Effect of Strain-Dependent Hydraulic Conductivity of Coal Rock on Groundwater Inrush in Mining

Figure 12

Contours of the hydraulic conductivity ratio () using the modified numerical model with 100 m length working face for (a) strike section, (b) - section (the fine sandstone of 17 m above the coal seam), (c) - section (the fine sandstone of 7 m above the coal seam), (d) - section (the siltstone of 4 m below the coal seam), and (e) - section (the fine sandstone of 14 m below the coal seam).

(a)

(b)

(c)

(d)

(e)