A device for the descent of aalen, on hydraulic structures

摘要

A device (10) for the descent of aalen, on hydraulic structures has a in the upstream channel (o) which is arranged in the fish system (20) and a diversion system (50) for bypassing the hydraulic structure, for the reception of a eels in the upstream channel (o) at least one collecting line (30) with at least one opening (31), which in the area of the sole (b) of the flowing in the direction of flow (s) watercourse (f) is arranged so that the eels of the over-ride system is also actually finding, the invention provides the upstream of the openings (31) of the collecting line (30) a flow shadow generating element (40) is arranged. Thus pressure differences between the upstream channel (o) and water (u) for the eels gently, can be compensated for, the invention provides for the diversion of the system (50) a bypass line (51) with a pump - and flushing system (70) before.