Vertical slit type fishway rest pool

Abstract

The invention relates to a vertical slit type fishway rest pool. The vertical slit type fishway rest pool comprises an upstream partition board, an upstream guide plate, a downstream partition board and a downstream guide plate. The upstream partition board, the upstream guide plate, the downstream partition board, the downstream guide plate and the sidewalls on the two sides of a vertical slit type fishway form a pool body. The upstream partition board and the downstream partition board are arranged on the sidewall on the same side. The upstream guide plate and the downstream guide plate are arranged on the other sidewall. The bottom face of the pool body is horizontal or the gradient of the bottom face of the pool body is smaller than that of the bottom face of the pool. The width of the pool body is equal to that of the pool. The length of the pool body is twice that of the pool. According to the vertical slit type fishway rest pool, the bottom of the pool body is horizontal or approximately horizontal; on the precondition of not increasing the width of the fishway, the length of the pool is increased to enable the flow velocity of water in the rest pool to decline so that fishes can have a good rest in the rest pool and then continue swimming upstream after physical strength is recovered. The rest pool with the fishway not widened has an important significance in the construction process of a reservoir with complex terrains, is applicable to various terrains and solves the problem that the vertical slit type fishway rest pool is hard to arrange.

Description

technical field [0001] The invention relates to a fishway rest pool with vertical slits, which is a hydraulic facility and an environmental protection facility for sluices and dams. Background technique [0002] For high-head and long-distance fishways, in order to ensure that the fish passing through them can complete their long-distance upward tracing process, most of the fishways with vertical seams are equipped with rest pools at the request of ecology experts, but there is currently insufficient research on rest pools. The water flow structure in the rest pool is unreasonable, and it is difficult to achieve sufficient rest for the fish during the swimming process, and even the fish lose their direction during the swimming process, resulting in death. The patent with the publication number CN202745019U discloses an ecological fishway, which involves the concept of a rest pool, which provides a resting place for fish by widening the pool. However, this type of rest pool ...

AI Technical Summary

Problems solved by technology

However, this type of rest pool is only suitable for relatively open site conditions, and it is difficult to use it in narrow terrain conditions such as mountains and valleys. In addition, the partitions of the ecological fishway, including the rest pool, all adopt the pier shape with a hook structure, which is relatively large. The long hooked pier not only compromises the integrity of the rest area, but also increases the potential for damage to the fish

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