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^<br />

Appendix D-- Slope Stability Analysis for poEIRL-2001-11<br />

Environmental Cap Rev. e l Drrfl R<br />

RediindStrikeout<br />

Table D-3. Summary of Alternative 3 Stability Analysis.<br />

Slope Seismic<br />

Condition Soil Properties Percent Slope Itelght, m Coefficient Foctorof<br />

sarety<br />

(ft)<br />

tg)<br />

Approximate<br />

Derormation,<br />

em<br />

(ln.)<br />

Silt: Static:0 >10 0<br />

Veneer stability<br />

(engineered<br />

barrier stability)<br />

Q<br />

c<br />

Y<br />

. 30 degrees<br />

s 0<br />

s<br />

. 995 ( 1051b11t )<br />

296 0.92 (3) Dynamic:<br />

0 . 78<br />

1.0<br />

23 (1) (parallel<br />

to layer, at top<br />

of silQ'<br />

Engineered fill': Static: 0 >2.0 0<br />

Overall stability<br />

of engineered<br />

fdl and erosion<br />

protection<br />

^ s<br />

c s<br />

Y s<br />

40 degrees<br />

0<br />

1,220 kg/ms<br />

(1301b1fti)<br />

2% uPPef N.<br />

311:1 V lower<br />

parl (see<br />

Figure D-2)<br />

24 (90) Dynamic:<br />

0.4<br />

1.0<br />

25 5 . 0 (1-2)<br />

(along surface<br />

shown In<br />

Figure D-2f D-2)<br />

'Derormation for aven8e design acceleratiun for critical displacemcnt plane.<br />

"Presence of engineered batrier ignored. Erosion protection modeled as a 1.8-m ( 6-ft)-dtick layer with unit weight of<br />

1,266 kg/ms ( 1351b/lts) and hiction angle ( #) of 43 degrees.<br />

•Defonaation for average design acceleration for failure surface of 0.8 g.<br />

2<br />

3<br />

4 Table D4. Summary of Atternative 4 Stability Analyses for Exterior Bottom Liner.<br />

Sbpe Sap>,gc<br />

Equipment<br />

^^^ Factor<br />

Condition Soil Properties Slope Height, as<br />

(n)<br />

Height, in<br />

(e)<br />

of<br />

O^ k<br />

Safety<br />

^ e 24degrees 0 0 1A5<br />

c s 0 for textured 0.15 0 1.3<br />

Veneer lmpg/gcocompositelnterface<br />

stability 4, 26<br />

311:1V 9.2(30)<br />

(bottom liner<br />

stability) Y s (0.5) 609(4A00) 1.3<br />

(3 ft) operating layer during<br />

wrstntction<br />

NOTE: Stability of oventl embankment and final engineered barrier for Alternative 4 we identical to those results for<br />

Alternative 3 shown In Table D-3 and are not repeated In this table.<br />

Final Feasibility Stnndy fors8e Canyon Disposition Initiative (221-17 Facility)<br />

)one 2003 D-18

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