Integrated Treatment Technology of Storage-Mining Inclined Goaf under Expressway

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Strata</td><td class="align_center">Ultrasonic wave speed before grouting (m/s)</td><td class="align_center">Ultrasonic wave speed after grouting (m/s)</td><td class="align_center">Growth value (m/s)</td><td class="align_center">Growth rate %</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">Highly weathered bedrock</td><td class="align_center">2377</td><td class="align_center">2673</td><td class="align_center">296</td><td class="align_center">12.5</td></tr><tr><td class="align_left">Coal</td><td class="align_center">1901</td><td class="align_center">2350</td><td class="align_center">449</td><td class="align_center">23.6</td></tr><tr><td class="align_left">Middle weathered bedrock</td><td class="align_center">2702</td><td class="align_center">2865</td><td class="align_center">163</td><td class="align_center">6.0</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Summary of ultrasonic testing results.</div>

Advances in Civil Engineering

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Table 4

Table 4: Integrated Treatment Technology of Storage-Mining Inclined Goaf under Expressway 