沿空留巷综放工作面采空区瓦斯运移规律

The Migration Law of Gas in Goaf of Fully-mechanized Mining Face with Gob-side Entry Retaining

本文结合河南某矿14211沿空留巷综放工作面实际,结合渗流力学及流体力学理论建立采空区瓦斯运移数学模型,利用FLUENT数值模拟软件模拟得出了沿空留巷综放工作面采空区瓦斯运移分布规律。结果表明:采空区瓦斯浓度沿深度方向呈增大趋势,回风侧瓦斯浓度高于进风侧,上部区域瓦斯浓度高于下部。

This thesis combine the practical situation of 14211 th fully-mechanized mining face with gob-side entry retaining and the theory of hydromechanics and fluid mechanics build the mathematical model of gas transportation in goal, use the numerical simulation software FLU- ENT simulate and find out the migration law of gas in goal of fully-mechanized mining face with gob-side entry retaining.The result shows that the gas density in gnaf incre＆se along the depth direction and the gas density in exhaust section is higher than inlet section,the gas density of upside is higher than downside.