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In-Depth Information
Values
Cs
hazard
C1 conception
C2
age
C3
Foundation
C4
reservoir
Cr down-
stream
Homogeneous
embankment
without
upstream
facing,
vulnerable to
seismic loading
Unstable
banks with
dam prone
to crest
submersion
intensity
SMHV
>=
VIII MSK
Soft soil
likely to
create
problems
Built
before
1914
H
2
V
1/2
>
100,000
1
Homogeneous
embankment
without
upstream
facing, slightly
vulnerable to
seismic loading
Unstable
banks with
dam not
prone to
crest
submersion
intensity
SMHV
< VIII
MSK
Built
between
1914 and
1945
Soft soil
without a
particular
problem
100,000 >
H
2
V
1/2
<
10,000
2
Built after
1945 and
project
having
not been
examined
by the
CTPB
10,000 >
H
2
V
1/2
<
1,000
Embankment
with internal
water tightness
Standard
quality rock
Stable
banks
3
Built after
1945 and
project
examined
by the
CTPB
Embankment
by upstream
facing and
rockfill dams
with clay core
Very high
quality rock
1,000 >
H
2
V
1/2
4
Other rockfill
dams
5
Concrete or
masonry dams
other than arch
dams
6
7
Arch dams
Cv = min(C'v, C''v)
C'v = min(C2,C1−1) + min(C3,C4)-1
C''v = Ent[1+(
0.6
×× +××
−1)/2]
CC CC
2
1 0.434
Table 10.1.
Values of the coefficients quantifying seismic risk
(CTPB - Comité Technique Permanent des Barrages
(Steady-state Technical Committee on Dams))
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