The hydraulic performance in the suction pool of the pump house directly affects the safe and stable operation of the circulating pump. A physical model was established based on the actual project of a pump house for power plant. The effects of combinations such as the height and quantity of the diversion piers and diversion walls in the forebasin and suction pool of the pumping station, as well as the submerged depth of the water blocking breast wall, on the hydraulic performance of the suction pool in pumping station were studied through physical model experiments. The results show that no rectification measures are taken in the front pool and suction pool of the pump house, reflux vortex appears in the suction pool, and vibration noise occurs in the circulating pump. The double row diversion pier is arranged in the suction pool to increase the bottom elevation of the retaining wall in the suction pool of the pump house, while reducing the height of the second row diversion pier. The uneven distribution of flow velocity in the suction pool of sections G and H and the weighted average angle of flow velocity increase the most. The rectification effect in the suction pool of the pump house is the best. The research results can provide reference for the rectification measures in suction pool of similar pump house.

pump house  /  rectifier  /  suction pool  /  hydraulic performance