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

1.11
Mountain Coal Company RPE East HR -1: Seepage & Stability�Analysis
USSR, Seismic
File Name: RPE Haul Road Stability_FinalSurvey.gsz Name: Shale
6.55 - - - Model: Shear/Normal Fn.
Last Saved Date: 5/10/2012 Name: Colluvium (Undrained) Unit Weight: 142.5 pcf
6.50 Factor of Safety: 1.11 Model: Mohr -Coulomb Unit Wt. Above Water Table: 135 pcf
Unit Weight: 135.4 pcf Strength Function: Shale (Halfway: F
Unit Wt. Above Water Table: 130 pcf
6.45- Cohesion: 487 psf
Horizontal Seismic Acceleration = 0.0698g Phi: 14.8
Vol. WC. Function: Colluvium
6.40 Name: Carbonaceous Shale
Model. Shear/Normal Fn.
6.35 Unit Weight: 142.5 pcf Name: Drainage Blanket
Unit Wt. Above Water Table: 135 pcf Model: Mohr -Coulomb
Strength Function: Shale (FS, Lab) Unit Weight: 120 pcf _,OOj
6.30
6.25
C)p 6.20
C)
T_
X 6.15
O
6.10
N
6.05
W
Name: Coal
Model: Mohr -Coulomb
Unit Weight. 85 pcf
Unit Wt. Above Water Table: 82.4 pcf
Cohesion: 5000 psf
Phi: 30 °
Cohesion: 0 psf
Phi: 30 °
7.5 gpm/50' = 3.342e-004 cfs/ft
6.00
5.95
5.90
5.85
5.80
5.75
5.70
0.26 0.36 0.46 0.56 0.66 0.76
Name: Sandstone
Model: Bedrock (Impenetrable)
Figure 13
6.55
6.50
6.45
6.40
6.35
Ji ------- ------ 6.30
--------------------------------
--- ------------------ 6.25
0.86 0.96 1.06 1.16
Horizontal Distance (ft) (x 1000)
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