Multifield Coupled Dynamic Simulation of Coal Oxidation and Self-Heating in Longwall Coal Mine Gob

Figure 5

Dynamic variation of porosity in the gob during the advance of the working face. (a) 10 days after the advance of the working face. (b) 20 days after the advance of the working face. (c) 40 days after the advance of the working face. (d) 60 days after the advance of the working face.

(a)

(b)

(c)

(d)