KARST SINKHOLES STABILITY ASSESSMENT IN CHERIA AREA, NE ALGERIA
Journal Title: Larhyss Journal - Year 2015, Vol 21, Issue 21
Abstract
This research work deals with the problem of karst sinkhole collapse occurring in the last few years in Cheria area. This newly revealed phenomenon is of a major constrain in land use planning and urbanization, it has become necessary to assess the stability of these underground features before any planning operation. Laboratory testing and field work were undertaken in order to determine both intact rock and rock mass properties. All the rock mechanics testing and measurement were undertaken according to the ISRM recommendations. It has been found that under imposed loading, the stability of the karst cavities depends on the geo-mechanical parameters (Rock Masse Rating; RMR, Geological Strength Index; GSI, and Young Modulus; E) of the host rock as well as the depth and dimensions of the gallery. It increases with RMR, GSI, E and depth and decreases as the cavity becomes wider. Furthermore, the calculation results show that a ratio (roof thickness to gallery width) of 0.3 and more indicate, a stable conditions. The results obtained in this work allow identifying and assessing the stability of underground karst cavities. The methodology followed in this paper can be taken as a road map in the establishment of a hazard map related to the studied phenomenon. This map will be a useful tool for the future urban extension planning in Cherea area.
Authors and Affiliations
AZIZI Y. | University centre of Tamanrasset, Algeria, BOUMEZBEURA A. | Chieckh Larbi Tebessi University, Tebessa, Algeria, MENANI M. R. | Hadj lakhdar University, Batna, Algeria, BOUCENNA F. | University centre of Tamanrasset, Algeria
Keywords
Related Articles
- EP ID EP15126
- DOI -
- Views 391
- Downloads 13
ANALYSES PHYSICO-CHIMIQUES ET BACTERIOLOGIQUES DES EAUX DE TROIS AQUIFERES DE LA REGION DE TILLABERY : APPLICATION DES METHODES D’ANALYSES STATISTIQUES MULTI VARIEES
Groundwaters constitute one of the main sources of supply in drinking water of the population of the region of Tillabery. The present study is interested in the quality of waters of three aquifers (continental terminal...
CONTRIBUTION TO THE CARTOGRAPHY OF THE GROUNDWATER QUALITY OF THE URBAN GROUP OF TLEMCEN (ALGERIA)
The existence of any kind of living is related to the presence of water. The qualitative degradation of this resource, and mainly the one underground, was observed in several cases. The pollution represents a serious...
ETUDE DE L’ADSORPTION DU BLEU DE METHYLENE (BM) A PARTIR DES SOLUTIONS AQUEUSES SUR UN BIOSORBANT PREPARE A PARTIR DES NOYAUX DE DATTE ALGERIENNE
In this study, the Algerian date stones were evaluated to preparing a biosorbent in order to use them as natural support for removal of methylene blue (MB) from aqueous solutions. In order to clarify the adsorption pro...
MODELISATION PLUIE-DEBIT DISTRIBUEE DANS DEUX BASSINS VERSANTS DE L’EST DE L’ALGERIE
The ATHYS software meets in a friendly environment and homogeneous set of spatialized hydrological models involving treatments hydro-climatic and geographic data, it allows us to apply a variety of distributed models a...
LA CONTAMINATION METALLIQUE DES EAUX DE SURFACE ET DES EAUX SOUTERRAINES DE LA ZONE MINIERE D’EXPLOITATION DES PHOSPHATES DE HAHOTOE-KPOGAME (SUD-TOGO) : CAS DU CADMIUM, PLOMB, CUIVRE ET NICKEL
This study aims to characterize the trace metal pollution (Cd, Pb, Ni and Cu) surface water and groundwater in the mining area of operation phosphates Hahotoè-Kpogamé to assess the health risk for people. Samples wer...