Slope failure characterization: A joint multi-geophysical and geotechnical analysis, case study of Babor Mountains range, NE Algeria
Leila Boubazine1, Abderahmene Boumazbeur2, Riheb Hadji3, Kessasra Fares1
1Jijel University, Jijel, Algeria
2University of Tebessa, Tebessa, Algeria
3Laboratory of Applied Researches in Engineering Geology, Geotechnics, Water Sciences, and Environment, Setif 1 University, Sétif, Algeria
Min. miner. depos. 2022, 16(4):65-70
https://doi.org/10.33271/mining16.04.065
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      ABSTRACT
      Purpose. The research purpose is to apply an original combined approach to the study of landslide occurrence in the Tarzoust region, based on geophysical approaches. This is extremely important because landslides damage roads and buildings in many parts of North Africa, especially in the city of Tarzoust, NE Algeria. Significant slope failures have resulted in serious disasters in the region.
      Methods. In this study we use Vertical Electric Soundings (VES) and Seismic Refraction Method (SRM) for underground exploration, as well as Electrical Resistivity Tomography (ERT) to support the latter two methods.
      Findings. The clayey nature of the terrain is confirmed, very often covered by a mantle of superficial colluvium formations. The depth of the bedrock and shear surface has been precisely determined. The ERT reveals that the terrain has already experienced instability in the past.
      Originality. The originality of this study is in the combination of data from various sources and different approaches for the purpose of planning the deployment and use of land.
      Practical implications. Our approach has proven that the combination of geological and geotechnical data with geophysical deterministic methods can help engineers and decision-makers in land management. Our recommendations consist of topographic, inclinometric and piezometric monitoring for slip development and the effectiveness of reinforcement measures for new housing, and equipment programs for regional planning.
      Keywords: slope failures, tomography, resistivity, seismic refraction, substratum
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