2022-09-28_REVISION - M1998105

• Permit No: M1998105
• IBM Index Class Name: Revision
• Doc Date: 9/28/2022
• Doc Name: Adequacy Review - Preliminary
• From: Lewicki & Associates
• To: DRMS
• Type & Sequence: AM1
• Email Name: RDZ
• Email Name: MAC
• Media Type: D
• Archive: No

Parameter descriptor: XL XR R
Range of variation: 32.00 47.38 15.00
Trial positions within range: 30 15 15
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RESULTS: Analysis 4 - Final Reclamation
Bishop Simplified Method of Analysis - Circular Failure Surface
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Critical Failure Surface Search using Multiple Circle Generation Techniques
Factor of Safety for initial failure surface approximation: 2.413
There were: 5746 successful analyses from a total of 6751 trial surfaces
1005 analyses terminated due to unacceptable geometry
Critical (minimum) Factor of Safety: 1.91
Results Summary - Lowest 99 Factor of Safety circles
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Circle X-Left Y-Left X-Right Y-Right X-Centre Y-Centre Radius FoS
1 155.17 4953.26 207.92 4936.80 282.66 5268.99 340.50 1.907 <-- Critical Surface
2 155.17 4953.26 207.92 4936.80 282.98 5270.02 341.57 1.907
3 155.17 4953.26 207.92 4936.80 283.30 5271.05 342.64 1.908
4 155.17 4953.26 207.92 4936.80 283.63 5272.07 343.71 1.908
5 155.17 4953.26 207.92 4936.80 283.95 5273.10 344.79 1.909
6 155.17 4953.26 207.92 4936.80 284.27 5274.12 345.86 1.909
7 155.17 4953.26 207.92 4936.80 284.59 5275.15 346.93 1.910
8 155.17 4953.26 207.92 4936.80 284.91 5276.18 348.00 1.910
9 155.17 4953.26 207.92 4936.80 285.23 5277.20 349.07 1.910
10 155.17 4953.26 207.92 4936.80 285.55 5278.23 350.14 1.911
11 155.17 4953.26 207.92 4936.80 285.87 5279.25 351.21 1.912
12 155.17 4953.26 207.92 4936.80 286.19 5280.28 352.29 1.912
13 155.17 4953.26 207.92 4936.80 286.51 5281.31 353.36 1.913
14 155.17 4953.26 207.92 4936.80 286.83 5282.33 354.43 1.913
15 155.17 4953.26 207.92 4936.80 287.15 5283.36 355.50 1.914
16 156.28 4953.27 207.92 4936.80 285.22 5268.41 340.50 1.916
17 156.28 4953.27 207.92 4936.80 285.55 5269.43 341.57 1.916
18 156.28 4953.27 207.92 4936.80 285.88 5270.46 342.64 1.916
19 154.07 4953.26 207.92 4936.80 280.18 5269.54 340.50 1.917
20 156.28 4953.27 207.92 4936.80 286.20 5271.48 343.71 1.917
21 156.28 4953.27 207.92 4936.80 286.53 5272.50 344.79 1.917
22 154.07 4953.26 207.92 4936.80 280.49 5270.57 341.57 1.917
23 156.28 4953.27 207.92 4936.80 286.86 5273.53 345.86 1.918
24 154.07 4953.26 207.92 4936.80 280.81 5271.60 342.64 1.918
25 156.28 4953.27 207.92 4936.80 287.18 5274.55 346.93 1.918
26 156.28 4953.27 207.92 4936.80 287.51 5275.58 348.00 1.918
27 154.07 4953.26 207.92 4936.80 281.12 5272.63 343.71 1.919
28 156.28 4953.27 207.92 4936.80 287.83 5276.60 349.07 1.919