Construction de la digue nord de l'aménagement La Grande

摘要: LG-1 hydroelectric project, part of La Grande Complex in northern Quebec, required the construction a 2444 m long dyke on north bank. The presence sensitive marine clay, with deltaic and river sand silt deposits top clay central terrace, called for special design features. These included side berms depression to ensure stability cement–bentonite cutoff through terrace. This paper describes different phases emphasis foundation treatment techniques. Key words: bentonite, cement, construction, cutoff, dyke, excavation, foundation, slurry, trench.