基于含瓦斯煤固气耦合模型的数值模拟和应用研究

Numerical Simulation and Applications of Based on Solid-gas Coupling Model

综合考虑动态孔隙率、渗透率和渗流-扩散及瓦斯吸附/解吸引起变形,建立固气耦合动力学模型,利用模型就司马煤矿1206工作面建立单一顺层钻孔抽采煤层瓦斯模型,模拟钻孔有效抽采半径,以数值分析结果为依据对工作面瓦斯抽采钻孔进行设计,最终表明:抽采效果较好,数值分析对开展现场工作具有一定指导意义。

Based on dynamic permeability, porosity, adsorption/desorption and seepage - diffusion and gas leading to coal seam deformation, the gas-solid coupled dynamics model was set up, based on the model, the single Layer drilling pump model ex^acting coal seam gas model of 1206 working face of Sima Mine was set up, effective radius of extraction drilling was simuLated, working face gas extraction drill was designed based on numerical analysis result, the result showed that the drainage effect was good, the numerical analysis exerted guidance significance for the working on site.