Coal mining results in strata movement and surrounding rock failure. Eventually, manual mining space will be occupied by the destructed coal rock, making it difficult to conduct field tests of the coal seam to explore gas seepage and transport patterns. Therefore, computational fluid dynamics (CFD) numerical computation is an important tool for such studies. From the aspect of gas pre-drainage, for layer-through boreholes in the floor roadway of the 8,406 working face in Yangquan Mine 5 in China, reasonable layout parameters were obtained by CFD optimization. For effectively controlling the scope of boreholes along coal seam 9 in the Kaiyuan Mine, CFD computation was performed. The results revealed that the horizontal spacing between boreholes should be ≤2 m when a tri-quincuncial borehole layout is used. Optimization of the surface well position layout for the fault structure zone in the Xinjing Mine of the Yangquan mining area indicated that the horizontal distance between the surface well and the fault plane should be <150 m. From the aspect of gas drainage with mining-induced pressure relief, CFD computation was performed for pressure-relieved gas transport in the K8205 working face of Yangquan Mine 3. The results showed that forced roof caving should be used before the overhang length of hard roof reaches 25 m in the K8205 working face to avoid gas overrun. From the aspect of gas drainage from the abandoned gob, surface well control scopes at different surface well positions were computed, and an O-ring fissure zone is proposed as a reasonable scope for the surface well layout. CFD computation has been widely applied to coal and gas co-extraction in the Yangquan mining area and has played a significant role in guiding related gas drainage engineering practice.

煤炭开采导致地层移动和围岩破坏。最终，人工开采的空间将被破坏的煤岩所占据，导致难以对煤层进行现场测试以探索瓦斯渗流和输运模式。因此，计算流体动力学 (CFD) 数值计算是此类研究的重要工具。从瓦斯预抽方面，针对我国阳泉五矿8406工作面底板巷道穿层钻孔，通过CFD优化得到合理的布置参数。为有效控制开元矿9号煤层钻孔范围，进行了CFD计算。结果表明，当采用三五线孔布置时，钻孔之间的水平间距应≤2 m。阳泉矿区新井矿断层构造带地表井位布置优化表明，地表井与断层面的水平距离应<150 m。从采动卸压瓦斯抽采方面，对阳泉三矿K8205工作面卸压瓦斯输送进行CFD计算，结果表明，硬顶板悬伸长度前应采用强制放顶法在 K8205 工作面达到 25 m，以避免瓦斯溢出。从废弃采空区瓦斯抽采角度，计算了不同地表井位的地表井控范围，提出O型环裂隙带作为地表井布置的合理范围。