综放工作面上隅角瓦斯治理数值模拟

Numerical Simulation of Gas Control in Upper Corner at Fully Mechanized Caving Face

对比分析综放工作面U形通风和Y形通风对于治理工作面上隅角瓦斯的优缺点,利用Fluent对3D模型进行数值模拟,无论Y形还是U形,沿采空区走向方向瓦斯浓度逐渐增大,但是U形较Y形来说,采空区瓦斯浓度较大;上隅角瓦斯浓度超出允许范围;Y形通风能更好解决上隅角瓦斯积聚问题。

Analysis of fully-mechanized caving U-type ventilation and Y- type ventilation for the advantages and disadvantages to control the upper corner gas management problem. Use the Fluent software to run the numerical simulation of 3D model of the Y-type and U-type. The conclusion is that: along the goaf towards the direction the gas concentration increases gradually, but U-type compared with Y-type, the concentration of goaf is bigger; the gas concentration in upper corner is beyond the scope allowed; Y-type ventilation can solve the problem of gas accumulation at upper corner better.