AFOURER - MAROC - Geosynthetica
AFOURER - MAROC - Geosynthetica
AFOURER - MAROC - Geosynthetica
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<strong>AFOURER</strong> - <strong>MAROC</strong><br />
Nicolas de Walque
STEP <strong>AFOURER</strong><br />
Water-Basin’s<br />
Water Basin’s Characteristics<br />
Zone implantation<br />
In Morocco, close of Beni-Melal Beni Melal (Moyen Moyen<br />
Atlas), between Marrakech et Mekhnès. Mekhnès<br />
High delta T° during the day<br />
Summer - 48°C Winter -10°C 10°C<br />
Winds of 130 Km/h<br />
Station of Transfer of Energy by Pumping<br />
(STEP)<br />
Emptying of the upper water-basin water basin through<br />
power turbines in order to cover the peak of<br />
electricity need of the country. Water is<br />
stored in the lower water-basin.<br />
water basin.<br />
Filling up of the upper water-basin water basin by electric<br />
pumping of the water stored in the lower<br />
water-basin, water basin, during the night : when there is<br />
an overcapacity of electricity coming from<br />
thermal power station.
STEP <strong>AFOURER</strong><br />
Water-Basin’s<br />
Water Basin’s Characteristics<br />
Upper water-basin<br />
water basin<br />
Altitude : 1 280 m<br />
Max. water level : 12,72 m<br />
Support : old calcareous rocks<br />
(karstique karstique) ) with ponors and<br />
lapiazes. lapiazes<br />
Slope : 3H/1V - Dam : 5H/1V<br />
Area : +- + 200 000 m²
STEP <strong>AFOURER</strong><br />
Water-Basin’s<br />
Water Basin’s Characteristics<br />
Lower water-basin<br />
water basin<br />
Altitude : 480 m<br />
Max. water level : 13,22 m<br />
Support : clayey and chalky soil<br />
Slope : 3H/1V - Dam : 5H/1V<br />
Area : +- + 200 000 m²
STEP <strong>AFOURER</strong><br />
Waterproofing system on the slopes<br />
0,50 m<br />
0,20 m<br />
0,20 m<br />
Enrochement 100/200<br />
Grave concassée ou roulée 5/16<br />
Geomembrane ALKORPLAN 35053<br />
Grave concassée ou roulée 5/16<br />
Soil<br />
Geotextile PP 500gr/m²<br />
Geotextile PP 500gr/m²
STEP <strong>AFOURER</strong><br />
Stratification of the protective lays on the slope
STEP <strong>AFOURER</strong><br />
Waterproofing system on the ground<br />
0,30 m<br />
0,20 m<br />
Grave concassée ou roulée 5/16<br />
Geomembrane ALKORPLAN 35053<br />
Grave concassée ou roulée 5/16<br />
Soil<br />
Geotextile PP 500gr/m²<br />
Geotextile PP 500gr/m²
STEP <strong>AFOURER</strong><br />
Installation : test of the system
STEP <strong>AFOURER</strong><br />
Installation : test of the system
STEP <strong>AFOURER</strong><br />
Installation : lay for the support and the drainage
STEP <strong>AFOURER</strong><br />
Installation : anchor
STEP <strong>AFOURER</strong><br />
Installation : waterproofing complex (1)
STEP <strong>AFOURER</strong><br />
Installation : waterproofing complex (2)
STEP <strong>AFOURER</strong><br />
Installation : quality control
STEP <strong>AFOURER</strong><br />
Installation : geotextile
STEP <strong>AFOURER</strong><br />
Installation : first lay of protection (ground)
STEP <strong>AFOURER</strong><br />
Installation : first lay of<br />
protection (slope)
STEP <strong>AFOURER</strong><br />
Installation : first lay of protection (slope))<br />
(slope)
STEP <strong>AFOURER</strong><br />
Installation : second lay of<br />
protection
STEP <strong>AFOURER</strong><br />
Installation : connection to concrete
STEP <strong>AFOURER</strong><br />
Upper Basin<br />
Installed by VALMONT (Morroco ( Morroco)
STEP <strong>AFOURER</strong><br />
Lower basin<br />
Done by SOFIMA<br />
ENVIRONNEMENT (Morroco ( Morroco)
STEP <strong>AFOURER</strong><br />
Why ALKOR<br />
Original prescription done by EDF with PVC geomembrane and bentonite bentonite<br />
– or<br />
equivalent ;<br />
Calcareous support with risk of collapse – high elastic deformation required ;<br />
Demand of high puncturing resistance for the installation of the protective<br />
layers ;<br />
Elimination of HDPE,<br />
Elimination of TPO,<br />
thanks to high performances of PVC geomembrane ALKORPLAN<br />
(deformations tests CEMAGREF) ;<br />
Offer installation and materials by ALKOR DRAKA of the full system system<br />
with<br />
quality plan.<br />
Installation subcontracted to two Moroccan Companies, under the control of<br />
ALKOR DRAKA ;<br />
Technical assistance done by ALKOR DRAKA engineer : Daniel Fayoux Fayoux<br />
and<br />
Martin van de Graaff ;<br />
Help to the conception of the systems done by ALKOR DRAKA via Daniel Daniel<br />
Fayoux ;<br />
Supply of materials certified ASQUAL.