EXPERIMENTAL INVESTIGATION OF THE HYDRAULICS OF POOL AND WEIR FISHWAY
Abstract
In this study, the pool and weir fishway which is the most commonly used fishway in the world and in our country, was investigated experimentally. The experiments were conducted in an open channel system. The velocity area of the flow in five pools created by using weirs was measured by using aquistic doppler velocimeter. The orifices on the weirs were reduced in the ratio of ½ that of given in the literature for the grayling (Thymallus thymallus) or the brown trout (Salmo trutta) to pass. In the experiments for a discharge value of Q=6.2 L/s, the difference between the height of the water surface of downward and upward side of the first weir was found to be 2 cm and 1 cm for the others. For Q=12.2 L/s, these differences between the water surface heights were 5.5 cm for all weirs. The maximum velocities were obtained next to downward of the orifices. Moreover, far from the high velocity areas near the orifices, lower velocity areas in the pools that fishes could rest during the passes were determined.
Keywords
Kaynakça
- AKSUNGUR, M., AK, O., OZDEMİR, A., “Nehir Tipi Hidroelektrik Santrallerinin Sucul Ekosisteme Etkisi: Trabzon Örneği”, Journal of Fisheries Sciences.com, 5, 79-92, 2011.
- SCHILT, C.R., “Developing Fish Passage and Protection at Hydropower Dams”, Applied Animal Behaviour Science, 104, 295-325, 2007.
- BLESS, R., LELEK,A., WATERSTRAAT, A., Rote Liste und Artenverzeichnis der in Deutschland in Binnenge wässern vork ommen den Rund mäuler und Fische (Cyclostomata&Pisces). In E. NOWAK, J. BLAB, R. BLESS (Eds.), Rote Liste der gefahrdeten Wirbwltiere in Deutschland-Graven, (pp. 137-156), Kilda-Verlag, Graven, Germany, 1994.
Ayrıntılar
Birincil Dil
Türkçe
Konular
İnşaat Mühendisliği
Bölüm
Araştırma Makalesi
Yayımlanma Tarihi
15 Temmuz 2016
Gönderilme Tarihi
1 Mart 2017
Kabul Tarihi
25 Mayıs 2016
Yayımlandığı Sayı
Yıl 2016 Cilt: 5 Sayı: 2