Municipal drainage concrete system with flushing function and flushing method thereof

The invention provides a municipal drainage concrete system with a flushing function and a flushing method thereof.The drainage system comprises a pool body, a partition wall, a first cover plate, a second cover plate, a drainage pipe and a door opening assembly, and the partition wall is arranged in the pool body and divides the pool body into a sedimentation pool and a flushing pool; filter holes are formed in the bottom end of the partition wall; the sedimentation tank is communicated with the flushing tank through the filter holes; the first cover plate is mounted at the top end of the sedimentation tank; a water passing hole is formed in the first cover plate; the second cover plate is mounted at the top of the flushing tank; the drainage pipe is arranged at the lower part of the flushing tank and is communicated with the flushing tank; a cover plate is arranged at the inlet end of the drainage pipe, and the door opening assembly is arranged in the flushing pool, connected with the cover plate and used f