Variation in the Permeability of Intact and Fractured Rocks due to Transient Disturbances in Axial Stress or Pore Pressure

Figure 6

Variation in permeability in each hydrostatic stress state (Hold-1, Hold-2, Hold-3, and Hold-4) at the time of axial stress disturbance for the entire experiment: (a) AS-KCS2, (b) AS-KCS5, (c) AS-KCS8, and (d) AS-KCS9. Dist. 1 and Dist. 2 are the disturbances in prefailure and postfailure.

(a)

(b)

(c)

(d)