古书院矿15号煤153302工作面采空区上隅角瓦斯浓度的理论计算及数值模拟研究

Study on Theoretical Calculation and Numerical Simulation of Gushuyuan Mine No. 15 Coal Seam 153302 Working Face Goaf Upper Corner Gas Concentration

由于晋煤集团古书院矿15号煤层153302工作面采空区的环境非常复杂,现场实测难以测得,因此采用理论计算和数值模拟的手段对采空区瓦斯分布等安全问题的内在机制和基本规律进行了研究,采空区上隅角瓦斯浓度理论计算结果为0.334%~0.556%,数值模拟计算结果为0.5%左右,二者结果相吻合。此研究为该矿今后的采空区瓦斯灾害防治提供了理论支撑。

Due to the complex environment of Gushuyuan Mine No. 15 coal seam 153302 working face goaf, with difficulty to get actual measurement on site, theory calculation and numerical simulation were adopted to study the mechanism and law of gas distribution, the gas concentration of upper corner in goaf was 0.334%~0.556% by theory calculation, 0.5% or so by numerical simulation, the two figures were identical basically, which provided theoretical support for the goaf gas control of the mine.