Geophysical, geotechnical, and speleologic assessment for karst-sinkhole collapse genesis in Cheria plateau (NE Algeria)

• Autorzy: Mouici R. , Baali F. , Hadji R. , Boubaya D. , Audra P. , Fehdi C. , Didier C. , Stéphane J. , Bruno A.

Identyfikatory

DOI

10.5277/msc172403

• Języki publikacji: EN

Abstrakty

EN

Several sinkhole collapses were occurred in the many sites in urban areas and/or their rural periphery; in NE Algeria, in the last few years. The abrupt collapse causes damages to properties, infrastructures, and even lives. The most spectacular one occurred in February 2009 inside the Cheria city, Northwest of Tebessa department, with a diameter of more than a hundred meters. This abrupt collapse is due to a sudden rupture of the roof of a large underground karst cavity. It caused panic-stricken among the population living near the crater. In order to investigate the origin of this phenomenon, we combine several geophysical and geotechnical methods, such as Ground Penetrating Radar, Electrical Resistivity Tomography, Standard Penetration Test, Mechanical Drill Core, Cave Survey Photogrammetry, etc. It appears that each method may provide specific information. Their comparison allows to precise the results itself, the limits and the application field of each. Consequently a number of open karst voids and disturbed areas were detected in the study area. The results show that sinkholes originate from two different processes: a brutal collapse of karst voids located at shallow depth, by agravitational effect especially building surcharge on top of limestone. And progressive piping and erosion of the thick gravel cover, especially after storms making large depressions. The drawdown of the aquifer following intense pumping could have accelerated these processes. The extension plans of the study area could be established with this methodical acquaintance of the underground conditions of the karst cavities such as: occurrence, depth, geometry and dimensions.

Słowa kluczowe

EN

GPR; ERT; SPT; Cave Survey Photogrammetry

• Wydawca: Wydział Geoinżynierii, Górnictwa i Geologii, Instytut Górnictwa Politechniki Wrocławskiej
• Czasopismo: Mining Science
• Rocznik: 2017
• Tom: Vol. 24
• Strony: 59--71
• Opis fizyczny: Bibliogr. 21 poz., rys. tab.

Twórcy

autor

Mouici R.

• Department of Earth Sciences, Water and Environnement Laboratoiry, University of Tebessa, Algeria.

autor

Baali F.

• Department of Earth Sciences, Water and Environnement Laboratoiry, University of Tebessa, Algeria.

autor

Hadji R.

• Department of Earth Sciences, Institute of Architecture and Earth Sciences, Setif University, Algeria.

autor

Boubaya D.

• Department of Earth Sciences, Water and Environnement Laboratoiry, University of Tebessa, Algeria.

autor

Audra P.

• University of Nice Sophia-Antipolis, Polytech’Lab, 930 rte Colles 6903 Sophia-Antipolis, Nice, France

autor

Fehdi C.

• Department of Earth Sciences, Water and Environnement Laboratoiry, University of Tebessa, Algeria.

autor

Didier C.

• Lab EDYTEM, University Savoie Mont-Blanc, CNRS, Pôle Montagne, 73376 Bourget-du-Lac, France

autor

Stéphane J.

• Lab EDYTEM, University Savoie Mont-Blanc, CNRS, Pôle Montagne, 73376 Bourget-du-Lac, France

autor

Bruno A.

• Aix-Marseille University, CEREGE - Centre Saint Charles, Case 67 - 3 place V. Hugo, 13331 Marseille.

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).