2014-08-19_PERMIT FILE - C1980007 ‎(10)‎

• Permit No: C1980007
• IBM Index Class Name: Permit File
• Doc Date: 8/19/2014
• Doc Name: Haul Road Geotechnical Design Method
• Section_Exhibit Name: Exhibit 82 Appendix H
• Media Type: D
• Archive: No

0.98
Mountain Coal Company RPE East HR -1: Seepage & Stability Analysis
ESSA, Colluvium Fully Softened Shear Strength, Seismic (no suction)
File Name: RPE -Haul -Road -Stability - FinalSurvey.gsz Name: Shale
6.55 Model: Shear/Normal Fn.
Last Saved Date: 5/10/2012 Unit Weight: 142.5 pcf
6.50 Factor of Safety: 0.98 Name: Colluvium (FS) (no suction) Unit Wt. Above Water Table: 135 pcf
Model Mohr -Coulomb Strength Function: Shale (Halfway: F
6.25
I ---
C)
p 6.20
C)
T_
X 6.15
6.10
O
6.05
W
6.00
5.95
5.90
5.85
5.80
5.75
5.70
0.26
Name: Coal
Model. Mohr -Coulomb
Unit Weight: 85 pcf
Unit Wt. Above Water Table: 82.4 pcf
Cohesion: 5000 psf
Phi: 30 °
7.5 gpm/50' = 3.342e-004 cfstft
Figure 11
Haul ---------------------------
Roadd
-----------------------------------------
--
Name: Sandstone
Model: Bedrock (Impenetrable)
0 36 0.46 0 56 0.66 0.76 0.86 0.96 1.06 1.16
Horizontal Distance (ft) (x 1000)
6.55
6.50
6.45
6.40
6.35
6.30
6.20
6.15 C
C
6.10
6.05
6.00
5.95
5.90
5.85
5.80
5.75
5.70
1.26 1.36 1.46 1.56 1.66 1.76
Unit Weight: 135.4 pcf
6.45
Unit Wt. Above Water Table: 130 pcf
Horizontal Seismic Acceleration - 0.0698g Cohesion: 394 psf -
Phi: 23.9 °
6.40
Name: Carbonaceous Shale
Model: Shear/Normal Fn.
Unit Weight. 142.5 pcf Name: Drainage Blanket
6.35
Unit Wt. Above Water Table: 135 pcf Model: Mohr -Coulomb
6.30
Strength Function: Shale (FS, Lab) Unit Weight: 120 pcf
Cohesion: 0 psf
Phi: 30 °
6.25
I ---
C)
p 6.20
C)
T_
X 6.15
6.10
O
6.05
W
6.00
5.95
5.90
5.85
5.80
5.75
5.70
0.26
Name: Coal
Model. Mohr -Coulomb
Unit Weight: 85 pcf
Unit Wt. Above Water Table: 82.4 pcf
Cohesion: 5000 psf
Phi: 30 °
7.5 gpm/50' = 3.342e-004 cfstft
Figure 11
Haul ---------------------------
Roadd
-----------------------------------------
--
Name: Sandstone
Model: Bedrock (Impenetrable)
0 36 0.46 0 56 0.66 0.76 0.86 0.96 1.06 1.16
Horizontal Distance (ft) (x 1000)
6.55
6.50
6.45
6.40
6.35
6.30
6.20
6.15 C
C
6.10
6.05
6.00
5.95
5.90
5.85
5.80
5.75
5.70
1.26 1.36 1.46 1.56 1.66 1.76