Road Tunnel Axial Fan Performance In Situ Test: Taking Qinling Zhongnan Mountain Highway Tunnel as an Example

<table class="fixed-width table-group" id="tab2"><tr><td><table class="table"><colgroup><col style="width:11.49em"/><col style="width:3.40em"/><col style="width:3.38em"/><col style="width:3.40em"/><col style="width:3.40em"/><col style="width:3.38em"/><col style="width:3.41em"/></colgroup><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td class="align_left">Measuring lines or points</td><td class="align_center">1</td><td class="align_center">2</td><td class="align_center">3</td><td class="align_center">4</td><td class="align_center">5</td><td class="align_center">6</td></tr><tr><td class="align_left" colspan="7"><hr/></td></tr><tr><td class="align_left"><svg height="8.72483pt" id="M60" style="vertical-align:-3.181499pt" version="1.1" viewbox="-0.0498162 -5.54333 9.26865 8.72483" width="9.26865pt" 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="M474 0V26C414 34 401 43 364 100L267 248C300 297 324 332 345 358C381 400 394 405 455 411V437H272V411C316 406 323 401 305 370C287 337 267 306 247 276L188 369C169 397 173 405 215 411V437H16V411C71 404 83 396 114 348L201 212C171 167 144 127 116 92C77 42 66 34 4 26V0H190V26C139 34 136 43 156 77C175 113 198 150 220 183L294 66C311 39 302 31 260 26V0H474Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,6.136,3.132)"><path d="M138 535C169 535 191 560 191 589C191 620 168 644 139 644S85 620 85 589C85 560 110 535 138 535ZM257 0V30C192 35 185 43 185 109V453C142 435 94 422 40 414V386C101 378 104 372 104 311V109C104 41 97 35 33 30V0H257Z"></path></g></svg>/L</td><td class="align_center">0.075</td><td class="align_center">0.235</td><td class="align_center">0.437</td><td class="align_center">0.563</td><td class="align_center">0.765</td><td class="align_center">0.925</td></tr><tr><td class="align_left" colspan="7"><hr/></td></tr><tr><td class="align_left"><span style="width: 24.4531ptpx;"><svg height="12.6721pt" id="M61" style="vertical-align:-3.38377pt" version="1.1" viewbox="-0.0498162 -9.28833 24.4531 12.6721" width="24.4531pt" 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="M478 437H297V411C355 404 361 392 349 355C329 292 285 174 257 106L167 356C153 394 158 404 205 411L204 437H2V411C57 404 66 391 88 336C117 265 162 144 202 30C208 13 209 0 204 -15C199 -28 191 -49 173 -84C149 -128 130 -153 98 -172C81 -184 73 -193 73 -209C73 -233 101 -257 129 -257C143 -257 156 -252 161 -232C175 -179 197 -122 264 38C333 203 364 286 390 339C417 395 425 403 478 411V437Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,5.967,3.132)"><path d="M138 535C169 535 191 560 191 589C191 620 168 644 139 644S85 620 85 589C85 560 110 535 138 535ZM257 0V30C192 35 185 43 185 109V453C142 435 94 422 40 414V386C101 378 104 372 104 311V109C104 41 97 35 33 30V0H257Z"></path></g><g transform="matrix(.013,0,0,-0.013,8.977,0)"><path d="M368 703H309L44 -163H104L368 703Z"></path></g><g transform="matrix(.013,0,0,-0.013,14.338,0)"><path d="M513 0V26C455 31 447 37 447 103V278C447 398 390 449 309 449C255 449 202 412 166 376V712C127 700 67 684 19 677V653C85 647 87 643 87 580V103C87 37 79 31 19 26L18 0H231V26C171 32 166 39 166 103V341C194 373 232 392 270 392C337 392 368 351 368 269V103C368 38 360 32 302 26V0H513Z"></path></g><g transform="matrix(.0091,0,0,-0.0091,21.28,3.132)"><path d="M138 535C169 535 191 560 191 589C191 620 168 644 139 644S85 620 85 589C85 560 110 535 138 535ZM257 0V30C192 35 185 43 185 109V453C142 435 94 422 40 414V386C101 378 104 372 104 311V109C104 41 97 35 33 30V0H257Z"></path></g></svg></span></td><td class="align_center">0.061</td><td class="align_center">0.235</td><td class="align_center">0.437</td><td class="align_center">0.563</td><td class="align_center">0.765</td><td class="align_center">0.939</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Specific test line and point distribution according to Tchebycheff method.</div>

Mathematical Problems in Engineering

tab2

Table 2

Table 2: Road Tunnel Axial Fan Performance In Situ Test: Taking Qinling Zhongnan Mountain Highway Tunnel as an Example 