Based on the analysis of the relationship between the weight for stability of rock ripraps and flow velocity, a discussion was made on the stability of ripraps in plain rivers and mountainous rivers.

Character and action principle of steel cylindrical structure is presented in this paper, which is first applied successfully in wharf and breakwater foundation taking place of rubble bed.

In this paper, based on the fixed bed experiment, the flow regime near the riprap is described qualitatively, and the mechanism that the bank base of dumped riprap is brushed is discussed.