Research on the Prediction Model of Shield Advancement Rate in Sandy Cobble Ground of Beijing

<table class="table-group" id="tab7"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left">Time group</td><td class="align_center">Short advancement time</td><td class="align_center">Medium advancement time</td><td class="align_center">Long advancement time</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">Range (minutes)</td><td class="align_center">0∼30</td><td class="align_center">30∼57</td><td class="align_center">57∼84</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Advancement time grouping table.</div>

Advances in Civil Engineering

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Table 7

Table 7: Research on the Prediction Model of Shield Advancement Rate in Sandy Cobble Ground of Beijing 