Blocking overflow dam structure

The invention discloses a blocking overflow dam structure and belongs to the technical field of design and manufacturing of hydraulic structures. The blocking overflow dam structure is low in requirement for infrastructures, simple in construction and low in building manufacturing cost. The blocking overflow dam structure comprises stone blocks and a meshed permeable framework, the stone blocks are arranged in the meshed permeable framework, and the blocking overflow dam structure is fixed in a river way or a ditch where the blocking overflow dam structure needs to be arranged outside through the meshed permeable framework; water flowing along the river way or the ditch permeates gaps between the meshed permeable framework and the adjacent stone blocks so as to flow through the blocking overflow dam structure, and solid matter or bed load mixed in water flow is filtered by the blocking overflow dam structure and is blocked at an upstream face of the blocking overflow dam structure.