【摘要】 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。更多还原

【Abstract】 The gas distribution of comprehensively mechanized caving working face XV1301 of Sihe mine was numerically simulated by employing the CFD simulation technology and analyzed by combining the actual situation of gas drainage.Studies have shown that: the high-concentration gas area of working face with paralleled double-U ventilation system is defined as a three-dimensional region from the following three directions of working face: the advancing direction: distancing from the working face by185 ~335 m,the width direction,distancing from the return-air side by 40 m,the vertical direction: distancing from the coal bed floor by 30-50 m.The definition of this area provides a theorectical basis for gas drainage in goaf.更多还原