Abstract
In considered article the results are presented of the carried out researches on high-mountainous lakes of the Tashkent area. Visual inspection of a modern condition of natural dams of considered high-mountainous lakes of the Tashkent oblast is carried out. On the basis of the analysis of visual inspection it is possible to note, that the common technical condition of natural dams of the submitted high-mountainous lakes safe and does not represent danger to downstream situated territories. It was carried out the modeling of occurrence of emergency situation on high-mountainous lakes of the Tashkent oblast in case of full or partial destruction of natural dams. By an available calculation method of flooding waves are determined its key parameters, height of a wave, speed of distribution of a wave of break on the certain distances and reaching time the given wave up to the certain distances. On the basis of calculation method have been calculated and put on cross-sections of the rivers Pskem and Kocy zones of possible flooding in full and partial destruction of dams of high-mountainous lakes. Results of the carried out calculations have been put on the digital map, created on platform ArcView 3.2a.
Highlights
It is necessary to note, that at present is marked the most intensive development under building and cultivation of crops the coastal zones of the high-mountainous rivers which are subject to flooding in the case of breakout of situated in up streams on them of highmountainous lakes and water reservoirs
Realization of the given research is aimed to development of the computerized decisionmaking support system for the prevention and revealing of dangerous zones of flooding, for the purposes of safe building coastal territories of valleys of the high-mountainous rivers and acceptance of the most effective architectural - planning decisions of settlements
The basic purpose of the carried out researches is: Development of a calculation technique of breakout waves of water objects and the computerized decision-making support system for the prevention and revealing of dangerous zones of flooding, for the purposes of safe building coastal territories of valleys of the rivers
Summary
It is necessary to note, that at present is marked the most intensive development under building and cultivation of crops the coastal zones of the high-mountainous rivers which are subject to flooding in the case of breakout of situated in up streams on them of highmountainous lakes and water reservoirs. To determine durability of existence of natural dams of high-mountainous lakes blocking a river beds represents the big difficulties in view of uncertainty of structure of mountain weight of a body of a natural dam Such destructions of natural dams can cause large-scale destructions and formation of flooding waves which passing downstream of rivers and can overflow the big territories and result in human victims. Tasks of the given researches was definition of parameters of flooding wave formed as a result of breaking down of natural dams of the given lakes and definition of zones of flooding by passage of flooding wave with the purpose of definition of zones of paramount evacuation of the population from settlements, located in considered territories
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