Study on run mode of upper and lower lock with intermediate channel

Distributed navigation steps with intermediate channel is one layout style of high dam navigation structure.Its characteristic is dispatching flexible and traffic capacity larger,etc.But when upper and lower lock running with different mode,filling and emptying system interacting,the current in intermediate channel is very complex.It has effect on berthing and navigation conditions of ship(fleet) and has bad effect on lock run mode and miter lock gate.By means of the physical model test with the scale of 1:40,under the condition of single filling and empty and simultaneous service and stagger running,the hydraulic characteristics in the intermediate channel of regular rectangle between two ship locks are studied.The simultaneous service is denied.Under the specified conditions,the optimal stagger time is found out for channel length of 2 000 meters and 1 400 meters.Compared with the hydraulic characteristics of three run modes comprehensively,the run mode of filling after emptying is recommended finally.