Influence of geomechanical and hydraulic parameters of the fractured rock on the evolution of underground karst cavities in Cheria area, NE Algerea

Abstract

The main goal of this study is to analyze the surface part of the karst and some underground characteristics of Eocene karst system.The Karst cavities are widespread in the Eocene forming the upper formation under the Quaternary cover in the Cheria syncline. The Eocene limestone aquifer is intensively fractured and karstified. Major sub surface karst cavities is located nourthen and centre part of Cheria syncline.Hence, cavity roof thickness are varied with geometrical and geomchanical parameters on the fractured rock. The depth of the karstified zones depends on the geomechanical parameters, which is controlled by the fracture aperture distribution (Renshaw. DOI: 10.1029/ 95 JB 02159. ISSN: 0148-0227.1995)...