Hydraulic experimental research on navigation of Changzhou Hydro-junction

Changzhou Hydro-junction spans two islands and three rivers. The navigation lock is arranged in the right bank of Wai jiang river. The horizontal and reverse flow velocity of the outlet portal on the navigation lock is always the main issues of the hydraulic research on navigation lock, due to the influence of the complicated flow condition. After several measures are carried out, including the conveyance conduit applied in the head of downstream guiding dike, the spurs applied the outside of the dike and optimal operation of the lock gate. The researches show that the horizontal and reverse flow velocity of the outlet portal is effectively controlled. The effectiveness is favorable through the auto-navigate ship model test. The results of this research can be served for similar projects reference.