Determining the Seepage Stability of Fractured Coal Rock in the Karst Collapse Pillar

Figure 6

Relationship between effective stress and permeability of samples. (a) n = 0.1; n = 0.2. (b) n = 0.3; n = 0.4. (c) n = 0.5; n = 0.6. (d). n = 0.7; n = 0.8. (e) n = 0.9; n = 1.0.

(a)

(b)

(c)

(d)

(e)