Mechanisms of Mining Seismicity under Large Scale Exploitation with Multikey Strata

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/sv/volume-2015/313069/figures/313069.fig.001a.svgz" name="313069.fig.001a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Planar graph</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/sv/volume-2015/313069/figures/313069.fig.001b.svgz" name="313069.fig.001b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>A-A profile graph</td></tr></table>

<div>Schematic structure chart of overburden strata after two work faces exploitation: (1) adjacent gob, (2) district sublevel entry of the longwall face, (3) fracture line of the low subkey strata, (4) fracture line of the high subkey strata, (5) fracture line of the main key strata, (6) face end of the adjacent gob with uncaving top coal, and (7) small pillar between two faces 8-longwall face; (A, B, and C) block of the fractured key strata.</div>

Shock and Vibration

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Figure 1

Figure 1: Mechanisms of Mining Seismicity under Large Scale Exploitation with Multikey Strata 