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2001-12-11_PERMIT FILE - C1980007A (2)
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2001-12-11_PERMIT FILE - C1980007A (2)
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Last modified
12/17/2018 7:22:05 AM
Creation date
11/20/2007 3:12:21 PM
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Template:
DRMS Permit Index
Permit No
C1980007A
IBM Index Class Name
Permit File
Doc Date
12/11/2001
Doc Name
By TOC Deleted
Section_Exhibit Name
Exhibit 40 Geotechnical Analysis B & F Seams
Media Type
D
Archive
Yes
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<br />TABLE 3.4.A.12 <br />COAL MECHANICAL PROPERTY SUMMARY <br />(AFTER RAO, 1983) <br />• <br />April 1989 <br /> Uniaxial <br />Compressive <br />Strength "Brazilian" <br />Tensile <br />Strength <br />Elastic <br />Modulus <br />F Seam *Avg= 2,697 137 0.35 x 106 <br /> S= ~ 738 93 0.67 x 106 <br /> t7= 4 3 4 <br /> COV= .27 .68 .19 <br />E Seam Avg= 3,169 327 0.47. x 106 <br /> 5= 983 106 0.07 x 106 <br /> t7= 4 3 4 <br /> COV= .31 .32 .17 <br />C Seam Avg= 2,440 <br />S= 1,299 225 <br />7 0.89 <br />0..50 x <br />x 106 <br />106 <br /> N= 3 2 3 <br /> COV= .53 .03 .58 <br />B Seam Avq= 2,987 N/A 0.44 x 106 <br /> S= 1,368 O.ll x 106 <br /> t1= 4 4 <br /> COV= .46 .24 <br />* Avg = Average, psi <br />N = Number of tests <br />• <br />S = Standard deviation, psi <br />COV = Coefficient of variation <br /> <br />
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