This model takes into account non-equilibrium transport of non-uniform bedload and introduces the mixed layer model to calculate the changes of bed material grain class.

Their hybrid system characteristics are considered, and a multi-layers mixed model, which consists of process layer, supervisory layer and scheduling layer, is proposed.

The scar eliminating silica gel film of the utility model (additional name ' a scar contact') comprises a bottom skin layer (1), a terylene net layer (2) and a mixed layer (3).