Relative water content of flooding riverbeds (A case study on Kura river)

Öz

In the article the reasons of flooding observing on the mouth of river Kura are investigated. It was revealed, that one of principal causes of flooding is a reduction channel capacity (water carrying abilitiy) of riverbeds. The analysis is made for the major factıors, causing reduction of channel capacity.

For prevention of flooding on regulated rivers, first of all it is necessary definition Maximum Possible Flow of water (MPF). Maximum possible flow (MPF), such maksimum value of high water, when in the river is absent flodding, high waters prolonged large quantity of water etc. Any water flow, which is more than MPF, is considered to be catastrophic flow of water. Any catastrophic flow of water is a hazardous water flow.

It is offered a method for estimation MPF. By the offered method was calculated MPF for the river of Kura on hydrological station Salyan.

Catastrophic flows, including flooding are a product of the ration observing flows and MPF. Such ration refers to as “Relative liquid water content” (Relative water content) of a riverbed. If, relative water content above unit, the catastrophic water flow in the river is observes, including flooding. If it below unit, catastrophic charges is not observes. Considering value of relative water content on regulated rivers, it is possible to do controlled release of water from reservoirs which do not cause catastrophic flows and flooding.

Keywords: Kura river, Flood, Maximum Possible Flow, catastrophic flow, Relative water content

Anahtar Kelimeler

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TAŞKIN GÖZLEMLENEN AKARSULARIN HİDROLOJİSİ (KURA NEHRİ ÖRNEĞİ)

Öz

Bu makalede Kura nehrinin mansap (ağız) kısmında meydana gelen taşkınlar incelenmiştir. Buradaki taşkınların nedeni, baraj yapımından sonra yatakta su geçirme kapasitesinin azaltılmış olmasıdır. Taşkınları önlemek için, her şeyden önce, yatak akış kapasitesinin belirlenmesi gerekir. Maksimum akış kapasitesi, akarsuyun taşkın tehlikesine ait maksimum akımı olarak düşünülmektedir. Bu çalışmada maksimum akış kapasitesinin belirlenmesine ilişkin bir yöntem önerilmektedir. Bu yöntem Kura nehrinin Salyan hidroloji istasyonu verilerine dayanılarak uygulanmıştır.

Anahtar kelimeler: Kura nehri, Taşkın, Maksimum akış, katastrofik akış, Göreli su miktarı.

Anahtar Kelimeler

• Kura nehri, Taşkın, Maksimum akış, katastrofik akış, Göreli su miktarı