Research Article

Goaf Gas Control Improvement by Optimizing the Adjacent Roadway Large-Diameter Boreholes

Figure 7

Distribution of spontaneous combustion zone in goaf. (a) Oxygen distribution without pumping. (b) Oxygen distribution (x = 10 m,  = 6 m·s−1). (c) Oxygen distribution (x = 20 m,  = 6 m·s−1).
(a)
(b)
(c)