REV07535

• Permit No: M1980244
• IBM Index Class Name: Revision
• Doc Date: 8/6/1998
• Doc Name: PAD 1 SLOPE STABILITY EVALUATION
• From: GOLDER ASSOCIATES INC
• To: CRIPPLE CREEK & VICTOR GOLD MINING CO
• Type & Sequence: TR27
• Media Type: D
• Archive: No

1

1

7 1325.50 9663.6 9660.1 .0 1570.9
8 1333.00 9273.1 9269.8 .0 1507.4
9 1415.50 7989.2 7986.3 .0 1298.7
10 1517.75 6487.4 6485.0 .0 1054.6
11 1538.05 6242.9 6240.6 .0 1014.8
12 1543.05 6373.0 6215.9 .0 1036.3
l3 1624.00 9510.8 9012.9 .0 2704.6
14 1845.00 16665.0 16549.0 .0
3992.6
IS 2028.40 19706.6 21556.8 .0
4485.8
16 206260 19981.6 21856.9 .0
4533.8
17 2069.20 19995.0 21871.6 .0
4536.2
IS 2183.98 21527.1 23254.1 .0
4803.8
19 2297.98 22801.4 24629.6 .0
5026.4
20 2298.18 15525.4 24605.1 .0
3755.3
21 2320.13 7916.1 20598.4 .0 4331,7
22 2363.65 4653.0 12624.9 .0 2654.9
23 2391.71 2877.6 7486.0 .0 1574.3
24 2412.83 1217.4 3166.9 .0 666.0
16 2068.40 15.01 1362576. 69.40 208.16
.333
17 2070.00 15.01 1359740. 69.48 208.30
.334
18 2297.96 15.01 1045029. 85.91 234.49
.366
19 2298.00 15.01 1044968. 85.92 234.50
.366
20 2298.36 15.01 1038994. 86.05 234.14
.368
2l 2341.89 15.01 466960. 59.31 158.21
.375
22 2385.42 15.01 119578. 3[.59 82.27
.384
23 2396.00 15.01 59708. 27.83 60.32
.461
24 2427.66 .00 -9. -.55 .00 .000
AVERAGE VALUES ALONG FAO.URE SURFACE
Total Normal Suess = 11686.66 (psf)
Pore Water Pressure = .00 (psf)
Shear Stress = 2920.67 (psf)
Total Length of failure surface = 1556.56 feel

1

1

SPENCER'S (1973) -Magnitude & Location of
Inerslice Forces
Slice Right Force Interstice Force Bourdaty
Height
k x-word Angle Force Height Height
Ratio
(R} (degrees} Ob) (k) (k)
1 1104.21 15.01 149726. 13.23 31.23
.424
2 1104.82 IS.OI 153399. 13.55 31.95
.424
3 1250.10 15.01 213429. 30.63 75.44
.406
4 1267.50 15.01 236862. 33.56 86.65
.387
5 1315.30 15.01 255184. 35.65 83.86
.425
6 1318.50 ]5.01 257255. 35.89 83.54
.430
7 1332.50 15.01 265968. 37.03 77.47
.478
8 1333.50 15.01 266565. 37.11 77.03
.482
9 !497.50 15.01 350946, 52.38 60.57
.865
10 1538.00 15.01 367867. 56.6D 56.51
1.002
I 1 1538.10 15.01 367907. 56.61 56.50
1.002
12 ]54$.00 15.01 375704. 57.64 56.07
1.028
13 1700.00 15.01 7366 12. 55.19 110.30
.500
14 1990.00 15.01 1498397. 66.45 201.30
.330
15 2066.80 15.01 1365410. 69.33 208.02
.333
For the single specified surface and the assumed angle
of the uiferslitx forces, the SPENCER'S (1973)
procedure gives a
FACTOR OF SAFETY = 1.534
Total shear strength available
along specified failure surface = 691.31E+04 Ib
+r+++are+++rrrrr+rrrrr+++++rrsr+r+w rrr+r+++rrrar+rr
ar+++rrrrr+
For the specified wrface, the analysis compared the
followigg:
Negative (tensile) Normal Effective Force = 0 slices
Negative (tensile) Werslice Force = 0 slices
Unreasotuble Location of Interstice Force = 3 slices
In view of these ertors, the computed FOS may be
UNREASONABLE!
+r+arrr+nrrrr++rr+w++++++rrrr+++rrrrsrrr+rrrrrrrgr
r+arr+r+ur