Multifactor Evaluation of Multiple Service Support and Optimization of Working Resistance of New Support Based on Dynamic Pressure

<table class="table-group" id="tab6"><tr><td><table class="table"><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr class="thead"><td class="align_left">Resistance of support (kN)</td><td class="align_center"><i>p</i> = 10500</td><td class="align_center"><i>p'</i> = 9300</td><td class="align_center"><svg height="13.4746pt" id="M32" style="vertical-align:-3.4295pt" version="1.1" viewbox="-0.0498162 -10.0451 7.83752 13.4746" width="7.83752pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><rect height="0.65243" width="7.73789" x="0" y="-9.34288"></rect><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M570 304C570 398 525 448 414 448C385 448 343 445 312 434L329 511L321 518C297 504 262 482 244 460L233 411C195 397 159 381 128 358L135 332C160 347 189 360 224 373L111 -147C97 -210 84 -218 17 -231L13 -257L254 -247L259 -218L233 -216C183 -212 177 -202 189 -142L218 -1C238 -10 266 -12 283 -12C351 3 429 48 483 105C543 168 570 242 570 304ZM482 289C482 161 380 33 304 33C278 33 248 51 233 69L303 396C326 400 352 403 369 403C428 403 482 380 482 289Z"></path></g></svg> = 9412</td><td class="align_center"><svg height="13.9587pt" id="M33" style="vertical-align:-3.9136pt" version="1.1" viewbox="-0.0498162 -10.0451 12.784 13.9587" width="12.784pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><rect height="0.65243" width="7.73789" x="0" y="-9.34288"></rect><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M570 304C570 398 525 448 414 448C385 448 343 445 312 434L329 511L321 518C297 504 262 482 244 460L233 411C195 397 159 381 128 358L135 332C160 347 189 360 224 373L111 -147C97 -210 84 -218 17 -231L13 -257L254 -247L259 -218L233 -216C183 -212 177 -202 189 -142L218 -1C238 -10 266 -12 283 -12C351 3 429 48 483 105C543 168 570 242 570 304ZM482 289C482 161 380 33 304 33C278 33 248 51 233 69L303 396C326 400 352 403 369 403C428 403 482 380 482 289Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,7.738,3.864)"><path d="M389 0V32C297 38 291 46 291 118V635C234 613 175 595 109 583V556L161 554C203 552 207 547 207 497V118C207 46 201 38 110 32V0H389Z"></path></g></svg> = 10327</td><td class="align_center"><svg height="13.9587pt" id="M34" style="vertical-align:-3.9136pt" version="1.1" viewbox="-0.0498162 -10.0451 12.784 13.9587" width="12.784pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><rect height="0.65243" width="7.73789" x="0" y="-9.34288"></rect><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M570 304C570 398 525 448 414 448C385 448 343 445 312 434L329 511L321 518C297 504 262 482 244 460L233 411C195 397 159 381 128 358L135 332C160 347 189 360 224 373L111 -147C97 -210 84 -218 17 -231L13 -257L254 -247L259 -218L233 -216C183 -212 177 -202 189 -142L218 -1C238 -10 266 -12 283 -12C351 3 429 48 483 105C543 168 570 242 570 304ZM482 289C482 161 380 33 304 33C278 33 248 51 233 69L303 396C326 400 352 403 369 403C428 403 482 380 482 289Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,7.738,3.864)"><path d="M414 144C384 79 371 75 317 75H135L276 221C367 316 408 376 408 465C408 570 327 635 237 635C179 635 131 609 100 575L42 494L67 471C94 510 138 565 205 565C277 565 321 517 321 435C321 348 258 270 195 195C146 137 88 81 33 26V0H411C423 44 433 88 446 135L414 144Z"></path></g></svg> = 12157</td></tr><tr><td class="thead-hr" colspan="6"><hr/></td></tr><tr><td class="align_left">Roof subsidence Δ<i>h</i><sub><i>i</i></sub> (mm)</td><td class="align_center">Δ<i>h</i><sub>1</sub> = 219</td><td class="align_center">Δ<i>h</i><sub>2</sub> = 290</td><td class="align_center">Δ<i>h</i><sub>3</sub> = 283</td><td class="align_center">Δ<i>h</i><sub>4</sub> = 227</td><td class="align_center">Δ<i>h</i><sub>5</sub> = 163</td></tr><tr><td class="align_left">Roof control effect</td><td class="align_center">Good</td><td class="align_center">Medium</td><td class="align_center">Medium</td><td class="align_center">Good</td><td class="align_center">Good</td></tr><tr class="table-tr"><td colspan="6"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The roof control level corresponding to 5 working resistances of support.</div>

Shock and Vibration

tab6

Table 6

Table 6: Multifactor Evaluation of Multiple Service Support and Optimization of Working Resistance of New Support Based on Dynamic Pressure 