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E:\Work\Dropbox(GLA)\United Companies\Sievers Pit\DRMS\Draft 190930\Sievers Pit GALENA Data.pdf Monday,September 30,2019 4:37 PM <br /> Slope Surface (5 points) <br /> ------------- <br /> -200.00 5568 .00 0.00 5568.00 23.00 5568.00 137.00 <br /> 5530.00 500.00 5530.00 <br /> Phreatic Surface (2 points) <br /> ---------------- <br /> -200.00 5510.00 500.00 5510.00 <br /> Failure Surface (Critical, from previous analysis) <br /> --------------- <br /> Initial circular surface for critical search defined by: XL,XR,R <br /> Intersects: XL: 19.00 YL: 5568 .00 XR: 134 .50 YR: 5530.83 <br /> Centre: XC: 289.28 YC: 6209.88 Radius: R: 696.46 <br /> Variable Restraints <br /> ------------------- <br /> Parameter descriptor: XL XR R <br /> Range of variation: 90. 00 132.00 25.00 <br /> Trial positions within range: 25 25 25 <br /> - -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- <br /> -- -- -- -- -- -- -- -- -- - <br /> RESULTS: Analysis 2 - Mining and Reclamation Slope Stability <br /> Bishop Simplified Method of Analysis - Circular Failure Surface <br /> --------------------------------------------------------------- <br /> Critical Failure Surface Search using Multiple Circle Generation Techniques <br /> Factor of Safety for initial failure surface approximation: 3.046 <br /> There were: 8038 successful analyses from a total of 15625 trial surfaces <br /> 7587 analyses terminated due to unacceptable geometry <br /> Critical (minimum) Factor of Safety: 3. 00 <br /> Results Summary - Lowest 99 Factor of Safety circles <br /> ---------------------------------------------------- <br /> Circle X-Left Y-Left X-Right Y-Right X-Centre Y-Centre Radius <br /> FoS <br /> 1 56.50 5556.83 68.50 5552. 83 280. 09 6207 . 62 688.12 <br /> 3.000 <-- Critical Surface <br /> 2 56.50 5556. 83 68. 50 5552. 83 282. 40 6214 .54 695.42 <br /> 3. 000 <br /> 3 56. 50 5556.83 68.50 5552. 83 278.78 6203. 67 683. 96 <br /> 3. 000 <br /> 4 56.50 5556. 83 68. 50 5552. 83 279. 44 6205. 64 686.04 <br /> 3.000 <br /> 5 56.50 5556. 83 68.50 5552. 83 283.72 6218 .49 699.58 <br /> 3. 000 <br /> 6 56. 50 5556.83 68.50 5552. 83 282. 07 6213.55 694 .37 <br /> 3. 000 <br /> 7 56. 50 5556.83 68.50 5552. 83 284 . 38 6220. 47 701. 67 <br /> 3. 000 <br /> 8 56.50 5556.83 68. 50 5552. 83 282. 73 6215.52 696. 46 <br /> 3.000 <br /> 9 52.75 5558.08 68. 50 5552. 83 281. 18 6217 .12 697.50 <br /> 3.000 <br /> 10 60.25 5555.58 74 .00 5551.00 288. 02 6215. 95 698.54 <br /> 3.000 <br /> 11 56.50 5556.83 68.50 5552. 83 285.70 6224 .42 705.83 <br /> 3.000 <br /> 12 64 .00 5554 .33 79. 50 5549. 17 291. 66 6211.43 695.42 <br /> -7- <br />