedependent, continuous distribution desorption source of free gas, and the motion of free gas in coal seam to be the timedependent, compressible, linear infiltration motion with continuous distribution source in porous media. Then using the conservation principle and the Darcy’s infiltration law, the two and threedimensional gas dynamic equations is established and its Galerkin’s finite element solution is put forward. In the end, a typical example is given.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
1997年第4期74-77,共4页
Journal of China University of Mining & Technology
