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Surface Deformation Prediction System 4.Op 02-03-1995 <br />Profile Function Method (Hyperbolic Tangent) 15:50:00 <br />File Name --> UNTITLED <br />Case Description, <br />Golden Eagle Mine <br />Room and Pillar Subsidence @ 75k Extraction. <br />Input Data <br />Mining system ............................. Room-and-Pillar <br />Panel width ... .................................. 600.0 (ft) <br />Overburden depth .................................. 988.0 (ft) <br />Extraction thickness .............................. 7.50 (ft) <br />Percent hardrock .................................. 90.0 (g) <br />Extraction ratio ... .. ............... 75.0 (3) <br />Estimate of inflection point {I.P.)~.......... Conservative <br />Calculated Parameters <br />Panel geometry ... ....................... Supercritical <br />Maximum subsidence•(Smax) .. ................ -3.38 <br />Maximum subsidence factor (Smax/m)... ........ 0.450 <br />Offset of inflection point from rib (inby)~........ 77.6 <br />Distance of point of Smax from I.P . ............... 155.2 <br />Subsidence Distribution <br />Distance ~ Distance ~ Distance <br />from Panel Subsidence) from Panel Subsidences from Panel <br />Center ; Center ~ Center <br />(ft) (ft) ~ (ft) (ft) ( (ft) <br />0 -3.38 ~ 204 -2.06 ( 408 <br />12 -3.37 ~ 216 -1.82 ~ 420 <br />24 -3.36 ~ 228 -1.59 ~ 432 <br />36 -3.35 ~ 240 -1.36 ~ 444 <br />48 -3.34 ~ 252 -1.14 ~ 456 <br />60 -3.32 ~~ 264 -0.99 ~ 468 <br />72 -3.30 ( 276 -0.76 ~ 480 <br />84 -3.26 ~ 288 -0.61 ~ 492 <br />96 -3.22 ~ 300 -0.48 ~ 509 <br />lOB -3.17 ~ 312 -0.38 ~ 516 <br />120 -3.11 ~ 324 -0.29 ( 528 <br />132 -3.03 ~ 336 -0.23 ~ 540 <br />144 -2.92 ~ 348 -0.17 ~ 552 <br />156 -2.80 ~ 360 -0.13 ~ 564 <br />168 -2.65 I 372 -0.10 I 576 <br />(ft) <br />(ft) <br />(ft) <br />subsidence <br />(ft) <br />-0.05 <br />-0.03 <br />-0.03 <br />-0.02 <br />-0.01 <br />-0.01 <br />-0.01 <br />-0.01 <br />-0.00 <br />-0.00 <br />-0.00 <br />-0.00 <br />-0.00 <br />-0.00 <br />-0.0 <br />,~ <br />~• <br />r. <br />J <br />cc <br />cc <br />.+ <br />N <br />'~d <br />0 <br />cn <br />0 <br />c.~ <br />N <br />~- <br />0 <br />m <br />cn <br />