2022-07-13_REVISION - M2005066 ‎(3)‎

• Permit No: M2005066
• IBM Index Class Name: Revision
• Doc Date: 7/13/2022
• Doc Name: Slope Stability Analysis
• From: Oldcastle Material Southwest Group
• To: DRMS
• Type & Sequence: SO2
• Email Name: ECS
• Email Name: MAC
• Email Name: SMS
• Email Name: AWA
• Media Type: D
• Archive: No

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RESULTS: Analysis 2 - Mining Slope (2H:1V)
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: 2.039
There were: 501 successful analyses from a total of 501 trial surfaces
Critical (minimum) Factor of Safety: 1.39
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
1 201.00 4949.50 255.00 4922.50 283.63 5047.26 128.00 1.388 <-- Critical Surface
2 201.00 4949.50 255.00 4922.50 283.14 5046.29 126.95 1.388
3 201.00 4949.50 255.00 4922.50 282.66 5045.32 125.89 1.389
4 201.00 4949.50 255.00 4922.50 282.17 5044.35 124.84 1.390
5 201.00 4949.50 255.00 4922.50 281.69 5043.38 123.79 1.390
6 201.00 4949.50 255.00 4922.50 281.20 5042.41 122.74 1.391
7 201.00 4949.50 255.00 4922.50 280.72 5041.44 121.68 1.392
8 201.00 4949.50 255.00 4922.50 280.23 5040.46 120.63 1.393
9 201.00 4949.50 255.00 4922.50 279.75 5039.49 119.58 1.393
10 199.17 4950.00 255.00 4922.50 281.94 5047.63 128.00 1.394
11 201.00 4949.50 255.00 4922.50 279.26 5038.52 118.53 1.394
12 199.17 4950.00 255.00 4922.50 281.46 5046.66 126.95 1.395
13 201.00 4949.50 255.00 4922.50 278.77 5037.54 117.47 1.395
14 199.17 4950.00 255.00 4922.50 280.98 5045.68 125.89 1.396
15 201.00 4949.50 255.00 4922.50 278.28 5036.57 116.42 1.396
16 199.17 4950.00 255.00 4922.50 280.50 5044.71 124.84 1.396
17 201.00 4949.50 255.00 4922.50 277.80 5035.59 115.37 1.397
18 199.17 4950.00 255.00 4922.50 280.02 5043.73 123.79 1.397
19 199.17 4950.00 255.00 4922.50 279.54 5042.76 122.74 1.398
20 201.00 4949.50 255.00 4922.50 277.31 5034.62 114.32 1.398
21 199.17 4950.00 255.00 4922.50 279.06 5041.78 121.68 1.399
22 201.00 4949.50 255.00 4922.50 276.82 5033.64 113.26 1.399
23 199.17 4950.00 255.00 4922.50 278.58 5040.80 120.63 1.399
24 201.00 4949.50 255.00 4922.50 276.33 5032.66 112.21 1.400
25 199.17 4950.00 255.00 4922.50 278.10 5039.83 119.58 1.400
26 201.00 4949.50 255.00 4922.50 275.84 5031.69 111.16 1.401
27 199.17 4950.00 255.00 4922.50 277.62 5038.85 118.53 1.401
28 201.00 4949.50 255.00 4922.50 275.35 5030.71 110.11 1.402
29 199.17 4950.00 255.00 4922.50 277.13 5037.87 117.47 1.402
30 201.00 4949.50 255.00 4922.50 274.86 5029.73 109.05 1.403
31 199.17 4950.00 255.00 4922.50 276.65 5036.89 116.42 1.403
32 201.00 4949.50 255.00 4922.50 274.37 5028.75 108.00 1.404
33 199.17 4950.00 255.00 4922.50 276.17 5035.91 115.37 1.404
34 199.17 4950.00 255.00 4922.50 275.69 5034.93 114.32 1.405
35 199.17 4950.00 255.00 4922.50 275.20 5033.95 113.26 1.406
36 199.17 4950.00 255.00 4922.50 274.72 5032.96 112.21 1.407
37 199.17 4950.00 255.00 4922.50 274.23 5031.98 111.16 1.408
38 199.17 4950.00 255.00 4922.50 273.75 5031.00 110.11 1.409
39 199.17 4950.00 255.00 4922.50 273.26 5030.01 109.05 1.411
40 199.17 4950.00 255.00 4922.50 272.78 5029.03 108.00 1.412
41 197.33 4950.00 255.00 4922.50 279.52 5048.13 128.00 1.415
42 197.33 4950.00 255.00 4922.50 279.05 5047.15 126.95 1.416
43 197.33 4950.00 255.00 4922.50 278.58 5046.17 125.89 1.416
44 197.33 4950.00 255.00 4922.50 278.11 5045.18 124.84 1.417
45 197.33 4950.00 255.00 4922.50 277.65 5044.20 123.79 1.418
46 197.33 4950.00 255.00 4922.50 277.18 5043.22 122.74 1.419
47 197.33 4950.00 255.00 4922.50 276.71 5042.23 121.68 1.420
48 197.33 4950.00 255.00 4922.50 276.24 5041.25 120.63 1.421
49 197.33 4950.00 255.00 4922.50 275.77 5040.26 119.58 1.421
50 197.33 4950.00 255.00 4922.30 275.30 5039.28 118.53 1.422
51 197.33 4950.00 255.00 4922.50 274.83 5038.29 117.47 1.423
52 197.33 4950.00 255.00 4922.50 274.36 5037.30 116.42 1.424
53 197.33 4950.00 255.00 4922.50 273.88 5036.31 115.37 1.425
54 197.33 4950.00 255.00 4922.50 273.41 5035.32 114.32 1.426
55 197.33 4950.00 255.00 4922.50 272.94 5034.33 113.26 1.427
56 197.33 4950.00 255.00 4922.50 272.47 5033.34 112.21 1.429
57 197.33 4950.00 255.00 4922.50 272.00 5032.35 111.16 1.430
58 197.33 4950.00 255.00 4922.50 271.52 5031.36 110.11 1.431
59 197.33 4950.00 255.00 4922.50 271.05 5030.37 109.05 1.432
60 197.33 4950.00 255.00 4922.50 270.57 5029.37 108.00 1.433
61 195.50 4950.00 255.00 4922.50 277.16 5048.57 128.00 1.450
62 195.50 4950.00 255.00 4922.50 276.70 5047.58 126.95 1.451
63 195.50 4950.00 255.00 4922.50 276.25 5046.59 125.89 1.452
64 195.50 4950.00 255.00 4922.50 275.79 5045.60 124.84 1.453
65 195.50 4950.00 255.00 4922.50 275.33 5044.61 123.79 1.453
66 195.50 4950.00 255.00 4922.50 274.87 5043.62 122.74 1.454
67 195.50 4950.00 255.00 4922.50 274.42 5042.63 121.68 1.455
68 195.50 4950.00 255.00 4922.50 273.96 5041.63 120.63 1.456
69 195.50 4950.00 255.00 4922.50 273.50 5040.64 119.58 1.457
70 195.50 4950.00 255.00 4922.50 273.04 5039.65 118.53 1.458
71 195.50 4950.00 255.00 4922.50 272.58 5038.65 117.47 1.459
72 195.50 4950.00 255.00 4922.50 272.12 5037.66 116.42 1.461