Dam of Ksob
which constitutes the main contributor, comes
irrigation. The progressive silting up had brought
from Sétif ’s high plateaus.
the dam’s capacity from 12 million cubic meters to
It drains a basin including the depressions of
million cubic meters.
Medj ana at the North of Bordj Bou—Arreridj at the
To correct this situation, a 15—meter over—elevation
Northern border of Maâdid. The basin reaches
was built in order to reach 29 million cubic meters
1500 square kilometers. The length of the main
_whilst maintaining the dam’s activity. Such over—
Thalweg is 83 kilometers. The average altitude is 1
elevation is designed in triangular walls holding
070 meters. The highest peaks are Djebel Nechar
_
the vaults and based on the initial dam’s crown, as
(1885 meters) and Saet El Hamra (1789 meters).
well
as
on
crosswise
crutches
propped up
The basin’s average temperature is about 15°C.
downstream to the buttresses. To consolidate
The precipitations are weak (400 millimeter in
everything, the buttresses are pre-stressed thanks
average). Most of the contributions are made by
to cables anchored on the massif counterweights
oods all over the year. The annual average is 51.5
cast at the bottom of the vaults in the buttresses
million cubic meters with a maximum of
121
top parts.
’
'
million
meters
and a minimum Of
121
Completed, the piece of work includes 4«2 vaults
million
cubic
meters.
The
average
annual
'
_
_
contribution is 51.5 million cubic meters.
supported by
shore weight
abutments and M
buttresses including 30 which are of the old type
Before its over—elevation, the dam was 31—meter
buttresses. Two footbridges ensure the stability
high and 250—meter long. Its main part is of the
with an anti—seismic wall linking the buttresses’
multiple vault type on buttresses, framed with two
peaks between them and with various diaphragms
abutinents forming a weight dam. It was made of a
and reinforcements crossing the dam from one
series of 37 thin buttresses at 6 meters of interval
edge to another.
from each other and holding 38 continuous
The
discharges include two middle-distance
reinforced concretevaults.
sluiceways tted with valves, jacks, three surface
A piece of work made up
of six sluiceways tted
sl‘uiceways tted
with valves and cable winches
with automatic valves and connected to the old
with a debit of 1 900 cubic
meters per second.
provisory diversion galleries ensures the discharge
Ksob has playe da very important role in the tree—
of ood
waters with a debit of 1200 cubic meters
farming development in M’sila, thanks to the
per second.
The dam’s ridge is developed
as
a
construction of this dam, a new intensive farniing
discharge threshold, 2 sluiceways ensure the
activity has developed.
emptyin—g, each including a reinforced concrete
-
funhel iipstrea—in to the vaults._ \Vater—taking
Nestled in a rocky citadel, it seems that theKsob
'sèCtions are usédtdextract the waters necessary to
wants to
watch over the valley to protect life there.
which constitutes the main contributor, comes
irrigation. The progressive silting up had brought
from Sétif ’s high plateaus.
the dam’s capacity from 12 million cubic meters to
It drains a basin including the depressions of
million cubic meters.
Medj ana at the North of Bordj Bou—Arreridj at the
To correct this situation, a 15—meter over—elevation
Northern border of Maâdid. The basin reaches
was built in order to reach 29 million cubic meters
1500 square kilometers. The length of the main
_whilst maintaining the dam’s activity. Such over—
Thalweg is 83 kilometers. The average altitude is 1
elevation is designed in triangular walls holding
070 meters. The highest peaks are Djebel Nechar
_
the vaults and based on the initial dam’s crown, as
(1885 meters) and Saet El Hamra (1789 meters).
well
as
on
crosswise
crutches
propped up
The basin’s average temperature is about 15°C.
downstream to the buttresses. To consolidate
The precipitations are weak (400 millimeter in
everything, the buttresses are pre-stressed thanks
average). Most of the contributions are made by
to cables anchored on the massif counterweights
oods all over the year. The annual average is 51.5
cast at the bottom of the vaults in the buttresses
million cubic meters with a maximum of
121
top parts.
’
'
million
meters
and a minimum Of
121
Completed, the piece of work includes 4«2 vaults
million
cubic
meters.
The
average
annual
'
_
_
contribution is 51.5 million cubic meters.
supported by
shore weight
abutments and M
buttresses including 30 which are of the old type
Before its over—elevation, the dam was 31—meter
buttresses. Two footbridges ensure the stability
high and 250—meter long. Its main part is of the
with an anti—seismic wall linking the buttresses’
multiple vault type on buttresses, framed with two
peaks between them and with various diaphragms
abutinents forming a weight dam. It was made of a
and reinforcements crossing the dam from one
series of 37 thin buttresses at 6 meters of interval
edge to another.
from each other and holding 38 continuous
The
discharges include two middle-distance
reinforced concretevaults.
sluiceways tted with valves, jacks, three surface
A piece of work made up
of six sluiceways tted
sl‘uiceways tted
with valves and cable winches
with automatic valves and connected to the old
with a debit of 1 900 cubic
meters per second.
provisory diversion galleries ensures the discharge
Ksob has playe da very important role in the tree—
of ood
waters with a debit of 1200 cubic meters
farming development in M’sila, thanks to the
per second.
The dam’s ridge is developed
as
a
construction of this dam, a new intensive farniing
discharge threshold, 2 sluiceways ensure the
activity has developed.
emptyin—g, each including a reinforced concrete
-
funhel iipstrea—in to the vaults._ \Vater—taking
Nestled in a rocky citadel, it seems that theKsob
'sèCtions are usédtdextract the waters necessary to
wants to
watch over the valley to protect life there.