Characteristics of Stratum Structure and Fracture Evolution in Stratified Mining of Shallow Buried High-Gas-Thick Coal Seam by Similarity Simulation

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/5555451/figures/5555451.fig.0012a.svgz" name="5555451.fig.0012a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Characteristics of mining fissures after the first layer excavation of section 010202</td></tr><tr class="fig-image" id="b"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/5555451/figures/5555451.fig.0012b.svgz" name="5555451.fig.0012b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Characteristics of mining fissures after the second layer excavation of section 010202</td></tr><tr class="fig-image" id="c"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/5555451/figures/5555451.fig.0012c.svgz" name="5555451.fig.0012c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>Characteristics of mining fissures after the third layer excavation of section 010202</td></tr><tr class="fig-image" id="d"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2021/5555451/figures/5555451.fig.0012d.svgz" name="5555451.fig.0012d" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(d) </b>Characteristics of mining fissures after the first layer excavation of section 010203</td></tr></table>

<div>Fracture characteristics of overburden stratum in stratified coal seam mining.</div>

Geofluids

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Figure 12

Figure 12: Characteristics of Stratum Structure and Fracture Evolution in Stratified Mining of Shallow Buried High-Gas-Thick Coal Seam by Similarity Simulation 

Figure 12 | Characteristics of Stratum Structure and Fracture Evolution in Stratified Mining of Shallow Buried High-Gas-Thick Coal Seam by Similarity Simulation 