Instability Mode and Control Technology of Surrounding Rock in Composite Roof Coal Roadway under Multiple Dynamic Pressure Disturbances

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437 529 423C504 407 475 389 446 366C425 418 382 449 334 449C303 449 279 437 253 421C222 403 201 385 180 371V452C135 432 85 419 41 411V388C99 379 102 374 102 310V103C102 38 93 32 27 26V0H238V26C189 32 180 38 180 103V338C210 363 250 390 289 390C351 390 377 348 377 275V103C377 37 368 32 306 26V0H520V26C465 32 456 38 456 101V296C456 314 455 326 453 338C491 369 529 390 565 390C628 390 653 345 653 274V107C653 36 642 32 583 26V0H797Z"></path></g></svg></td></tr><tr class="fig-image" id="h"><td><object data="https://static-preview.hindawi.com/articles/geofluids/volume-2022/8694325/figures/8694325.fig.004h.svgz" name="8694325.fig.004h" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(h) </b>Different lateral pressure coefficient</td></tr></table>

<div>Roof subsidence of compound roof coal roadway under different influencing factors.</div>

Geofluids

fig4

Figure 4

Figure 4: Instability Mode and Control Technology of Surrounding Rock in Composite Roof Coal Roadway under Multiple Dynamic Pressure Disturbances 