As the last hydro-junction in the lower reach of Liaohe River, Panshan sluice blocks the migratory path of aquatic organisms in the estuary, changes the aquatic environment, and damages the ecological balance there. In order to mitigate the ad-verse effects of the hydraulic projects on the aquatic environment, it is proposed to build a fishway at the site of the sluice. The passing fishes, fishway structure and arrangement as well as the main designing parameters of a vertical slot fishway are analyzed and discussed. The S shape fishway is chosen because of the advantages such as tight layout, less land occupied, fish luring effect, easy construction, convenient operation and cost-efficient investment. The selected fishway is now under construction, which provides references for the design and operation of similar fishways.%盘山闸作为辽河最下游的水利枢纽,阻隔了河口水生物的洄游通道,改变了水生态环境,破坏了河口地区水生生物的生态平衡. 为了缓解水利工程对水生态环境带来的不利影响,拟在闸址处增设鱼道. 对盘山闸鱼道的过鱼对象、鱼道型式与布置以及垂直竖缝式鱼道主要设计参数进行了分析讨论,最终选择布置紧凑、占地范围小、诱鱼效果好、施工容易、运行管理方便、工程投资省的"S"型鱼道. 所选鱼道正在施工建设中,可为类似鱼道设计运行借鉴参考.
展开▼
