Vol 18, No 2 (2017)

Innovative use of mineral resources
DEVELOPMENT OF METHODS FOR GEOMECHANICAL ENSURETHE OPERATION OF THE GAS-BEARING COAL SEAMS
Iofis M.A., Esina E.N.
Abstract

The methods of geomechanical ensuring development gas-bearing coal seams has been developed. The method of borehole mining of coal and gas from formations prone to gas and geodynamic phenomena has been scientifically substantiated and developed. Safe mining operations are ensured through the use of the internal energy of the rock mass to fracture the mineral in borehole production and its transportation to the consumer. The hydraulic mining method of sweet gas-bearing coal seams has been developed. As degassing is used preliminary unloading of coal beds and rocks by borehole coal mining from the reservoir, hazardous gas emissions. In general, the method of controlling geomechanical and gas-dynamic processes ensure the safe and efficient development of gas-bearing coal seams.

RUDN Journal of Engineering Researches. 2017;18(2):167-173
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CORROSION OF OILFIELD EQUIPMENT AND ANTICORROSION TECHNIQUES APPLIED ON THE KARAKUDUK OILFIELD (WESTERN KAZAKHSTAN)
Serebryakov A.N., Motuzov I.S.
Abstract

The article delves into the modern problem of oilfield equipment corrosion and anticorrosion techniques. The authors of the article pursued the goal of generalisation of amassed data and information about problems and perspectives of anticorrosion techniques; and tried to analyse current factual material about anticorrosion protection of the Karakuduk oilfield equipment.On the basis of multiyear functioning of the Karakuduk oilfield facility, from the beginning of commercial production in 1998, planned by NIPImunaigaz Research Institute (Aktau, the Republic of Kazakhstan) in 1996, a brief overview on primary causes of oilfield equipment corrosion was made and an array of substantial implications in the functioning of oilfield equipment caused by corrosion was pointed out.The most preeminent and effective applicable anticorrosion techniques were scrutinised. Some information about peculiar features of anticorrosion operations carried out on the Karakuduk oilfield and designed for the anticipation and deflation of the influence of corrosive processes on the key oilfield equipment of various systems: the reservoir pressure maintenance system, the oil production system, the oil gathering system, and the oil treatment system, was sequentially presented. The order of corrosion control was described. Qualitative conclusions about the effectiveness of anticorrosion preemptive measures were made; also some recommendations concerning the choice of anticorrosion techniques were given.

RUDN Journal of Engineering Researches. 2017;18(2):174-181
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Architecture and civil engineering
LABORATORY STUDY INFLUENCE OF FLOW ON THAWING OF UNDERWATER SLOPES AND THE PACE COASTAL EROSION OF RIVERS, OCCURING IN THE PERMAFROST ZONE
Debolskiy V.K., Maslikova O.Y., Ionov D.N., Gritsuk I.I., Jumagulova N.T.
Abstract
In the RUDN hydraulic laboratory researches of destruction of an underwater and surface coastal slope in the conditions imitating a kriolitozona depending on type of the soil composing a slope and a bias corner are executed. It is shown that the speed of an erosion of an underwater slope lags behind the speed of thawing of frozen soil. Work of a water stream considerably exceeds influence of other factors (temperature, wind influence, solar radiation), leading to formation of niches of washing away. Work is continuation of a research of dynamics of a coastal slope of water objects in the conditions of a kriolitozona [1-4].
RUDN Journal of Engineering Researches. 2017;18(2):182-191
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EVALUATION OF POTENTIAL WATER EROSION OF HYDROGRAPHIC DEMARCATION OF MANABI, ECUADOR
Fermin C.A., Sinichenko E.K., Gritsuk I.I.
Abstract

Water erosion is the most essential reason of destruction of soils in the whole world. So, in Asia, from the 747 million hectares of earth suffering from erosion, 60% correspond to water erosion; in Africa from 497 million, 46%; in South America, from 243 millions, 51%; in Europe, from 219 million, 53%; 106 millions in a North and Central America, Bifani (1984). The same author specifies that, the phenomenon of erosion is closely related to the phenomenon of settling. The process of water erosion is usually measured on volume alluviums. The Rivers Ganges, Brahmaputra and Huang He, transport 1451, 726 and 1887 million tons annually, respectively, as compared to the rivers Mississippi, Amazon and Nile, that carry only 97, 63 and 31 tons on the square kilometer of basin (Holeman, 1968) [9].Erosion of soil in Ecuador is a serious ecological problem that affects greater part of country in one or another degree. The use of methods of prognostication of washing off of superficial fertile layer of soils from fallouts did not get wide use, as numerous researches were directed to on a quantitative estimation speed of erosion for the different types of land-tenure in the off-shore zones of river basins, and only not many were concentrated on prognostication of erosive processes on all territory. In 1986 the Ecuadorian Center of Geographical Researches (CEDIG), for the first time conducted the row of the researches related to the capture of common data about the problems of erosion in a country [4].In this paper, based on actual data on rainfall in 51 years and the composition of the soils, was carry out the estimation of potential water erosion for Hydrographic Demarcation of Manabi (Ecuador).

RUDN Journal of Engineering Researches. 2017;18(2):192-203
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COMPOSITE STRUCTURES APPLICATION IN URBAN LANDSCAPING
Imomnazaro T.S., Tupikova E.M.
Abstract

The application of composite structures is gaining popularity because of their distinct economic advantages. Light weight, high strength, durability make these structures able to replace metal analogues. The article concerns approval of composite lawn fences in urban landscaping. The original shape of fence is suggested and designed by finite element analysis means. The cost advantage is also calculated.

RUDN Journal of Engineering Researches. 2017;18(2):204-211
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APPLICATION SLAG-ALKALI BINDER IN CONSTRUCTION
Abu Маhadi М.I., Bezborodov А.V.
Abstract

Information about slag-alkali binders and the experience of their application in construction of Russia is provided in this article. Structures, types and properties of slag-alkali concrete, and also a benefit the slag-alkali binders over a portland cement are reflected. At the end of article conclusions by results of using materials based on slag-alkali binders in various construction objects and the analysis of properties the slag-alkali binders concrete are drawn.

RUDN Journal of Engineering Researches. 2017;18(2):212-218
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THE STUDY OF BUSINESS CENTERS IN THE ARABIAN GULF: RESIDENTIAL, OFFICES, AND COMMERCIAL BUILDINGS
Razin A.D., Alhalabi Z.S., Khalil I.
Abstract

The modern architecture of the Arabian Gulf has become an international icon after the completion of Burj Al Arab in 1999. Since then, many more modern buildings were built in order to host the numerous international companies residing or branching in the Arabian Gulf especially in Dubai.This article will examine few examples of the modern architecture the Arabian Gulf, some of many amazing projects were constructed, alongside a brief introduction, what challenges the architecture faces in the Arabian Gulf, and what’s the future seems like.

RUDN Journal of Engineering Researches. 2017;18(2):219-229
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THE ENSURING ANTY-TERRORIST PROTECTION OF DIPLOMATIC BUILDINGS BY ARCHITECTURAL PLANNING DECISIONS
Razin A.D.
Abstract

The article considers the demands of ensuring the anty-terrorist protection of diplomatic complexes consisting of different types of buildings. As result of analyses systems and means for ensuring the anty-terrorist security is recommended some changes planning squares. It was proposed general planning schemas for considering problems for place systems and means for ensuring the anty-terrorist security diplomatic objects

RUDN Journal of Engineering Researches. 2017;18(2):230-235
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PROSPECTS OF MODERN TECHNOLOGIES APPLICATION IN THE CONSTRUCTION WASTE PROCESSING
Zadiranov A.N., Malkova M.Y., Nurmagomedov T.N., Dkhar P.
Abstract

The article presents the innovation of technology of recycling concrete, reinforced concrete and non-ferrous metal scrap, which are by-products of the construction industry.One of the areas of construction waste recycling may be the recycling of electrical cables for the purpose of extracting lead, copper and aluminum. Non-ferrous metals containing electric cables, wires, contacts, etc., are a small volume, but they weigh quite a significant portion of construction waste and can serve as an effective raw material for the production of secondary metals.In the article the authors developed an integrated hydrometallurgical scheme of processing cable scrap, differing from the standard pyrometallurgical methods of high degree of extraction of precious metals in marketable products; possibly containing a purity of 99.99% lead; minimum quality required of copper or aluminum contained in the cable scrap.Another promising direction of recycling of construction waste is proposed the technology of using them as consumable material in the construction of buildings, facilities or structures using 3D printing.Development and implementation of the proposed technologies for processing of construction waste will help solve several important tasks:- reduction of economic costs for disposal of construction waste;- development of new materials with specific characteristics;- reducing the time of processing construction waste;- reducing the harmful effects of construction waste on the environment.

RUDN Journal of Engineering Researches. 2017;18(2):236-244
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EFFECT OF MINERAL AND VEGETABLE OIL ON DEFORMATION PROPERTIES OF CONCRETE
Svintsov A.P., Gamal T.S., Shumilin E.E.
Abstract

The production or use of vegetable and mineral oils in industrial processes is one of the characteristics of industrial buildings. Negative impact of vegetable, mineral oil and petroleum products on concrete and reinforced concrete leads to decrease of reliability of bearing constructions of industrial buildings for appropriate purposes.The results of experimental study of influence of mineral and vegetable oil on the concrete presented. The relationship between the properties of deformation of concrete and viscosity of mineral and vegetable oils installed.The results of the study can be used in the safety assessment of industrial buildings.

RUDN Journal of Engineering Researches. 2017;18(2):245-253
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EVOLUTIONARY ALGORITHMS FOR THE PROBLEM OF OPTIMAL CONTROL
Diveev A.I., Konstantinov S.V.
Abstract

The paper describes some of the popular evolutionary algorithms: genetic algorithms, differential evolution method, particle swarm optimization and bat-inspired method. With the help of these algorithms the problem of optimal control of a mobile robot is solved. For comparison the same problem is solved with the algorithm of fast gradient descent and random search. The computational experiments showed that evolutionary algorithms provide more accurate results for the optimal control problems than fast gradient descent algorithm.

RUDN Journal of Engineering Researches. 2017;18(2):254-265
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Innovative software engineering research
USE OF TROPICAL HELIOS SOLAR PANELS FOR STAND-ALONE POWER SUPPLY TO CONSUMERS
Zhiltsov S.A., Karpushin A.A.
Abstract

More and more regions make investments in renewable power. Objectively there is a threat of climate change due to use of combustible fuel. It means that more and more countries will pass to ecologically safe and renewable power - solar, windy and tidal.With transition to the third industrial revolution, there will be a household a part of production of work. We hear about emergence of the distributed networks - Smart Grid in which each consumer of energy can become it producer. The purpose of this work is development of a design of the solar panel which can be used as the independent power supply for street lighting and stations of charging of devices in the conditions of big deviations of corners on the chart of a solar way for the regions remote from the equator. So heliotropic installation - it is an effective way to control the solar panel due to the adjustment of its position relative to the sun. This is especially true for regions far from the equator. In this paper we briefly presented the financial forecast of the solar energy market, proposed solar installation design heliotropic type and given its comparison with the classical stationary installation.

RUDN Journal of Engineering Researches. 2017;18(2):266-274
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THE EFFECTIVENESS OF INNOVATIVE TECHNOLOGIES FOR ENERGY SUPPLY OF GREENHOSES
Shatalov I.K., Shatalova I.I.
Abstract

Greenhouse industry around the world is actively introducing innovative technology. The suggested way to improve the cost efficiency of greenhouses is to use power supply systems, including heat pumps. The technology of installation and its calculations of heat pumps is well determined at present and widely used for heating houses and other premises. The paper presents the analysis of application of heat pump, working in conjunction with a heat engine for energy supply of greenhouses. We selected gas-piston engine capacity 315 kW of the company “Zvezda-Energetika” and the heat pump capacity of 523 kW of the company “Menergy” in our study. The results are: energy savings compared with traditional energy supply system of the greenhouse if using only the heat pump is 25%; if using a gas engine with heat recovery is 32%; when combined gas engine and TNU to 60%.

RUDN Journal of Engineering Researches. 2017;18(2):275-285
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Mechanical engineering and power-plant
COMPARISON OF EFFICIENCY PETROL OF ENGINE WITH STRAUTIFIED CHARGE AND AUTOMOTIVE DIESEL
Vallejo Maldonado P.R., Antipov Y.A., Oshchepkov P.P.
Abstract

Petrol engine with strautified charge has compression ratio 12-14 and air/fuel ratio 3 and more without detonation. Charge strautification increases part-load efficiency by 10-15%. Automotive diesel without supercharging has 50% smaller specific output and o 15% higher efficiency that engine strautified charge.

RUDN Journal of Engineering Researches. 2017;18(2):286-291
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