Structural and geomorphological controls of the present-day landslide in the Moulares phosphate mines (western-central Tunisia)

Present-day deformations occurring within both waste dump and bedrock in the Northern Table mine of Moulares, western central Tunisia, show complex landslides of kilometric dimensions. Rock bodies in this mine slide due to the shear stress concentration along a complex sliding surface. As a result o...

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Veröffentlicht in:Bulletin of engineering geology and the environment 2016-11, Vol.75 (4), p.1459-1468
Hauptverfasser: Dhahri, Ferid, Benassi, Ramdhane, Mhamdi, Abdelkader, Zeyeni, Kamel, Boukadi, Noureddine
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container_end_page 1468
container_issue 4
container_start_page 1459
container_title Bulletin of engineering geology and the environment
container_volume 75
creator Dhahri, Ferid
Benassi, Ramdhane
Mhamdi, Abdelkader
Zeyeni, Kamel
Boukadi, Noureddine
description Present-day deformations occurring within both waste dump and bedrock in the Northern Table mine of Moulares, western central Tunisia, show complex landslides of kilometric dimensions. Rock bodies in this mine slide due to the shear stress concentration along a complex sliding surface. As a result of gravity displacement, these rocks display diverse associate structures such as detachment, open fractures, folds, and striated thrust planes. Interaction between predisposition factors (inherited structures, topography, slope, gravity) and triggering factors (artificial vibrations and seismotectonic activity) provided favourable conditions for the sliding. Sloping fractured ground, marly lithology and meteoric water act further to exacerbate the instability in the ground and encourage rock failure. Additionally, the seismic hazard due to the sustained tectonic activity of the Gafsa fault and the vibrations due to explosive detonation can together trigger significant landslide movement.
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subjects Earth and Environmental Science
Earth Sciences
Explosives
Foundations
Geoecology/Natural Processes
Geoengineering
Geological engineering
Geomorphology
Geotechnical Engineering & Applied Earth Sciences
Gravitation
Grounds
Hydraulics
Landfills
Landslides
Landslides & mudslides
Lithology
Meteoric water
Mines
Mining
Nature Conservation
Original Paper
Phosphates
Rock
Rocks
Seismic hazard
Shear stress
Sliding
Stress concentration
Strip mining
Tectonics
Topography
Vibration
Waste dumps
title Structural and geomorphological controls of the present-day landslide in the Moulares phosphate mines (western-central Tunisia)
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