高突矿井瓦斯抽采是治理工作面隅角瓦斯超限的重要手段，各抽采方式布置层位不同，其抽采效果存在明显差异，研究协同抽采各抽采方式的最优布置层位具有重要意义。为提高高抽巷抽采效率实现瓦斯精准抽采，基于“椭抛带”理论，运用Fluent数值模拟软件对协同抽采各抽采方式的布置层位进行模拟研究，分析各布置条件下工作面隅角瓦斯浓度，确定最优布置层位。模拟结果表明协同抽采中各抽采方式布置层位为：高抽巷最优平距25 m，最优垂距30 m，定向长钻孔最优平距在10～20 m，最优垂距在11～21 m。通过对单一抽采与协同抽采进行对比分析，协同抽采中回风侧快速提升区跨度明显增大，使得回风侧经上隅角涌入工作面的瓦斯强度降低，隅角瓦斯得到进一步控制。协同抽采较好解决了工作面回风侧风流引起的相对负压造成上隅角瓦斯大量聚集的问题，隅角涡流所引起的瓦斯聚集现象在长钻孔抽采下逐步消失。优化后的布置参数进行现场应用后，试验工作面在生产期间高抽巷平均抽采纯量为64.79 m3/min，占瓦斯涌出量的79.91%，定向长钻孔平均抽采纯量为9.68 m3/min，减小了风排瓦斯的压力，上隅角、回风巷最大瓦斯体积分数均控制在1%以内，试验工作面瓦斯超限问题得到有效治理，保证了生产工作安全高效进行。

Gas drainage in high outburst mine is an important means to control the gas overrun in the corner of the working face. The layout levels of each drainage mode are different, and there are obvious differences in the drainage effect. It is of great significance to study the optimal layout levels of each drainage mode of cooperation drainage. To improve the extraction efficiency of high extraction roadway and realize accurate gas extraction, based on the “elliptic paraboloid zone” theory, the layout horizon of each extraction mode of collaborative extraction is simulated and studied by using Fluent numerical simulation software, the gas concentration in the corner of the working face under each layout condition is analyzed, and the optimal layout horizon is determined. The simulation results show that the layout horizon of each extraction mode in collaborative extraction was: the optimal horizontal distance of high extraction roadway was 25 m, the optimal vertical distance was 30 m, the optimal horizontal distance of directional long drilling was 10-20 m, and the optimal vertical distance was 11-21 m. Through the comparative analysis of single extraction and collaborative extraction, in collaborative extraction, the span of the rapid lift zone area on the return air side is significantly increased, which reduces the gas intensity of the return air side flowing into the working face through the upper corner, and the corner gas was further controlled. Cooperative drainage better solves the problem of large accumulation of gas in the upper corner caused by the relative negative pressure caused by the return side wind flow of the working face, and the phenomenon of gas accumulation caused by the corner vortex gradually disappears under long borehole drainage. After the field application of the optimized layout parameters, the average net amount of gas extraction in the high drainage roadway during the production period of the test face is 64.79 m3/min, accounting for 79.91% of the gas emission, and the average net amount of gas extraction in the directional long drilling hole is 9.68 m3/min, which reduces the pressure of air exhaust gas, the maximum gas concentration in the upper corner and return air roadway is controlled within 1%, and the problem of gas overrun in the test face has been effectively controlled, which ensures the safe and efficient production.