Grout Curtain Construction at Tiddas Dam, Morocco

Dam foundations are generally affected by water leakage and seepage, posing a significant threat to the structure's safety. Such an artificial reservoir unconditionally assumes watertight foundation, as perfect possible, ensure its stability. This brings us back thinking about adequate treatment of foundation through injections grout curtain, which ensures watertightness ground good drainage system, together improve unacceptable mechanical hydraulic properties foundation. Our study focuses on Tiddas Dam, dam in region Khemisset located Bouregreg oued, intended supply drinking industrial Rabat Casablanca. It has been subject several geological geophysical studies characterize lithological variety known site. Environmental constraints development network fractures faults have made it necessary think innovative solution for waterproofing dam, especially right bank, ensured curtain well-defined dimensions considering all factors affecting this bank. The paper presents particularities site, design fractured environment, choices sizing methods used, well appropriate grouting formula, could optimize consistency works.