Research on the Hard-Rock Breaking Mechanism of Hydraulic Drilling Impact Tunneling

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/mpe/volume-2015/153648/figures/153648.fig.0010a.svgz" name="153648.fig.0010a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>The Von Mises equivalent stress curves</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/mpe/volume-2015/153648/figures/153648.fig.0010b.svgz" name="153648.fig.0010b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>The 1st principal stress curves</td></tr><tr class="fig-image" id="c"><td><object data="https://static.hindawi.com/articles/mpe/volume-2015/153648/figures/153648.fig.0010c.svgz" name="153648.fig.0010c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>The 3rd principal stress curves</td></tr></table>

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Mathematical Problems in Engineering

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Figure 10

Figure 10: Research on the Hard-Rock Breaking Mechanism of Hydraulic Drilling Impact Tunneling 