FSBEI HPI Novochercassk State Land Reclamation Academy
Author list of organization
List of articles written by the authors of the organization
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HYDRAULIC DESIGN OF LINEARLY DISTRIBUTED RELEASES OF STORED WATER DISCHARGES
Description
The purpose of the article is to develop methods for hydraulic design of extreme discharges and water depths in critical gage lines of waterways diverting water from spillways for the accepted law to regulate linearly distributed releases of stored water discharges. The task of control for linearly distributed releases of stored water discharges is based on hydraulic design for the process of propagation and transformation of long waves described with Saint Venant equations. These equations are nonlinear and have no accurate solution in general case. To get approximate solutions they are linearized. It is established that the task of integration for these equations supposes to get their preliminary solution in the form of complete integral. Applying the complete integral theory we get analytical solution that describe the process of transformation for one direction waves moving in infinitely long prism canal of semi-bounded extent with initial uniform regime of water flow. An example of changes in both water discharge and flow depths in two fixed downstream gage lines of hydraulic works at the distance of 5000 and 10000 m from the initial gage line is presented. Hydraulic design was carried out according to the derived analytical formulas accepted as an example classical method of characteristics that is considered as analogous. Comparison of the design results on two methods allowed to determine the maximum relative error that does not exceeds 3,5 % for the design discharges and water depths. Introduction of the developed method for hydraulic design of linearly distributed releases of discharges in waterways diverting water from spillways will make it possible to optimize idle and non-technological stored water discharges
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WATER SUPPLY INSTALLATIONS OF MANURE COLUMNS AND THE METHODS OF THEIR CALCULATIONS
Description
The calculation of water-supply installations of ma-nure columns is presented in this article. The characte-ristics of commercially available pumps are given. The constructive features of pumps for liquids with solid inclusions are described
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HUMUS STATE OF SOILS IN CROP ROTATIONS OF DIFFERENT STRUCTURE ON COMMON BLACK SOILS
06.00.00 Agricultural sciences
Description
Based on many years balance studies, the possibility of humus stock maintenance in common black soils for crop rotations of different structures is given in the article. Fertilizer omitted crop rotations with bare fallow and without it, with perennial legumes and small variations in parts of other crop are considered
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CHANGING RICE IRRIGATION SYSTEMS SETTINGS IN OPERATION PROCESS
Description
The influence of operational factors on the throughput of rice irrigation systems is under discussion. Calculation formulas for roughness coefficient determination in riverbeds, overgrown by aquatic vegetation, are adduced
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STUDY OF PLANT FACILITIES IN CULTURE IN VITRO BY NMR RELAXATION
06.00.00 Agricultural sciences
Description
The article gives the overview of the non-invasive method of NMR relaxation and assess the efficiency of using this method in the study of cultured under in vitro plant objects on the example of Rosa hybrida plants
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INFORMATION TECHNOLOGIES OF FARMS WATER USE PLANNING
Description
The article deals with a new methodology of water use at irrigated farms of different forms of ownership by using information technologies. This new methodology provides a rational use of integrated resources, an increasing efficiency and quality of decisions
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Description
In the article, the way to solve the problem of use of energy of a waste waterway for the purpose of reception of the additional electric power, taking into account ecological factors, is offered. The offered way consists in application of the developed design of hydroelectric power station
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Description
The testing of jet pumps, installed on the recirculation line of circulation axial pumps are dealt with in this article. A number of experiments with nozzles of different diameter and installation sites have been conducted to increase the suction head of circulation pumps. The main conclusions have been done after testing
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Description
The technology of the close subsurface drainage construction with using the force-feed of the volume-filter material by the narrow-trench drainage machine bin is described in the article. The results of the field study of the drains laid by traditional and proposed technology efficiency are shown
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Description
The article describes the results of flume reinforced concrete survey carried out in Azov irrigation system and gives conclusion about their condition. It shows characteristic fea-tures of destructions for the period of fifty years of its operation. There have been given aver-age indices of reinforced concrete strenth and the question about the necessity of mainten-ance-restoration work in irrigation systems is raised.
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