2008-02-22_APPLICATION CORRESPONDENCE - C2008086 ‎(43)‎

• Permit No: C2008086
• IBM Index Class Name: Application Correspondence
• Doc Date: 2/22/2008
• Doc Name: PDEIS Appendix C Subsidence
• Media Type: D
• Archive: No

Table 10. Predicted Surface Fracture Widths Based on York Canyon Mine Measurements.
Assumes virgin ground and 11-foot mining height.
Panel Overburden Width/ Maximum Maximum Open Predicted Distance
Width Depth Depth Subsidence Tensile Fracture from from
(feet) (feet) Ratio (feet) Strain Width Centerline Ribside
(u-strain) (inches) (feet) (feet)
800 200 4.000 8.91 29000 19.8 400 0
500 1.600 8.91 11600 7.8 400 0
1000 0.800 7.49 4940 3.2 417 17
1500 0.533 4.79 2490 1.5 477 77
2000 0.400 3.21 1260 0.7 662 262
900 200 4.500 8.91 29000 19.8 450 0
500 1.800 8.91 11600 7.8 450 0
1000 0.900 7.87 5350 3.5 460 10
1500 0.600 5.39 2690 1.7 504 54
2000 0.450 3.76 1560 0.9 636 186
1000 200 5.000 8.91 29000 19.8 500 0
500 2.000 8.91 11600 7.8 500 0
1000 1.000 8.22 5420 3.5 512 12
1500 0.667 6.04 2900 1.8 537 37
2000 0.500 4.36 1790 1.0 626 126
1100 200 5.500 8.91 29000 19.8 550 0
500 2.200 8.91 11600 7.8 550 0
1000 1.100 8.42 5470 3.6 558 8
1500 0.733 6.58 2940 1.8 584 34
2000 0.550 4.85 1890 1.1 642 92
1200 200 6.000 8.91 29000 19.8 600 0
500 2.400 8.91 11600 7.8 600 0
1000 1.200 8.55 5560 3.6 608 8
1500 0.800 7.13 3140 2.0 624 24
2000 0.600 5.39 2020 1.2 674 74
NOTE: Single panel subsidence analysis
C-33
DBMS 325