Formation Mechanism and Reduction Technology of Mining-Induced Fissures in Shallow Thick Coal Seam Mining

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/sv/volume-2017/1980817/figures/1980817.fig.002a.svgz" name="1980817.fig.002a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Step-type fissure</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/sv/volume-2017/1980817/figures/1980817.fig.002b.svgz" name="1980817.fig.002b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Collapse-type fissure</td></tr></table>

<div>Vegetation growth after generation of nondamaging surface fissures.</div>

Shock and Vibration

fig2

Figure 2

Figure 2: Formation Mechanism and Reduction Technology of Mining-Induced Fissures in Shallow Thick Coal Seam Mining 