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Hydraulic studies for the Taoussa project, Mali
Erpicum, Sébastien; Dewals, Benjamin; Archambeau, Pierre et al.
2013In Proceedings of Africa 2013 conference (CD-Rom)
 

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Keywords :
Composite modeling; Numerical modeling; Scale model; Physical modeling
Abstract :
[en] The Taoussa Project is a component of a large development scheme of the Niger River in the north-eastern part of Mali aiming at reducing desertification and improving socio-economic activity. It is mainly made of a rockfill dam with central core around 18 m high and 1,000 m long across the valley of the Niger River, 130 km upstream of the town of Gao in the eastern part of Mali. The dam is equipped with a 25 MW hydroelectric power plant, a lock, a dock and a spillway. The spillway is made of a gated ogee crested weir divided into 10 bays and a downstream stilling basin, with a maximum discharge capacity of 3,100 m³/s. 210 km of high tension overhead cables and a 130 km long road complete the Project. The multipurpose Taoussa dam will enable the sustainable development of the Project area by securing water resources, increasing low-water level discharges downstream, creating a link between road and fluvial transports (dock) and producing electricity. The Ministère de l’Energie, des Mines et de l’Eau du Mali - Autorité pour l’Aménagement de Taoussa -commissioned Coyne et Bellier – Tractebel Engineering in 2006 to perform the detailed studies for the Project. In this framework, the hydraulic studies have been performed by the Laboratory of Engineering Hydraulics (HECE) of the University of Liege. These hydraulic studies, depicted in details in the paper, have been carried out successively by two complementary approaches: a first step realized on the basis of numerical modelling to study the flows at the scale of the reservoir and the river, and a second experimental investigation, using a scale model, to analyse in details the spillway operation conditions. They consider varied problems from large scale flow conditions in the reservoir during the spillway operation and hydrodynamic interactions between the dam, the lock and the hydroelectric power plant to validation and optimization of the hydraulic design and dimensions of the gated spillway and the stilling basin or release conditions downstream of the project structures, including the temporary derivation stage.
Research center :
Aquapôle - ULiège
Disciplines :
Civil engineering
Author, co-author :
Erpicum, Sébastien  ;  Université de Liège - ULiège > Services généraux (Faculté des sciences appliquées) > Scientifiques attachés au Doyen (Sc.appliquées)
Dewals, Benjamin  ;  Université de Liège - ULiège > Département Argenco : Secteur MS2F > Hydraulics in Environmental and Civil Engineering
Archambeau, Pierre  ;  Université de Liège - ULiège > Département Argenco : Secteur MS2F > HECE (Hydraulics in Environnemental and Civil Engineering)
Pirotton, Michel ;  Université de Liège - ULiège > Département Argenco : Secteur MS2F > HECE (Hydraulics in Environnemental and Civil Engineering)
Vuillot, Jean-Marie;  Tractebel Engineering France
Language :
English
Title :
Hydraulic studies for the Taoussa project, Mali
Alternative titles :
[fr] Etudes hydrauliques pour le projet de Taoussa, Mali
Publication date :
2013
Event name :
Int. Conf. and Exhibition on Water Storage and Hydropower Development for Africa
Event organizer :
Int. Journal on Hydropower & Dams
CIGB-ICOLD
EEPCO
Event place :
Addis Ababa, Ethiopia
Event date :
16-18 April 2013
Audience :
International
Main work title :
Proceedings of Africa 2013 conference (CD-Rom)
Available on ORBi :
since 04 June 2013

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