Analytical Analysis and Field Observation of Break Line in the Main Roof over the Goaf Edge of Longwall Coal Mines

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/mpe/volume-2016/4720867/figures/4720867.fig.001a.svgz" name="4720867.fig.001a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Arc-triangle section of the lateral main roof after breakage</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/mpe/volume-2016/4720867/figures/4720867.fig.001b.svgz" name="4720867.fig.001b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>The lateral hinged structure over the EDG (section I-I in Figure <a href="../fig1/#a">1(a)</a>)</td></tr></table>

<div>Schematic arc-top structure above GDE.</div>

Mathematical Problems in Engineering

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Figure 1

Figure 1: Analytical Analysis and Field Observation of Break Line in the Main Roof over the Goaf Edge of Longwall Coal Mines 