Study on the Damage Model of Coal Rock Caused by Hydraulic Pressure and Electrical Impulse in Borehole

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/6627242/figures/6627242.fig.005a.svgz" name="6627242.fig.005a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Effective stress at different voltages</td></tr><tr class="fig-image" id="b"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/6627242/figures/6627242.fig.005b.svgz" name="6627242.fig.005b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Damage variable at different voltages</td></tr></table>

<div>Effective stress and damage variable at 3 MPa hydrostatic pressure and different voltages.</div>

Geofluids

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Figure 5

Figure 5: Study on the Damage Model of Coal Rock Caused by Hydraulic Pressure and Electrical Impulse in Borehole 