Vertical clearance type fish passing effect experimental system

The invention relates to a vertical clearance type fish passing effect experimental system which comprises a water inlet system connected with a water circulation system, a water blocking system connected with the water inlet system and a water outlet system connected with the water blocking system. The water circulation system comprises a water suction pump, an overground water pool, an underground water pool, an upstream control valve and a downstream control valve. The water inlet system comprises an upstream flashboard and an upstream fish resting pool. The water blocking system is composed of a plurality of stages of fishponds. The water outlet system is composed of a downstream fish resting pool, a downstream water flow buffering box and an underground water pool. The vertical clearance type fish passing effect experimental system can be used for studying and analyzing hydraulics turbulent energy dissipation problem, a fish migration problem and hydraulics experimental model demonstration, due to the fact that the experimental system and an actual fishway partial project are built with a proportion of 1:1, the flow regime of the water flow in a fish passing facility is truly reflected, and the reliability and the accuracy of a water flow field in a fishway and the analysis of the fish passing effect are further guaranteed.