Sludge flushing structure and method for broken surges

The sludge flushing structure comprises a retaining wall, the broken end surge, a one-way gate and an outer river main river gate, the retaining wall is arranged in the broken end surge in an S shape in the length direction of the broken end surge, and the broken end surge is divided into a first side broken end surge and a second side broken end surge in the width direction of the broken end surge; the first-side broken river inlet is connected with an outer river main river channel, the second-side broken river outlet is provided with a one-way gate, the outer river main river channel is connected with an open sea, and the water flow permitted direction of the one-way gate is from the broken surge to the outer river main river channel. As the S-shaped retaining wall is arranged in the water body of the broken-end gushing river channel, a flowing water body of the broken-end gushing river channel is formed, a suitable environment in which aquatic submerged plants and microorganisms synchronously grow is cons