Zerrouki, Hichem Université Kasdi Merbah Ouargla - Département des Sciences de la terre, Algérie , Hafid, Feyrouz Université de Tébessa - Département des Sciences de la terre, Algérie , Lassaad, Ghrieb Université 8 Mai 1945 Guelma - Département de Biologie, Algérie , Djabri, Larbi Université Badji Mokhtar - Département de Géologie, Algérie

Aperçu géomorphologique et hydrologique de la grotte de Bouakkous (Hammamet-Tébessa, Algérie)

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The studies on the understanding and functioning of karstic aquifer are limited. Indeed, the latest studies on the cave ofBouakk:ous are very old. This situation prevents to take the study. To perform our work, we focused on the external morphology of the cave. The observation shows a wavy morphology reflecting the presence of small sinkholes; they allow the infiltration of water into the cavities. The study also shows the presence of springs on the right side of the cave below the epikarst. This observation allowed us to infer an asymmetry of cracking. Indeed, the left handside of the cave is sealed, no flow is observed. However, the right side is cracked, which promotes infiltration and water movement. The water supply comes from either direct infiltration of rainwater or indirectly from the Jebels surrounding the cave, such as Jebel Tazbent, located at higher altitudes. Streamflow gauges out of the cave vary according to season and rainfall. Thus, at the out let of the cave, the flows are important and can reach 1913 l/s. However, at the river Bouakk:ous which characterizes the downstream zone, the flow does not exceed 10 l/s. The discharge measurements show differential infiltration of 54 l/s. The study of conductivity variation with altitude shows that water from the four sources have the same origin, with a gradient of lμs/cm/m.

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Cave , Sinkhole , Djebel , Flow , Karst

Revue Des Sciences Et De La Technologie, Synthèse

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