Research Article

Numerical Simulation of Seepage-Heat-Solid Coupling of Gas Seepage in Prepumped Boreholes under Electrothermal High Temperature Field

Figure 5

Isosurface map of coal permeability at different heating temperatures.
(a) 200°C heating hole
(b) 400°C heating hole
(c) 600°C heating hole
(d) 800°C heating hole