Permeable scour-resistant flow distribution dam suitable for intersection of natural main watercourse and natural branch watercourse

The utility model discloses a permeable scour-resistant flow distribution dam suitable for the intersection of a natural main watercourse and a natural branch watercourse. The permeable scour-resistant flow distribution dam comprises a dam body which is arranged at the intersection of the natural main watercourse and the natural branch watercourse along the trend line of the branch watercourse and located between the two opposite banks, the dam body is composed of a middle dam body section, a left-bank dam body section and a right-bank dam body section, the middle dam body section is arranged longitudinally, the cross section of the middle dam body section is of a trapezoidal structure, the left-bank dam body section and the right-bank dam body section are connected to the left side and the right side of the middle dam body section in the longitudinal direction, the middle dam body section is of a rockfill dam structure which is composed of stone, and the left-bank dam body section and the right-bank dam body