Effect of lithological and geotechnical characteristics on the generation of debris flows in Matmata, southeastern Tunisia

• Autorzy: Bensalem Hassen , Amamria Soulef , Bensalem Mohamed Sadok , Meisina Claudia , Hamdi Noureddine

Identyfikatory

DOI

10.24425/sq.2024.149970

• Języki publikacji: EN

Abstrakty

EN

The Matmata region, located in the south of Gabès (Tunisia), experienced significant damage during the floods of the Beni zelten wadi on November 11, 2017. These floods, exacerbated by the steep slopes and underlying soil conditions, led to the occurrence of debris flows, posing a threat to road infrastructure. The generation of debris flows is closely linked to intense rainfall events that surpass the soil capacity to retain water. To gain insights into the behaviour of the soil samples, various characteristics were analysed, including texture, clay mineralogy, grain size distribution, and Atterberg limits. The results showed that the mean liquid limit values ranged from 38% to 62%, while the mean plasticity index of the materials in the landslide-prone areas varied from 18% to 27.9%. These findings indicate presence of clay formations and highlight a significance of the increased soil clay content as contributing factors to landslide development. The X-ray Diffraction analysis revealed that gypsum, quartz, phyllosilicate and calcite minerals were the most abundant minerals identified in the soil samples. This work shows the importance of clay mineral and geotechnical parameters of the soils in the occurrence of landslides and predicting debris flows occurrences in the Matmata region.

Słowa kluczowe

EN

beni zelten wadi; atterberg limits; XRD analysis; grain size distribution; debris flows

• Wydawca: Institute of Geological Science Polish Academy of Science
• Czasopismo: Studia Quaternaria
• Rocznik: 2024
• Tom: Vol. 41, Nr 1
• Strony: 23--35
• Opis fizyczny: Bibliogr. 36 poz., rys.

Twórcy

autor

Bensalem Hassen

• Higher Institute of the Sciences and Techniques of Waters of Gabes, University of Gabes,6072 Zrig Gabès, Tunisia
• Laboratory of composite materials and clay minerals, National Center for Research in Materials Science Borj Cedria(CNRSM), B.P. 73‑8020 Soliman, Tunisia

autor

Amamria Soulef

• Faculty of Sciences Gabes,University of Gabes, 6072 Hatem BETTAHER Erriadh city Gabes, Tunisia

autor

Bensalem Mohamed Sadok

• Faculty of Sciences Gabes,University of Gabes, 6072 Hatem BETTAHER Erriadh city Gabes, Tunisia

autor

Meisina Claudia

• Department of Earth and Envirnmontal Sciences, University of Pavia, 27100 Via Ferrata 9 Pavia, Italy Hamdi Noureddine

autor

Hamdi Noureddine

• Higher Institute of the Sciences and Techniques of Waters of Gabes, University of Gabes,6072 Zrig Gabès, Tunisia
• Laboratory of composite materials and clay minerals, National Center for Research in Materials Science Borj Cedria (CNRSM), B.P. 73‑8020 Soliman, Tunisia

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