Abstract:The proposed Huai’an East Shiplock is located in the south bank of floodway of Huai River,closed to the irrigation canal and Yundong sluice.Effected by the flood of irrigation canal,the flow condition in upstream navigation channel do not meet the requirements of the specifications,therefore separation levee needs to be constructed.By using numerical simulation methods,the influence laws of the upstream separation levee structure,length,permeability,and dredging measures of the ship lock on the navigation water flow conditions are studied.The results indicate that maximum crossflow is at the head of the separation levee under the flood of irrigation canal.With the shortening of upstream separation levee,the maximum transverse velocity decreases and the range of transverse velocity remains basically unchanged.When permeable structure is adopted,the maximum transverse velocity has no evident changes and the range increases obviously.The combined use of diversion pier and separation levee and the increase of permeability of separation levee can effectively reduce the transverse velocity at entrance area.The dredging in front of Yundong sluice can reduce the flow into the upper entrance area and weaken the transverse velocity.The research can provide technical support for the design of separation levee of ship lock.
