Numerical Simulation of Parameters Optimization for Goaf Gas Boreholes

Figure 6

Distributional planar graph of gas in gob with different vertical heights of ground gas extraction. (a) Horizontal distance is 45 m and vertical distance is 10 m. (b) Horizontal distance is 45 m and vertical distance is 16 m. (c) Horizontal distance is 45 m and vertical distance is 22 m.

(a)

(b)

(c)