Engineering Characteristics and Application Analysis of Red Sandstone in the Lanzhou Metro

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Category</td><td class="align_center">Disintegration speed</td><td class="align_center">Engineering issues</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">I</td><td class="align_center">Rapid disintegration within 1 h</td><td class="align_center">Serious</td></tr><tr><td class="align_left">II</td><td class="align_center">Partial disintegration within 1-24 h</td><td class="align_center">Slight</td></tr><tr><td class="align_left">III</td><td class="align_center">Slow disintegration</td><td class="align_center">Basically none</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Preliminary classification of red sandstone.</div>

Geofluids

tab1

Table 1

Table 1: Engineering Characteristics and Application Analysis of Red Sandstone in the Lanzhou Metro 