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Determination of Sediment Accumulation Volume and its Deposition in the Khachen Reservoir
Abstract:
The study of silts settling nature in reservoirs and assessment of their accumulation volume are of significant importence and have direct relation to the water balance, evaluation of the actual volume for the reservoir regulation, and effective use of water resources. The purpose of this work is determination of accumulated amount of sediments and their settling pattern along the Khachen reservoir in the Republic of Nagorno Karabagh on the basis of analytic and field study. During 2012-2013 a number of field studies have been carried out designed to elucidate conditions under which mud and silt carried by the river are formed, their volume, grain-size composition, and nature of their accumulation over 50 years of the Khachen reservoir operation. In the presented developments data on water and silt flows, actual coordinates of the Khachen reservoir bottom and the banks and grain fineness measurements have been used. The study results permit to arrive at the conclusion that comparison of analytic analysis and field measurements enables to reliably evaluate the Khachen reservoir sedimentation regime, to refine geometrical characteristics of the accumulated sediments and make scientific prognostication on the further change of usable storage of the reservoir and the life of the dam and power station.
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756-759
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October 2014
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© 2014 Trans Tech Publications Ltd. All Rights Reserved
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