AN IMPROVED DESIGN METHOD FOR THE RIPRAP OF EARTHFILL DAMS OF LARGE RESERVOIRS

摘要

Since impounding of the various reservoirs of the La Grande Complex in northern Quebec, the riprap of several dams and dykes suffered some damage during the fifteen-year period which followed. A mandate was given to the Societe d'energie de la Baie James (SEBJ) in January 1992 to review the riprap design and evaluate the necessary repairs. The paper focuses on this work. An improved design method, for the riprap of earthfill dams of large reservoirs, is proposed based on four years of intensive studies and fifteen years of field data. Large scale model tests with irregular waves completed the studies.