Study on Layered-Backfill-Based Water Protection Technology of Thick Coal Seam in the Ecologically Fragile Mining Area in Western China

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2022/3505176/figures/3505176.fig.0012a.svgz" name="3505176.fig.0012a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>Compaction process of single-filling support for gangue discharge</td></tr><tr class="fig-image" id="b"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2022/3505176/figures/3505176.fig.0012b.svgz" name="3505176.fig.0012b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Multisupport synergistic filling process</td></tr></table>

<div>Coal mining filling parallel and group filling process.</div>

Geofluids

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Figure 12

Figure 12: Study on Layered-Backfill-Based Water Protection Technology of Thick Coal Seam in the Ecologically Fragile Mining Area in Western China 