Basic HTML Version
www.geotechnicalnews.com
Geotechnical News • September 2013
45
from this research were as follows:
1. Increase in groundwater level was
the main factor that contributes
to the slope failure. The raise of
groundwater level mainly cause by
infiltration of rain water. As earth-
works proceed, large area of land
was cleared on the slope thus led
to large amount of infiltrated water
in the slope during rainfall due to
lack of vegetation covers. Besides,
steep gradient and weak soil mate-
rials of the slope also contribute to
the failure.
2. The FOS for the repaired slope at
every groundwater level consid-
ered using anchored steel sheet
pile wall is slightly less than those
using CBP wall but the values
were higher than FOS of 1.5 which
is considered safe.
3. The construction cost of anchored
steel sheet pile wall was found
economical than CBP wall.
References
Berezantzev, V. G., Khristoforov, V. S.
and Golubkov, V. N. (1961): “Load
Bearing Capacity and Deformation
of Piled Foundation”,
Proceed-
ings 5
th
International Conference
SMFE
, Paris, Vol. 2.
Littlejohn, G. S. (1970) “Soil Anchors,
Proceedings of Conference on
Ground Engineering, ICE
, Lon-
don.
Teo, Eng Chin (2003). “Analysis of
a Contiguous Bored Pile Wall
for Slope Stability and Repair
using Finite Element Modeling”.
University Technology Malaysia:
B.Eng. (Civil) Thesis.
Ramli Nazir
1
, Wong Teck Loon
1
,
Hamed Niroumand
2
1
Department of geotechnical engi-
neering, Faculty of civil engineering,
Universiti Teknologi Malaysia
2
Post-Doc, Department of geotech-
nical engineering, Faculty of civil
engineering, Universiti Teknologi
Malaysia
Table 1. FOS of original and repaired slope for various groundwater level
Groundwater
level below
ground surface
(m)
Factor of Safety (FOS)
Original slope
Repaired slope
(CBP wall)
Repaired slope
(anchored steel
sheet pile wall)
0.15
0.905
-
-
2.8
1.456
-
-
3.0
1.643
2.495
2.450
6.0
1,755
2.629
2.596
9.0
1.829
2.661
2.631
12.0
1.873
2.753
2.669
Figure 5. Graph FOS versus groundwater level below groundwater surface.
We’ll feature your
geotechnically related
photo on our cover page !
news
GEOTECHNICAL
Now online at
www.geotechnicalnews.com
Volume 30 • Number 3 • September 2012
G
E
O
T
E
C
H
N
I
C
A
L
n
e
w
s
1
9
8
2
-
2
0
1
2
T
H
I
R
T
Y
Y
E
A
R
S
O
F
P
U
B
L
I
S
H
I
N
G
n
G
e
Online
your cover
photo here
GET THE BIG PICTURE . . . and send it in!
Submit suitable digital images as jpgs at 300 dpi;
image size 8.5” x 11” (portrait).
If submitting smaller images that require enlargement, please
use higher resolution.
Include photography credit and contact information.
Send digital files to
gn@geotechnicalnews.com
.
State subject as :
Cover Photo