Research on Shield Tunnelling Parameters Correlation in Composite Strata

<div><svg height="6.37608pt" id="M17" style="vertical-align:-0.2324901pt" version="1.1" viewbox="-0.0498162 -6.14359 6.02377 6.37608" width="6.02377pt" 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="M213 67C239 136 257 225 255 300C253 353 242 447 164 447C112 447 54 389 41 319L67 309C90 362 117 377 134 377C184 377 189 277 190 239C193 153 164 43 146 -12H176C278 73 450 253 450 390C450 439 410 463 396 463C384 463 380 459 382 449C385 440 389 415 389 402C389 284 312 146 216 67H213Z"></path></g></svg> vs. <i>M</i> curve in full section of harder rock strata.</div>

Advances in Materials Science and Engineering

fig18

Figure 18

Figure 18: Research on Shield Tunnelling Parameters Correlation in Composite Strata 