Treatment and Effect of Loess Metro Tunnel under Surrounding Pressure and Water Immersion Environment

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left" rowspan="2">Cycle times</td><td class="align_center" colspan="5">Elastic modulus (MPa)</td></tr><tr class="thead"><td class="align_center"><span style="width: 39.4763ptpx;"><svg height="8.85534pt" id="M42" style="vertical-align:-0.4673595pt" version="1.1" viewbox="-0.0498162 -8.38798 39.4763 8.85534" width="39.4763pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M615 290C615 392 563 448 529 448C511 448 491 441 484 434L483 425C518 400 546 349 546 273C546 158 504 46 417 46C381 46 356 77 356 142C356 184 380 293 392 334L387 340L307 323C305 288 296 228 287 188C265 94 221 52 180 52C144 52 112 89 112 171C112 278 164 372 241 430L226 454C106 394 23 288 23 155C23 40 79 -12 139 -12C184 -12 245 32 285 85C292 31 322 -12 376 -12C423 -12 470 18 501 45C570 104 615 184 615 290Z"></path></g><g transform="matrix(.013,0,0,-0.013,11.927,0)"><path d="M535 323V373H52V323H535ZM535 138V188H52V138H535Z"></path></g><g transform="matrix(.013,0,0,-0.013,23.19,0)"><path d="M241 635C89 635 35 457 35 312C35 153 89 -12 240 -12C390 -12 443 166 443 312C443 466 390 635 241 635ZM238 602C329 602 354 454 354 312C354 172 330 22 240 22C152 22 124 173 124 313S148 602 238 602Z"></path></g><g transform="matrix(.013,0,0,-0.013,29.43,0)"><path d="M594 629L561 652L159 -9L190 -32L594 629ZM194 635C92 635 49 534 49 453C49 374 92 272 193 272C295 272 338 374 338 454S295 635 194 635ZM193 605C257 605 265 504 265 453C265 405 257 302 194 302C133 302 122 403 122 454S133 605 193 605ZM567 351C465 351 421 250 421 169C421 90 465 -12 566 -12S710 90 710 170S667 351 567 351ZM566 322C628 322 637 221 637 169C637 121 628 18 567 18S494 119 494 170C494 223 506 322 566 322Z"></path></g></svg></span></td><td class="align_center"><span style="width: 39.4763ptpx;"><svg height="8.85534pt" id="M43" 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class="align_center">7.34</td><td class="align_center">4.16</td><td class="align_center">3.69</td></tr><tr><td class="align_left">4</td><td class="align_center">226.82</td><td class="align_center">24.36</td><td class="align_center">7.36</td><td class="align_center">3.84</td><td class="align_center">2.79</td></tr><tr><td class="align_left">6</td><td class="align_center">211.42</td><td class="align_center">23.76</td><td class="align_center">6.68</td><td class="align_center">3.46</td><td class="align_center">2.76</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Elastic modulus of loess with different water content and dry-wet cycle.</div>

Geofluids

tab2

Table 2

Table 2: Treatment and Effect of Loess Metro Tunnel under Surrounding Pressure and Water Immersion Environment 