Research Article
Computational Fluid Dynamics Simulation of Oxygen Seepage in Coal Mine Goaf with Gas Drainage
Table 2
Parameters of the workface and goaf.
| | Goaf size (m) | | | Section size of workface (mm) | × | | Wind volume of workface (m3/min) | | | Oxygen concentration of the wind | | | Coal seam pitch (°) | | | Strike pitch (°) | | | Section size of laneway (mm) | | | Diameter of drainage pipe 1 and pipe 2 (mm) | | | Gas drainage rate of pipe 1 (m3/h) | | | Gas drainage rate of pipe 2 (m3/h) | |
|
|
