2008-04-15_REVISION - M1980244 ‎(192)‎

• Permit No: M1980244
• IBM Index Class Name: REVISION
• Doc Date: 4/15/2008
• Doc Name: VOL IV APP 5 Attachment 2 Globe Hill Mine Slope Design
• From: CC & V
• To: DRMS
• Type & Sequence: AM9
• Media Type: D
• Archive: No

• TableofContents AdrianBrown
1. INTRODUCTION ..................................................................2
2. rockmass ............................................................................. 2
2.1 Information ................................................................. 2
2.2 Soil and Colluvium ..................................................... 3
2.3 Mine Backfill ............................................................... 3
2.4 Bedrock ......................................................................3
2.4.1 Volcanic Breccia and Phonolite ...................... 3
2.4.2 Globe Hill Pipe ................................................ 3
2.5 Rock Quality ............................................................... 3
2.6 Fracture Intensity ....................................................... 4
• 2.7 Intact Rock Strength ..................................................4
2.8 Shear Strength ........................................................... 5
2.9 Groundwater .............................................................. 5
2.10 Rock Mass Rating (RMR) ..........................................5
3. SLOPE DESIGN ...................................................................6
3.1 Hoek and Bray Circular Failure Analysis ....................6
3.1.1 Method ........................................................... 6
3.1.2 Hoek-Brown Failure Criterion ......................... 6
3.1.3 Circular Slope Failure Analysis ....................... 7
3.1.4 GHMX Analysis .............................................. 8
3.2 Block Failure Analysis ................................................ 8
3.2.1 Method ........................................................... 8
3.2.2 Results ........................................................... 9
• 3.3 Unconsolidated Material .............................................9
Report 1385E.20071126 i