Walter
Bouldin Dam
Report
generated using GeoStudio 2007, version 7.01. Copyright © 1991-2007 GEO-SLOPE
International Ltd.
File Information
Created By: Leonard Lam
Revision
Number: 24
Last Edited
By:
Date: 30/04/2007
Time: 11:43:06 PM
File Name: Rapid drawdown with multi-stage.gsz
Directory: C:\PROJECTS\DEV\TestData\GeoStudio\Examples\SlopeW\
Walter Bouldin Dam
Kind: SLOPE/W
Method: Spencer
Convergence
Minimum Slice
Thickness: 0.1
Ignore
seismic load in strength: No
Number of
Slices: 30
Optimization
Tolerance: 0.01
Direction of
movement: Right to Left
Allow Passive
Mode: 0
Slip Surface
Option: Grid and Radius
PhreaticCorrection:
No
FOS
Distribution Calculation: Constant
Optimize
Critical Slip Surface Location: No
Cap Suction: No
Rapid
Drawdown: Yes
DrawdownDistance:
32
IncludeAirFlow:
No
PWP
Conditions Source: Piezometric Line
ConsolSatOnly:
No
MovingBoundary:
No
NumCritialSlipSurfaces:
1
Materials
Material 1: Riprap
Model: Mohr-Coulomb
Weight: 140 pcf
Cohesion: 0 psf
Phi: 40 °
Phi-B: 0 °
Drawdown
Total Cohesion: 0 psf
Drawdown
Total Phi: 0 °
Material 2: Clayey Silty Sand
Model: Mohr-Coulomb
Weight: 128 pcf
Cohesion: 240 psf
Phi: 32.7 °
Phi-B: 0 °
Drawdown
Total Cohesion: 650 psf
Drawdown
Total Phi: 13 °
Material 3: Micoceous Silt
Model: Mohr-Coulomb
Weight: 123 pcf
Cohesion: 220 psf
Phi: 22.5 °
Phi-B: 0 °
Drawdown
Total Cohesion: 450 psf
Drawdown
Total Phi: 11 °
Material 4: Cretoceous Clay
Model: Mohr-Coulomb
Weight: 124 pcf
Cohesion: 180 psf
Phi: 19 °
Phi-B: 0 °
Drawdown
Total Cohesion: 230 psf
Drawdown
Total Phi: 13 °
Material 5: Clayey Sandy Gravel
Model: Bedrock (Impenetrable)
Weight: 0 pcf
Regions
|
|
Material |
Points |
|
Region 1 |
Riprap |
2,3,5,6 |
|
Region 2 |
Clayey Silty Sand |
1,2,6,5,7,8,9,10,11,15,12 |
|
Region 3 |
Micoceous Silt |
8,13,14,11,10,9 |
|
Region 4 |
Cretoceous Clay |
11,15,16,14 |
|
Region 5 |
Clayey Sandy Gravel |
16,17,12,15 |
Points
|
|
X |
Y |
|
Point 1 |
0 |
205 |
|
Point 2 |
100 |
245 |
|
Point 3 |
140 |
265 |
|
Point 4 |
|
|
|
Point 5 |
147 |
265 |
|
Point 6 |
106 |
245 |
|
Point 7 |
180 |
265 |
|
Point 8 |
205 |
255 |
|
Point 9 |
147.5 |
255 |
|
Point 10 |
118 |
242 |
|
Point 11 |
87.5 |
235 |
|
Point 12 |
12.5 |
205 |
|
Point 13 |
216 |
250 |
|
Point 14 |
216 |
235 |
|
Point 15 |
55 |
222 |
|
Point 16 |
216 |
222 |
|
Point 17 |
216 |
205 |
Tension Crack
Tension Crack
Option: (none)
Slip Surface Grid
Upper Left: (52.5, 330)
Lower Left: (52.5, 285)
Lower Right: (102.5, 285)
Grid
Horizontal Increment: 10
Grid Vertical
Increment: 10
Left
Projection Angle: 0 °
Right
Projection Angle: 0 °
Slip Surface Radius
Upper Left
Coordinate: (87, 222.00348)
Upper Right
Coordinate: (112, 222.00348)
Lower Left
Coordinate: (87, 222.00348)
Lower Right
Coordinate: (112, 222.00348)
Number of
Increments: 0
Left
Projection: No
Left
Projection Angle: 0 °
Right
Projection: No
Right
Projection Angle: 0 °
Slip Surface Limits
Left
Coordinate: (0, 205)
Right
Coordinate: (216, 250)
Piezometric Lines
Piezometric Line 1
Coordinates
Coordinate: (0, 252)
Coordinate: (212, 252)
Adjust Piez
Line By: 0 ft
Bound by
Surface Layer: Yes
Materials
Considered
Material: Riprap
Material: Clayey Silty Sand
Material: Micoceous Silt
Material: Cretoceous Clay
Material: Clayey Sandy Gravel
Seismic Loads
Horz Seismic
Load: 0
Vert Seismic
Load: 0
Critical Slip Surfaces
|
|
Number |
FOS |
Center (ft) |
Radius (ft) |
Entry (ft) |
Exit (ft) |
|
1 |
72 |
1.013 |
(77.5, 312) |
89.997 |
(154.249, 265) |
(51.8445, 225.738) |
Slices of Slip Surface: 72
|
|
X (ft) |
Y (ft) |
PoreWaterPressure
(psf) |
Base |
Frictional Strength
(psf) |
Cohesive Strength
(psf) |
|
1 |
53.767445 |
225.21195 |
-323.79219 |
454.57806 |
0 |
499.88 |
|
2 |
57.61335 |
224.2503 |
-263.83518 |
850.86529 |
0 |
677.69 |
|
3 |
61.284035 |
223.4943 |
-216.93198 |
975.18796 |
0 |
385.87 |
|
4 |
64.7795 |
222.9245 |
-181.39694 |
1215.1279 |
0 |
418.79 |
|
5 |
68.27496 |
222.49475 |
-154.5984 |
1429.1438 |
0 |
448.43 |
|
6 |
71.77042 |
222.2031 |
-136.40837 |
1618.5665 |
0 |
474.67 |
|
7 |
75.26588 |
222.0482 |
-126.74876 |
1784.6235 |
0 |
497.57 |
|
8 |
78.761345 |
222.0293 |
-125.56832 |
1928.3329 |
0 |
517.23 |
|
9 |
82.25681 |
222.14635 |
-132.86667 |
2050.5762 |
0 |
533.73 |
|
10 |
85.75227 |
222.39985 |
-148.67487 |
2152.071 |
0 |
547.19 |
|
11 |
89.0625 |
222.76325 |
-171.55864 |
2230.2972 |
0 |
557.43 |
|
12 |
92.1875 |
223.2242 |
-200.30976 |
2288.5779 |
0 |
564.91 |
|
13 |
95.3125 |
223.79825 |
-236.11341 |
2331.2118 |
0 |
570.12 |
|
14 |
98.4375 |
224.48765 |
-279.1092 |
2358.3681 |
0 |
573.07 |
|
15 |
101.5 |
225.2766 |
-328.37389 |
2396.3712 |
0 |
579.34 |
|
16 |
104.5 |
226.16355 |
-383.71116 |
2444.8391 |
0 |
588.86 |
|
17 |
108 |
227.35605 |
-457.34489 |
2470.7489 |
0 |
593.68 |
|
18 |
112 |
228.9071 |
-554.03504 |
2465.8923 |
0 |
592.71 |
|
19 |
116 |
230.6844 |
-664.82443 |
2429.8874 |
0 |
605.06 |
|
20 |
119.175 |
232.2453 |
-763.4296 |
2375.6716 |
0 |
624.81 |
|
21 |
122.21865 |
233.92965 |
-867.35444 |
2302.3896 |
0 |
639.92 |
|
22 |
125.67855 |
236.00885 |
-997.4924 |
2153.2154 |
0 |
784.55 |
|
23 |
128.8611 |
238.12405 |
-1129.3422 |
2027.9041 |
0 |
792.62 |
|
24 |
132.04365 |
240.4433 |
-1273.9083 |
1879.2533 |
0 |
796.83 |
|
25 |
135.2262 |
242.98725 |
-1432.4662 |
1705.8494 |
0 |
797 |
|
26 |
138.40875 |
245.782 |
-1606.5953 |
1505.9374 |
0 |
792.88 |
|
27 |
140.34615 |
247.5834 |
-1721.128 |
1354.8184 |
0 |
782.47 |
|
28 |
142.63485 |
249.96055 |
-1865.4743 |