不同风量和瓦斯条件下采空区自燃“三带”分布规律

为了研究不同风量和瓦斯条件下采空区自燃“三带”的分布规律，以新集一矿15^#煤层131303工作面为研究对象，通过建立采空区多场耦合的数学模型，并利用COMSOL软件模拟了不同通风和瓦斯条件下采空区自燃“三带”分布特征，结果表明：随着风速的增加，采空区进风侧和回风侧氧化带宽度均显著增大，进风侧与回风侧的氧化带宽度的差距变小；氧化带宽度随着瓦斯涌出强度的增大而显著减小，随着通风阻力的增加而显著增大；瓦斯涌出强度越小，氧化带宽度受通风阻力的影响越显著。

The distribution law of spontaneous combustion of

In order to explore the distribution law of spontaneous combustion of"three zones"in goaf under different ventilation volume and gas conditions,taking 131303 working face in 15#coal seam of Xinji No.1 Coal Mine as the research object,the mathematical model of multi-field coupling in goaf was established,and COMSOL software was used to simulate the distribution characteristics of spontaneous combustion of"three zones"in goaf under different ventilation and gas conditions.The results show that with the increase of the ventilation speed,the width of the oxidation zone on the air inlet side and air return side of the goaf increases significantly,the gap between the width of the oxidation zone on the air inlet side and the air return side becomes smaller;the width of oxidation zone decreases significantly with the increase of gas emission intensity and increases significantly with the increase of ventilation resistance;the smaller the intensity of gas emission,the more significant the influence of ventilation resistance on the width of oxidation zone.