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利用CFD模拟技术对寺河矿XV1301综采工作面采空区瓦斯分布进行数值模拟,并结合该矿瓦斯抽采实际情况进行分析。研究表明:工作面采用并列双U形通风采空区高浓度瓦斯区域为沿工作面推进方向距离工作面185~335 m,沿工作面宽度方向距离回风侧40 m内,沿煤层垂直方向距离煤层底板高度为30~50 m。这一区域的确定为采空区瓦斯抽采提供了一定的理论依据。
CFD simulation technology is used to simulate the gas distribution in the mined area of XV1301 fully mechanized coal mining face of Sihe Mine and the actual situation of gas drainage is analyzed. The results show that the high gas concentration in the double U-shaped ventilation gob of the working face is 185 ~ 335 m along the working face in the direction of advance, 40 m in the width direction of the working face within 40 m on the return air side, Seam floor height of 30 ~ 50 m. The determination of this area provides some theoretical basis for gas drainage in goaf.