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2008-04-15_REVISION - M1980244 (191)
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2008-04-15_REVISION - M1980244 (191)
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Last modified
6/15/2021 5:52:03 PM
Creation date
5/6/2008 3:40:35 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1980244
IBM Index Class Name
REVISION
Doc Date
4/15/2008
Doc Name
VOL IV APP 5 Surface Mine Slope Design
From
CC & V
To
DRMS
Type & Sequence
AM9
Media Type
D
Archive
No
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• MLESIopeDesign <br />Table 1 -Stability Zone Slope Designs <br />• <br />• <br /> Dry Dry Adverse Dry <br />Stability Zone Volcanic Granitic Granitic Pipe Colluvium <br /> Rock Rock Rock Rock <br />Rock Type Volcanic Granitic Granitic Tertiary Volcanic/ <br /> Granitic <br />Intact Strength Strong Moderate Strong Weak Weak <br />° <br /> (10,000 psi) (-6000 psi) (-8000 psi) (-1000 psi) (~-35 <br />, c-0) <br />Structure Dominantly Random Dominantly Rubble n/a <br /> vertical vertical <br />Fracturing Moderate Moderate Moderate Intense n/a <br />Rock Quality Designator~'i --80% -60% -50% -0% n/a <br />Joint Orientation Random Random Along <br />schistosity Random n/a <br />Joint Filling None None None Silt, gypsum, n/a <br /> calcite <br />Water Pressure None None None Varies <br /> (-20% ht) <br />Overall Slope Angle 60° 50° 45° 40° 36° <br />Inter-Bench Slope Angle 79° 79° 79° 79° 40° <br />Lifts Between Benches 3 3 3 3 1-3 <br />Lift Height 35 ft 35 ft 35 ft 35 ft 0-35 ft <br />Main Bench Width 30 ft 40 ft 45 ft 45 ft 18 ft <br />Intermediate Bench Width 5 ft 15 ft 20 ft 30 ft n/a <br />[1] RQD (Rock Quality Designator) =percentage of rock core recovered which exceeds 4" in intact length pieces. <br />Report 1385E.20080411 <br />
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