Self-balancing outflow water delivery system of ultrahigh water head ship lock

A self-balancing outflow water delivery system of an ultrahigh water head ship lock comprises a lock chamber, main galleries located on the two sides of the lock chamber, a first flow dividing opening located in the middle of the lock chamber and second flow dividing openings located at the 1/4 position and the 3/4 position of the lock chamber in the length direction respectively, an outlet of the first flow dividing opening is communicated with the second flow dividing openings through a middle branch gallery, and the second flow dividing openings are communicated with a water outlet branch gallery; the middle of the water outlet branch gallery is divided into an independent upper-layer water outlet branch gallery and an independent lower-layer water outlet branch gallery through a partition plate, a water inlet of the upper-layer water outlet branch gallery is located at the end of the second flow dividing opening, and a water inlet of the lower-layer water outlet branch gallery is located at the other end