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

<div>Microscopic images of the Kushiro Cretaceous sandstone. Qz: quartz (<i>ϕ</i> ≤ 0.2–0.4 mm), Pl: plagioclases (<i>ϕ</i> ≤ 0.2 mm), Mx: matrix (Sm–Il: smectite–illite (silt-size mineral pieces)), Kf: potash feldspar (<i>ϕ</i> ≤ 0.2 mm), Bi: biotite (<i>ϕ</i> ≤ 0.2–0.5 mm), Hb: ordinary amphibole (<i>ϕ</i> ≤ 0.15 mm), AN: andesite (<i>ϕ</i> ≤ 0.2 mm), TMS: transformed mudstone (<i>ϕ</i> ≤ 0.25 mm), Mc: mica, and Chl: chlorite.</div>

Advances in Civil Engineering

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Figure 1

Figure 1: Variation in the Permeability of Intact and Fractured Rocks due to Transient Disturbances in Axial Stress or Pore Pressure 