Debris Flows at the River Mletis Khevi (Greater Caucasus Mountains, Georgia) and its Assessment Methods

The erosional debris flow processes on the right side of the riverbed of Mletis-Khevi, a tributary of the Tetri Aragvi, are assessed on the basis of field and laboratory studies. The values of the mountain slope erosion in the Mletis-Khevi catchment area have been determined on the basis of field studies, taking into account the time factor and the extent of slope damage. Dependences are derived by means of the maximum discharge of debris flow of various intensities. Furthermore the volume of transported debris flow mass is calculated. A physical-mechanical and chemical analysis of the debris flow mass has been carried out in the laboratory. The results can be used at a subsequent stage for predicting the various basic characteristics of debris flows. --debris flow,discharge,erosion coefficient,catchment area

ირიგაცია, დრენაჟი, ეროზია

სახელმძღვანელო “ირიგაცია, დრენაჟი, ეროზია” შედგენილია მოქმედი აკრედიტებული პროგრამის “სასოფლო-სამეურნეო მელიორაცია” მიხედვით და გათვალისწინებულია საქართველოს ტექნიკური უნივერსიტეტის სამშენებლო ფაკულტეტის ჰიდროინჟინერიისა და აგრარული მეცნიერებებისა და ბიოსისტემების ინჟინერინგის ფაკულტეტის აგროინჟინერიის ბაკალავრებისათვის, აგრეთვე აგროეკოლოგიის, საინჟინრო ეკოლოგიისა და ჰიდრომელიორაციის დარგში მომუშავე მაგისტრების, დოქტორანტებისა და ახალგაზრდა მეცნიერთანამშრომლებისათვის. იგი ასევე შეიძლება გამოიყენოს სოფლის მეურნეობისა და საბუნებისმეტყველო დარგების, მათ შორის, გარემოს დაცვის სპეციალისტებმა და დაინტერესებულმა სპეციალისტებმა

Engineering and technical structures of the Zhinvali hydroengineering complex and assessment of the state of their management

Based on theoretical and long-term field researche, the article provides assessment of the management of engineering and technical structures of the Zhinvali hydroengeneering complex. The methodology and quantitative assessment of the risk of loss resulting from accidents at hydraulic structures are de-scribed. The implementation of the recommendations of scientific researche related to the protection of the waters of the Zhinvali reservoir will allow to extend its service life for at least another twenty years, which, subject to one-time-only investments in protection measures in the amount of 35 million GEL (1 USA Dollar - 2,90 GEL), will provide an opportunity to bring the amount of direct and indirect loss prevented to 25 million GEL per year. The calculation showed that rational management of the reservoir will allow, with an internal rate of return (IRR) of 42%, to accumulate net present value (NPV) in the amount of 87.6 million GEL over twenty additional years of operation, which in turn indicates a high efficiency of investments in the protection of reservoir waters

Экологические Проблемы Реки Дуруджи И Инновационные Природоохранные Мероприятия

ნაშრომში 2000-2017 წლებში ჩატარებული საველე ექსპედიციური და თეორიული კვლევების ანალიზის საფუძველზე შეფასებულია მდინარე დურუჯის წყალშემკრებ აუზში მიმდინარე ეროზიული პროცესები და დამუშავებულია მათი პროგნოზირების მეთოდები.The work gives the evaluation of the erosive processes taking place in the water catch basin of the river Duruji and develops the methods to forecast them based on the field-and-expedition and theoretical studies of 2000-2017.В настоящей работе на основании анализа полевых экспедиционных и теоретических исследований, проведенных в 2000-2017 годах, оценены эрозионные процессы, происходящие в водосборном бассейне реки Дуруджи и разработаны методы их прогнозирования

An innovative construction for regulating snow avalanches and developing a method for its design

The article discusses the sensitive areas of snow avalanches formed in the mountain landscapes of Georgia and presents their brief geographical, climatic-meteorological and hydrological assessments. By referring to global practices, the characteristics of different constructions of snow avalanche buildings and their reliability are presented. A constructive description of an innovative snow-avalanche-proof building, certified by a Georgian patent certificate, is presented. An innovative method for the design of the building was developed and the construction of the structure was carried out in the Kobi-Gudauri alpine zone of the Georgian military road at an altitude of 2238 m above sea level

Private solutions to design an innovative engineering structure for efficient debris flow control

There are hardly any sections in a debris flow channel, where flow movement, except for exceptions, would have a constant hydraulic regime and typical parameters. Therefore, in order to select regulating measures, the urgent means of assessment of the flow regime to totally cover its anomaly is needed. The solution of this question is associated with the full compatibility of laws with soil mechanics and hydraulics. Recently, the engineering problems related to debris flow, based on various considerations, have been realized by integrating the obtained differential equations. Especially important are the possibilities of a debris flow moving regime in prismatic beds described by the system of differential equations of various modifications. If rheological properties are neglected in the above equations, they are completely transformed into differential equations of non-uniform motion of Newtonian fluids. By considering the above-mentioned, the paper gives the calculation methods and practical example of designing an innovative debris flow control barrage, which was realized in the bed of the Mletis Khevi river gorge