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APPENDIX <br />• Prediction Examples <br />1. Lon~aall panel with riKid Qateroad pillars. <br />Panel Width 640 ft (195m) <br />Mining Height = 8 ft <br />Depth = 1200 ft (366m) <br />Panel width/depth subsidence correction <br />(Figure 5) <br />Six = 0.53 (8) = 4.24 ft <br />(Note: No connection to width/depth ratio.) <br />Virgin ground correction <br />Six = 0.9 (4.24) = 3.82 ft <br />Predicted maximum surface strains <br />(Figure 8 and Table 11) <br />• Tensile (panel width/depth = 640/1200 = 0,53) <br />0,53 - 0,50 = 0.03 <br />0.80 - 0.50 = 0.30 <br />0.03/0,30 = 0.10 <br />0,10 (0.80-0.65) = 0.015 <br />0.80 - 0,15 = 0.785 <br />+E = 0.785 (SAX/Depth) 106 = 0.785 (3.82/1200) 106 <br />+E = 2500 ~E predicted maximum tensile strain <br />Location of predicted maximum tensile strain <br />(Figure 7 and Table 10) <br />(Panel width/depth ratio 0.53) <br />Distance from panel centerline <br />0.32 (1200) = 384 ft <br />Distance from panel ribside <br />Panel width 640 ft <br />1/2 Panel width = 320 ft' <br />384 - 320 = 64 ft outside panel <br />Compressive <br />• 0.10 (1.35 - 0.70) = 0.065 <br />1.35 - 0.065 = 1.285 <br />-E = 1.285 (3.82/1200) 106 = 4090 wf <br />Predicted maximum tensile strain <br />