Investigation and treatment of problematic foundations for storage dams: Some experience

Abstract

Certain geological conditions require specific efforts in exploration, sampling and testing to obtain representative material parameters. Whereas in many geological environments already routine classification systems offer a practical approach to initial site characterization, other geological environments cannot be treated in a standardized way. The paper selects two geological regimes to illustrate potential pitfalls affecting the comprehensive identification and characterization of a dam site: sites with important development of residual soils, sites in possibly karstic environment. Case histories exemplify concerns related to these environments.