Study on the Permeability Evolution and Its Formation Mechanism of Xiaojihan Aquifer Coal Seam under Plastic Flow

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2020/2147503/figures/2147503.fig.0012a.svgz" name="2147503.fig.0012a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Xiaojihan coal mine</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2020/2147503/figures/2147503.fig.0012b.svgz" name="2147503.fig.0012b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Longde coal mine</td></tr></table>

<div>The stress-strain curves of two kinds of specimens under confining pressure of 2 MPa.</div>

Geofluids

fig12

Figure 12

Figure 12: Study on the Permeability Evolution and Its Formation Mechanism of Xiaojihan Aquifer Coal Seam under Plastic Flow 