2022-07-13_REVISION - M2005066 (3)

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M. GALENA 7.1 Analysis Results Version: 7.10.1.04 Licensee: Greg Lewicki and Associates Project: Wattenberg File: G:\benl-000\Documents\Modll.g-mf Processed: 16 May 2022 15:55:31 DATA: Analysis 1 - Mining Slope Material Properties (2 materials) ------------------- Material: 1 (Mohr-Coulomb Isotropic) - Sand and gravel, mixed grain size Cohesion Phi UnitWeight Ru 0.00 45.0 110.00 Auto Material: 2 (Mohr-Coulomb Isotropic) - Loose sand, mixed grain size Cohesion Phi UnitWeight Ru 0.00 34.0 99.00 Auto Water Properties ---------------- Unit weight of water: 62.400 Unit weight of water/medium above ground: 0.000 Material Profiles (2 profiles) ----------------- Profile: 1 (2 points) Material beneath: 1 - Sand and gravel, mixed grain size 0.00 4947.50 500.00 4947.50 Profile: 2 (2 points) Material beneath: 2 - Loose sand, mixed grain size 0.00 4950.00 500.00 4950.00 Slope Surface (4 points) ------------- 0.00 4950.00 200.00 4950.00 201.00 4922.50 482.50 4922.50 Phreatic Surface (3 points) ---------------- 0.00 4946.00 185.00 4946.00 185.00 4922.50 Failure Surface --------------- Initial circular surface for critical search defined by: XL,XR,R Intersects: XL: 170.00 YL: 4950.00 XR: 201.00 YR: 4922.50 Centre: XC: 204.22 YC: 4957.35 Radius: R: 35.00 Variable Restraints ------------------- Parameter descriptor: XL XR R Range of variation: 39.00 1.00 5.00 Trial positions within range: 10 10 5 - -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- - RESULTS: Analysis 1 - Mining Slope Bishop Simplified Method of Analysis - Circular Failure Surface --------------------------------------------------------------- Critical Failure Surface Search using Multiple Circle Generation Techniques Factor of Safety for initial failure surface approximation: 1.675 There were: 375 successful analyses from a total of 501 trial surfaces 126 analyses terminated due to unacceptable geometry Critical (minimum) Factor of Safety: 0.72 Results Summary - Lowest 99 Factor of Safety circles ---------------------------------------------------- Circle X-Left Y-Left X-Right Y-Right X-Centre Y-Centre Radius FoS 1 189.50 4950.00 200.94 4924.03 226.99 4951.01 37.50 0.720 <-- Critical Surface 2 189.50 4950.00 200.94 4924.03 225.75 4950.46 36.25 0.734 3 189.50 4950.00 200.83 4927.08 226.77 4954.17 37.50 0.738 4 189.50 4950.00 200.94 4924.03 224.50 4949.92 35.00 0.750 5 189.50 4950.00 200.83 4927.08 225.57 4953.58 36.25 0.751 6 189.50 4950.00 200.83 4927.08 224.37 4952.99 35.00 0.764 7 189.50 4950.00 200.94 4924.03 223.24 4949.36 33.75 0.767 8 189.50 4950.00 200.72 4930.14 226.21 4957.64 37.50 0.777 9 189.50 4950.00 200.83 4927.08 223.17 4952.39 33.75 0.778 10 189.50 4950.00 200.94 4924.03 221.98 4948.80 32.50 0.785 11 189.50 4950.00 200.72 4930.14 225.07 4957.00 36.25 0.788 12 189.50 4950.00 200.83 4927.08 221.95 4951.79 32.50 0.794 13 189.50 4950.00 200.72 4930.14 223.92 4956.35 35.00 0.800 14 189.50 4950.00 200.72 4930.14 222.77 4955.70 33.75 0.812 15 189.50 4950.00 200.72 4930.14 221.61 4955.04 32.50 0.826 16 189.50 4950.00 200.61 4933.19 225.19 4961.52 37.50 0.849 17 189.50 4950.00 200.61 4933.19 224.10 4960.80 36.25 0.857 18 189.50 4950.00 200.61 4933.19 223.02 4960.08 35.00 0.867 19 189.50 4950.00 200.61 4933.19 221.93 4959.36 33.75 0.877 20 189.50 4950.00 200.61 4933.19 220.83 4958.64 32.50 0.889 21 185.17 4950.00 201.06 4922.50 222.53 4953.25 37.50 0.923 22 185.17 4950.00 200.94 4924.03 222.36 4954.81 37.50 0.937 23 185.17 4950.00 201.06 4922.50 221.33 4952.55 36.25 0.943