Probabilistic Scour Model for Head-cut Migration in Unlined Chutes

This paper presents a new cloud-based 2D engineering model for digital assessment of rock scour downstream of dam spillways and in unlined chutes. The model makes use of the Monte-Carlo method to perform a large number of consecutive runs in which the main input parameters are stochastically determined. A probabilistic-based scour assessment is so obtained. Two case studies are presented: plunge pool scour by overflowing jets and unlined channel scour downstream of a stilling basin.