Nowadays,the water dynamic researches about collateral hole of bottom-brake and long-corridor filling and emptying system mainly use the physical model test and field prototype observation method,which need to consume a large amount of manpower and material resources.There are relative few researches with numerical calculation method which is fast and convenient and not affected by test conditions and the achievement effect of scale.Therefore,it is of important academic value and practical significance to do the water dynamic researches about collateral hole of bottom-brake and long-corridor filling and emptying system through the ship mooring force of lock chamber by numerical simulation,get the dynamic characteristic of systemic study and summarize the principles of arrangement,provide the theoretical basis for the design and optimization of the filling and emptying system,and provide reference for similar engineering design and construction.