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REP26798
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REP26798
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Last modified
8/24/2016 11:57:54 PM
Creation date
11/27/2007 4:34:24 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1980007
IBM Index Class Name
Report
Doc Date
3/1/1981
Doc Name
REPORT PRELIMINARY DESIGN RECOMMENDATIONS INITIAL WASTE ROCK PILE MT GUNNISON COAL MINE SOMERSET CO
Permit Index Doc Type
STABILITY REPORT
Media Type
D
Archive
No
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1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />- 14 - <br />TABLE 1 <br />SUMMARY OF CALCULATED SAFETY FACTORS FOR <br />ALTERNATE WASTE PILE CONFIGURATIONS AND COMPOSITIONS <br />PRINCIPAL SANDSTONE/ <br />MATERIAL SANDSTONE SHALE I3IX ~j,g <br />SLOPE <br />1.0(V):2.0 (H) 1.52 1.41 1.30 <br />1.0(V):2.25(H) 1.70 1.58 1.46 <br />1.0(V):2.5 (H) 1.88 1.76 1.62 <br />The effect of earthquake forces on the stability of the <br />pile was investigated using a pseudo-static analysis in which <br />horizontal forces equal to 0.05 g and 0.10 g were assumed to <br />act on a pile constructed at an angle of 1 (v) 2.25 (h). The <br />calculated safety factors are presented in Table 2. <br />TABLE 2 <br />CALCULATED SAFETY FACTORS FOR ALTERNATE WASTE <br />EiLE COMPOSITIONS UNDER EARTHQUAKE LOADINGS <br />1 (V) 2.25 (H) SLOPE <br />PRINCIPAL <br />MATERIAL <br />HORIZONTAL <br />EARTHQUAKE FORCE <br />SANDSTONE/ <br />SANDSTONE SHALE MIX SHALE <br />0.0 g 1.70 1.58 1.46 <br />0.05 g 1.49 1.38. 1.28 <br />0.10 g 1.32 1.22 1.13 <br />6co+iroro cavsmm+c. iHC. <br />
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