2008-04-15_REVISION - M1980244 ‎(193)‎

• Permit No: M1980244
• IBM Index Class Name: REVISION
• Doc Date: 4/15/2008
• Doc Name: VOL IV APP 5 Attachment 1 Cresson Mine Slope Design
• From: CC & V
• To: DRMS
• Type & Sequence: AM9
• Media Type: D
• Archive: No

• TableofContents AdrianBrown
8. CONCLUSION ......................................................... 57
9. REFERENCES .......................................................... 58
ListofTables
Table 1. Point Load Test Results ..................................................4
Table 2. Uniaxial Compressive Strength Test Results ................5
Table 3. Intact Rock Strength Test Results ..................................6
Table 4. Unconfined Compressive Strength Results ..................7
Table 5. Approximate Classification of Rock ...............................8
Table 6. Shear Test Results ...........................................................9
Table 7. Slope Movement Rate Significance .............................35
Table 8. CSIR Classification of Jointed Rock ............................. 39
Table 9. CSIR Rock Mass Classification ..................................... 40
Table 10. NGI Rock Mass Classification .......................:............. 41

• Table 11. Hoek and Bray Rockmass duality Table .................... 43
ListofFigures
Figure 1. Wedge and Block Stability Conditions ....................... 10
Figure 2. Location of Structural Information ............................. 14
Figure 3. Equal Area Projection of All Structural Data .............. 15
Figure 4. Dip Frequency for All Structural Data ........................ 16
Figure 5. Dip Distribution as a Function of Elevation ............... 17
Figure 6. North Mine Structural Information ............................. 20
Figure 7. North Mine Structural Contours ................................. 21
Figure 8. North Mine Structural Stability ................................... 22
Figure 9: Starter Mine Structural Information ........................... 25
Figure 10. Starter Mine Structura[ Contours ............................. 26
Figure 11. Starter Mine Structural Stability ............................... 27
Figure 12. South Mine, East Wall Structural Information......... 30
Figure 13. South Mine, East Wall Structural Contours ............. 31
Figure 14. South Mine, East Wall Structural Stability ............... 32
Figure 15. Movement of Potential East Wall "Toppier"........... 36
Figure 16. Slope Movement Rates (April 1997-May 1998) ....... 37
Figure 17. Hoek and Bray Failure Envelope ............................... 44
Figure 18. Friction and Cohesion for East Wall ......................... 45
• Figure 19. Kink Band Failure Envelope ...................................... 47
1385D.980612 ~ ~~~