Research on Construction Optimization of Three-Connected-Arch Hydraulic Underground Cavities Considering Creep Property

<table class="table-group" width="800px"><tr class="fig-image" id="a"><td><img alt="967975.fig.0011a" src="https://static.hindawi.com/articles/mpe/volume-2014/967975/figures/967975.fig.0011a.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(a) </b>Minimum principle stress</td></tr></table></td></tr><tr class="fig-image" id="b"><td><img alt="967975.fig.0011b" src="https://static.hindawi.com/articles/mpe/volume-2014/967975/figures/967975.fig.0011b.jpg"/></td></tr><tr class="fig-caption"><td align="center"><table><tr><td><b>(b) </b>Maximum principle stress</td></tr></table></td></tr></table>

<table>Surrounding rock principle stress contour map of middle cavity method.</table>

Mathematical Problems in Engineering

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Figure 11

Figure 11: Research on Construction Optimization of Three-Connected-Arch Hydraulic Underground Cavities Considering Creep Property 