Aiming at the characteristics of regulating structures in the 12.5 m deep-water channel project (phase II) at Luochengzhou section in the Yangtze River below Nanjing,we adopt a new type of inverted T-shaped member mixed dam to replace the riprap slope dam at the dam height from 3.0 m to 6.5 m section.We analyze the stability of the structure under the action of wave and current by theoretical analysis using the flow force across dam crest and Goda formula.We also use the three dimensional physical model test to verify the stability of the mixed dam structure under the combined action of wave and current,and the result is judged as stable.The new type of inverted T-shaped member mixed dam reduces the amount of block stone,which is beneficial to ease the difficulty of supply of stones and adapt to environmental protection requirements,while it can reduce the construction time on water and accelerate the construction progress.The structure has successfully applied for utility model structure patents,which can provide guidance and reference for similar projects.