2011-04-19_PERMIT FILE - M2011001

• Permit No: M2011001
• IBM Index Class Name: PERMIT FILE
• Doc Date: 4/19/2011
• Doc Name: Adequacy Review- Stability Analysis Exhibit
• From: DRMS
• To: Lafarge West, Inc.
• Email Name: PSH
• Email Name: AJW
• Media Type: D
• Archive: No

Galena 5.02 Analysis Results
Licensee: Office of Surface Mining
Project: Lafarge - Iverson Mine
File: D:\Documents and Settings\PSH\My Documents\My Projects\ZZ Stability Analysis - Galena\I ... \Communication Tower.gmf
Processed: 14 Apr 2011 15:55:55
DATA: Analysis 1 - M-2011-001 Stability Analysis
Material Properties (4 materials)
-------------------
Material: 1 (Mohr-Coulomb Isotropic) - Overburden
Cohesion Phi UnitWeight Ru
150.00 28.0 114.00 1.10
Material: 2 (Mohr-Coulomb Isotropic) Sand and Gravel
Cohesion Phi UnitWeight Ru
0.00 37.0 130.00 1.10
Material: 3 (Mohr-Coulomb Isotropic) Residual Bedrock
Cohesion Phi UnitWeight Ru
0.00 14.0 124.00 0.00
Material: 4 (Mohr-Coulomb Isotropic) Claystone Bedrock
Cohesion Phi UnitWeight Ru
500.00 22.0 124.00 0.00
Water Properties
----------------
Unit weight of water: 62.430 Unit weight of water/medium above ground: 62.430
Material Profiles (4 profiles)
Profile: 1 (2 points) Material beneath: 1 Overburden
-50.00 4688.00 100.00 4688.00
Profile: 2 (2 points) Material beneath: 2 - Sand and Gravel
-50.00 4682.50 100.00 4682.50
Profile: 3 (2 points) Material beneath: 3 - Residual Bedrock
-50.00 4650.50 100.00 4650.50
Profile: 4 (2 points) Material beneath: 4 Claystone Bedrock
-50.00 4648.00 100.00 4648.00
Slope Surface (8 points)
-------------
-50.00 4688.00 56.00 4688.00 56.50
67.50 4648.50 68.00 4650.50 80.00
Phreatic Surface (13 points)
----------------
-50.00 4679.00 -39.00 4679.00 -32.00
-8.00 4676.50 -5.00 4676.00 12.00
56.50 4655.50 56.50 4650.50 80.00
Failure Surface
---------------
Circular surface defined by: XL,XR,R
4650.50 65.00 4650.50
4650.50
4678.00 -26.00 4678.50
4673.50 24.00 4671.00
4650.50
Intersects: XL: -6.00 YL: 4688.00 XR: 67.45 YR: 4648.50
Centre: XC: 58.95 YC: 4720.73 Radius: R: 72.73
RESULTS: Analysis 1 - M-2011-001 Stability Analysis
Bishop Simplified Method of Analysis - Circular Failure Surface
---------------------------------------------------------------
Factor of Safety: 1.18
Slice Geometry and Properties (44 slices)
Slice X-S ------------------- Base ----- ----------- ----
X-Left Area Angle Width Length Matl Cohesion Phi
1 -6.00 4.59 61.4 2.24 4.67 1 150.00 28.0
2 -3.76 4.23 57.7 0.88 1.65 1 150.00 28.0
3 -2.88 10.94 57.7 1.61 3.02 2 0.00 37.0
4 -1.27 12.35 54.0 1.37 2.34 2 0.00 37.0
5 0.10 14.94 54.0 1.37 2.34 2 0.00 37.0
6 1.48 13.10 50.4 1.05 1.65 2 0.00 37.0
7 2.53 27.56 50.4 1.93 3.03 2 0.00 37.0
8 4.45 26.1.1 46 7 1.60 2.34 ? 0.00 37.0
9 6.06 28.84 46.7 1.60 2.34 2 0.00 37.0
10 7.66 33.56 43.0 1.71 2.34 2 0.00 37.0
11 9.37 36.28 43.0 1.71 2.34 2 0.00 37.0
12 11.08 20.58 39.3 0.92 1.19 2 0.00 37.0
13 12.00 31.46 39.3 1.35 1.74 2 0.00 37.0
14 13.35 32.95 39.3 1.35 1.74 2 0.00 37.0
15 14.70 48.75 35.6 1.90 2.34 2 0.00 37.0
16 16.60 51.33 35.6 1.90 2.34 2 0.00 37.0
17 18.50 56.17 32.0 1.98 2.34 2 0.00 37.0
18 20.48 58.62 32.0 1.98 2.34 2 0.00 37.0
19 22.46 47.10 28.3 1.54 1.75 2 0.00 37.0
20 24.00 40.40 28.3 1.29 1.46 2 0.00 37.0
65.50 4648.50
-14.00 4677.00
38.00 4663.00
----------------
PoreWater Normal Test
Weight Force Stress Factor
523.21 0.00 0.52 1.14
482.67 0.00 202.26 1.09
1279.80 0.00 394.53 0.93
1484.73 0.00 575.79 0.91
1822.11 0.00 706.63 0.91
1610.94 0.00 866.39 0.89
3412.47 193.49 1026.28 0.89
3253.50 405.47 1280.55 x.87
3607.83 619.17 1449.29 0.87
4212.03 823.90 1676.84 0.86
4566.12 1019.72 1838.00 0.86
2595.11 590.90 2025.94 0.85
3971.08 945.62 2120.50 0.85
4164.70 1035.25 2232.46 0.85
6170.27 1518.36 2433.35 0.84
6506.38 1659.26 2573.72 0.84
7127.24 1789.86 2789.48 0.84
7446.16 1910.11 2919.19 0.84
5987,16 1501.04 3115.66 0.85
5139.07 1277.71 3192.89 0.85