Aeration of skimming flow on stepped spillway combined with flaring gate piers

Hydraulic calculation method for deflecting distance of lower nappe profile in dissipator with flaring gate piers and stepped spillway;

Study on hydraulic structure of flaring gate piers locating at the upstream of stepped spillway;

Numerical simulation of characteristics of free-surface aeration on stepped spillway;

The step discharge method in deep foundation ditch water\|lowering projects is sequentially putting every finished well into water\|lowering, and predicting the down\|trend of underground water level with the parameters presented by the inversion change method according to the previous water\|level\|lowering curve.