Aiming at the safety problem of ship mooring stability in the intermediate channel with a combination arrangement of 1,000-ton class ship locks and ship lifts,a planar two-dimensional turbulence mathematical model is used to study the influence of channel width,initial water depth and ship lock discharge time and other parameters on the ship mooring stability.The formula for calculating the average flow rate of maximum discharge that a ship can withstand is proposed.The results show that:1) The maximum flow velocity and maximum gradient in the berthing section showed the process of first increasing and then decreasing with the water discharge from the ship lock,and the shorter the discharge time,the earlier the peak of the maximum flow velocity appeared;the smaller the initial water depth,the later the maximum gradient peak appeared.2) As the width of the intermediate channel,initial water depth,and ship lock discharge time increase,when two of these parameters remain constant,the longitudinal mooring force of the ship decreases in a negative power function relationship with the third parameter.3) Under the same section coefficient of channel,the longitudinal mooring force increases linearly with the increase of the average discharge flow rate of the ship lock.The maximum average discharge flow rate that a ship can withstand is increased linearly related to the section coefficient.The research results can provide a theoretical basis for the formulation of safety standards for ship mooring in intermediate channels under the combined arrangement of ship locks and ship lifts.