Risk assessment of rock surface spillway erosion using parametric studies

AB more dams experience spillway flows from flood events,. identrfication and analysis of erosion in auxiliary rock surface spillways has become a primary focu in maintaining, dam integrity. The spillway erosion risk assessment development for this research is based on parameters identifi,ed and discussed in previous research as the leading factors influ­encing spillway damage from erosion.
Parameters applied in this analysis were channel geometry, stream hydrology and geologic materials. Channel geometry is described by the length of the spillway and slope of the spillway floor; stream hydrology is classified by the the peak discharge and its duration; and geologic material is identified by its behavior in resisting erosion.