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2010-04-26_PERMIT FILE - C1980007A (7)
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2010-04-26_PERMIT FILE - C1980007A (7)
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Last modified
8/24/2016 4:08:44 PM
Creation date
6/28/2010 2:19:03 PM
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Template:
DRMS Permit Index
Permit No
C1980007A
IBM Index Class Name
Permit File
Doc Date
4/26/2010
Doc Name
Laboratory Test Data
Section_Exhibit Name
Exhibit 82 Appendix B
Media Type
D
Archive
Yes
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TRIAXIAL TEST AST M: D 4767 Job No. 7110 <br />Date: 8/14/09 <br />Project: West Elk Mine RPE Expansion - #06261003 <br />Boring #: B -6 Sample #: Type: 3T Depth (ft): 11.5 -13.5 <br />Soil Type: Sandy Silt w/a trace of gravel (ML) <br />1 <br />e <br />d 0.e <br />0.6 <br />m <br />a <br />d 0.4 <br />o` <br />a <br />0.2 <br />0 <br />3 <br />2.5 <br />w <br />N <br />2 <br />N <br />N <br />2 1.5 <br />0 1 <br />is <br />00.5 <br />0 <br />3. <br />3.0 <br />0 <br />9 2.5 <br />N <br />U) 2.0 <br />in <br />1.5 <br />1.0 <br />0 5 10 15 <br />Axial Strain (%) <br />3 <br />N <br />r <br />2 <br />a) <br />N <br />d <br />N <br />� 1 <br />t <br />y <br />0 1 <br />0 <br />i allure Griterlon: Max. Pore Pressure <br />Angle of internal friction, V = 29.7 <br />Apparent Cohesion, c'= 0.00 (tsf) <br />Test Date: 7/31/09 Liquid Limit: 36.9 <br />Test Type: CU w /pp Plastic Limit: 16.0 <br />Strain Rate (in/min): 0.0146 Plasticity Index: 20.9 <br />Strain Rate ('/./min): 0.501 Spec. Gravity (Assumed): 2.68 <br />Before Consolidation A B C D E <br />Diameter (in) 1.45 <br />Height (in) 2.95 <br />Water Content ( %) 17.5 <br />■ Dry Density (pcf) 109.4 <br />Void Ratio 0.53 <br />After Consolidation <br />Diameter (in) 1.42 <br />Height (in) 2.91 <br />Water Content ( %) 17.1 <br />Dry Density (pcf) 114.7 <br />Void Ratio 0.46 <br />Back Pressure (tsf) 5.8 <br />Minor Principal Stress (tsf) 2.00 <br />Max. Deviator Stress (tsf) 2.55 <br />Ultimate Deviator Stress (tsf) 2.55 <br />+ Deviator Stress at Failure (tsf) 2.02 <br />Max. Pore Pressure Buildup (tsf)l 0.97 <br />Pore Pressure Parameter "B"I 1.0 <br />Pct. Axial Strain at Failurel 3.4 <br />"These test results are for informational purposes only and must be reviewed by a <br />qualified professional engineer to verify that the test parameters shown are <br />X appropriate for any particular design" <br />lemarks: Radial drainage strips applied to trimmed specimen; Saturated, backpressured <br />ntil "B" response was 0.95 to 1.00; Consolidated; All Drainage valves closed and <br />nmediatelv sheared. <br />20 I <br />4 <br />3 <br />2 <br />1 <br />0 <br />1 2 3 4 <br />Normal Stress (p') (tsf) <br />Rupture Envelope at Failure <br />a = 26.3 ° a= 0.0 (tsf) <br />5 0 1 2 3 4 5 6 7 <br />Normal Stress (tsf) <br />Effective �': 29.7 ° c'= 0.00 (tsf) <br />Total 0': 19.6 ° c= 0.00 (tsf) <br />8 <br />OIL <br />9301 Bryant Ave. South Suite #107 N Bloomington, Minnesota 55420 -3436 <br />ESTING, INC. <br />
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