Arid
Impact of erosion on the silting of dams, on the recharging groundwater and on coastal marine intrusion in the Mediterranean semi-arid area: Case of Boukourdane dam (Algeria)
Tadrist, Nassima1,2; Debauche, Olivier3,4; Remini, Boualem2; Xanthoulis, Dimitri1; Degre, Aurore1
通讯作者Tadrist, Nassima
来源期刊BIOTECHNOLOGIE AGRONOMIE SOCIETE ET ENVIRONNEMENT
ISSN1370-6233
EISSN1780-4507
出版年2016
卷号20期号:4页码:453-467
英文摘要

Description of the subject. Water erosion is a particularly important issue, especially in the Mediterranean and semi-arid zone. This zone is characterized by irregular rainfall patterns, which have a considerable influence on soil loss. In mountainous areas, water erosion phenomena are accentuated by steep slopes and low ground cover. The dams draining these areas undergo siltation linked to significant erosion. The silting of the dams drastically limits their capacity and thus their operating life. When used for recharging aquifers, the resuspension of fine particles may accumulate in the recharge areas and reduce infiltration capacity by clogging soil porosity. This leads to a significant reduction of groundwater levels. Additionally, groundwater situated in the coastal zone is submitted to intensive pumping. These two phenomena make groundwater particularly sensitive to marine intrusions.


Objectives. This article aims, on the one hand to quantify the rate of siltation in the case of the Boukourdane dam (northern Algeria), which is used to recharge groundwater. On the other hand, the article also shows the reduction in permeability in the capturing field with the current management of releases.


Method. Solid rates were set in relation to the liquid flow and sediment concentration occasionally taken from the wadi. The relation established made it possible to evaluate the solid contributions to the dam of Boukourdane. The impact of the releases on recharging the well field was evaluated by grouping wells and the well field mushrooms using heuristic k-means. Regressions were applied to the piezometric variations of each group.


Results. This dam is fed by a catchment area of 156 km(2). Sediment transport was estimated from empirical formulas. The specific degradation rate was estimated at 366 t.km(-2).year(-1) during the 1993 to 2005 period. The increase in the frequency of extreme rainfall resulted in an increase in the soil erosion rate to 446 t.km(-2).year(-1) during the 1993 to 2013 period. The volume of sediments accumulated in the dam reached 8.10(4) m(3).year(-1) and 11.104 m(3).year(-1) respectively during these two periods.


Conclusions. A change in the management of current releases has a positive impact on the partial restoration of the hydraulic conductivity and de facto, on the fight against marine intrusion.


英文关键词Groundwater recharge dams sedimentation water erosion Algeria
类型Article
语种French
国家Belgium ; Algeria
收录类别SCI-E
WOS记录号WOS:000390229600002
WOS关键词SUSPENDED SEDIMENT TRANSPORT ; DYNAMICS
WOS类目Agronomy ; Biotechnology & Applied Microbiology ; Environmental Sciences
WOS研究方向Agriculture ; Biotechnology & Applied Microbiology ; Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/191832
作者单位1.Univ Liege, Gembloux Agrobio Tech, Biosyst Engn BIOSE, Axe Echanges Eau Sol Plante, Passage Deportes 2, BE-5030 Gembloux, Belgium;
2.Univ Saad Dahlab Blida, Dept Sci Eau & Environm, Fac Technol, Route Soumaa,BP 270, Blida 09000, Algeria;
3.Epuvaleau ASBL, Passage Deportes 2, BE-5030 Gembloux, Belgium;
4.Univ Mons, Fac Polytech, Serv Informat, Rue Houdain 9, BE-7000 Mons, Belgium
推荐引用方式
GB/T 7714
Tadrist, Nassima,Debauche, Olivier,Remini, Boualem,et al. Impact of erosion on the silting of dams, on the recharging groundwater and on coastal marine intrusion in the Mediterranean semi-arid area: Case of Boukourdane dam (Algeria)[J],2016,20(4):453-467.
APA Tadrist, Nassima,Debauche, Olivier,Remini, Boualem,Xanthoulis, Dimitri,&Degre, Aurore.(2016).Impact of erosion on the silting of dams, on the recharging groundwater and on coastal marine intrusion in the Mediterranean semi-arid area: Case of Boukourdane dam (Algeria).BIOTECHNOLOGIE AGRONOMIE SOCIETE ET ENVIRONNEMENT,20(4),453-467.
MLA Tadrist, Nassima,et al."Impact of erosion on the silting of dams, on the recharging groundwater and on coastal marine intrusion in the Mediterranean semi-arid area: Case of Boukourdane dam (Algeria)".BIOTECHNOLOGIE AGRONOMIE SOCIETE ET ENVIRONNEMENT 20.4(2016):453-467.
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