Drainage embankment located at intersection of reservoir and debris flow gully

A drainage embankment located at the intersection of a reservoir and a debris flow gully comprises a water-permeable base layer which comprises an earth-rock mixing layer and a water-permeable communicating layer, and the earth-rock mixing layer and the water-permeable communicating layer are arranged in a spaced mode; the water-passing surface layer is arranged on the water-permeable base layer and comprises a water diversion road surface, a torrent groove and a stilling pool; a debris flow gully is arranged on one side of the water diversion road surface and used for diversion of debris flow. The water diversion road surface is connected with the stilling pool through the torrent groove; the stilling pool is used for weakening the impact force of debris flow; wherein the permeable communicating layer is connected with the stilling pool and used for balancing the water levels on the two sides of the drainage embankment. Through the arrangement of the permeable communicating layer and the stilling pool, the d