REP03152

• Permit No: C1981019
• IBM Index Class Name: Report
• Doc Date: 2/22/1996
• Doc Name: AUGER MINING ANALYSIS WEST PIT AND STREETER PIT AND STABILITY EVALUATION NORTH WALL OF WEST PIT COLO
• Permit Index Doc Type: STABILITY REPORT
• Media Type: D
• Archive: No

• I 4.
3-
Q
O
0
4
2-
•
1.5-
1.2-
1-
•

MAINTAIN ADVER SE DIP,
DECREASE WATE R TO
_ _ _ 1/2 INTERBURD EN

~`
`
~~~
~
MAIN TAIN FULL
WATE R, DECREASE
DIP TO ZERO

'~ ~ NORTH WALL
~,~ FULL WATER
ADVERSE DIP
ti
ti

30 40 50 60 70
SLOPE ANGLE (DEGREES)
WEDGE MODEL
NOTES:
1. PSUEDOSTATIC COEFFICIENT OF
O.OSg INCLUDED.
2. ADVERSE BEDDING DIP IS 5 DEGREES
TOWARDS SLOPE FACE.
4-
3-
Q
O
0_
O
Q
V_
2-
1.5-
1.2-
1-

NORTH WALL, 250' HEIGHT
WITHOUT PSUEDOSTATIC
WITH PSUEDOSTATIC
I
I

' ~~ ~~ SIDE WALLS, 350'
~~ ~~ WITHOUT PSUEDOSTAI
~ ~ WITH PSUEDOSTATIC

\ ~
t ~
~
\
~
\

i
i
~~
~
v

i
HEIGHT
IC
30 40 50 60 70
SLOPE ANGLE (DEGREES) I
CIRCULAR MODEL ~
NOTES: I~
1. WATER TO 1/2 INTERBURDEN
HEIGHT INCLUDED.
2. BACK CALCULATED STRENGTH
ENVELOPE USED.
CTL/THOMPSON, INC.
CONSULT{NC ENGINEERS
GEOIEf}W IG1L/EM1flON4ENfA1/YA1EpNL5
1071 N. 12TH AVF)IU4 OFM'Ol COILRApp lU2M
(w.7) !2}-0777
SUMMARY OF STABILITY
ANALYSES
COLON'70 MINE. MOFFAT COUNiy, CO.
JOB N0. 23,585 FIG. B-4