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MODELING OF OPERATING PARAMETERS OF MINING MACHINES WITH VIBRATION ON THE ROCKS

TARASOV M. A.

One of the basic industries development aspects is to increase the completeness of minerals extraction from the subsoil in the extraction of coal from thin and ultrathin layers. At the same time, the creation of modern efficient mining equipment for the development of lowpower coal seams is becoming one of the most important problems of coal production. The solution to this problem is possible by combining plow and combine technology with the differentiation of operating parameters of the excavators. In the present work, the idea of improving the efficiency of the dredging machine based on the use of technology of coal extraction in lava by vibration. The stages of the research included the development of a mathematical model of the functioning of the working body of the machine and determine the energy intensity of the destruction of rocks. It was found that the reduction in the specific energy intensity of the process of separation of minerals from the face can be achieved through the use of units that combine the advantages of treatment combines and plow plants. It is determined that the condition for the effective destruction of the coal mass is a mode of operation when the trajectory of the cleaver is not ahead of the path of the cutter. Working and dynamic parameters of the process and measurement of the load on the Executive body were determined at the experimental stand simulating the vibration effect on the array: the total power spent on the rock separation is in parabolic dependence on the feed rate of the excavation machine, and the effect of applying vibration effects on the destroyed face begins to affect significantly at a feed rate of more than 10 m / min; specific energy consumption for the separation of the whole are in quadratic dependence on the value of the ratio of the width of the whole to its height. The parameters of the working body are taken on the basis of the condition of ensuring a given performance at optimal grade and minimum energy consumption of destruction; vibration cutting of the working body of the dredging machine is effective if the oscillation amplitude of the working tool is greater than the maximum chip thickness separated by the cutting tool. The adequacy of the proposed mathematical model of the working body of the excavation machine is confirmed by bench studies of the efficiency of vibration cutting of minerals. Parameters of vibration exciters of radially directed vibrations of the working body are recommended for use in the development of design documentation of the excavation machine for use in the extraction of mineral raw materials and mining in the mining industry and related sectors of the economy.

Number of views: 304

PROFITABILITY INCREASE FOR OIL PRODUCTION BY DIVERSIFICATION OF TECHNOLOGIES

B. S. Tsidaev, A. V. Logachev, V. I. Golik

During the reformation period, technical solutions are relevant, allowing to increase the level of production profitability in the current difficult economic conditions. In due time, North Ossetia met the needs of Russia and the USSR in lead completely and in zinc by 2/3. Not having the opportunity to revive the former rates of the mineral production, North Ossetia is developing a new direction for its hydrocarbon production. The proposed solutions are based on the works of professor Ostroushko IA, who proved the presence of metals in the host mineral resources as a mineral base for the development of innovative technologies. The aim of the study is to substantiate the possibility of restoring the economic potential of the region through the diversification of technologies for the development of hydrocarbon deposits and a tool to achieve the goal is the extraction of metals from the rocks containing oil and gas. Metals, more than fifty kinds of metals, are dissolved in oil. The presence of metals in the host rocks was confirmed by the method of furrow testing of the workings. The possibility of leaching metals from intact metal-bearing rocks is confirmed by the practice, for example, of the Kakadur-Khanikomskoye field (RSO-A). This phenomenon can be used for leaching oil and gas containing natural and man-made geological and man-made structures after the extraction of hydrocarbons from them. Using only the traditional oil production technology does not ensure the competitiveness of field exploitation and needs technological diversification, which consists of the production of a new commercial product - metals extracted from the walls of the voids formed by the extraction of hydrocarbons by leaching. The resulting value-added product increases the profitability and competitiveness of the main production. The mineral base of diversified production increases almost unlimited. The advantages of the method are its cost-effectiveness and the possibility of developing reserves that are inaccessible for traditional technology. The diversification option involves the extraction of oil and reagent leaching of metals in two stages. As oil is extracted, voids are formed, the collapse of the walls of which increases the permeability of the reagents into the micro cracks of the excavation walls rocks during leaching. The economic concept of diversifying the development of oil and gas fields is to combine the processes of obtaining the main and additional commercial products.

Number of views: 378

TECHNOLOGICAL SOLUTIONS FOR INTENSIVE WORKING OF MEDIUM THICK INCLINED COAL SEAMS IN DIFFICULT CONDITIONS IN THE MINES OF THE QUANG NINH COAL BASIN

Thang P.D., Thang H.H., Phuc L.Q.

Analyzed the promising direction of implementation of the state plan for the extraction of coal in Vietnam largely depends on the efficiency of further industrial development of the potential of the Quang Ninh coal basin. An analysis of the limitations of the application of technologies, depending on the complexity of the mining geological and mining technological conditions of the Quang Ninh coal basin, is given. Analyzed the possibility and feasibility of using the room and pillar method based on the analysis of foreign experience in mining coal seams. An innovative technological scheme of highly efficient mining of medium thick inclined coal seams with a diagonal disposition of the line of face with the use of self-moving supports along articulated joints was proposed. A block diagram of the choice of mining method is based on the angle of dip classification of coal seams.

Number of views: 342

GEOLOGICAL-ECONOMIC ESTIMATION OF KAZAKHSTAN DEPOSITS

G. I. Rudko, A. V. Myatchenko, F.M. Isataeva, V. S. Portnov

The thesis is put forward that the progress of Kazakhstan is connected, first of all, with the availability of natural resources; long-term practice, covering the complexity of management; development of protective mechanisms to defend national interests. Kazakhstan's experience in industrial and innovative development can be useful for developing countries, as it clearly shows how the transformation processes take into account the specifics of the country, its geopolitical position, traditions and mentality. Further development of the geological industry of Kazakhstan, the key criterion for the efficiency of which is the increase in proven mineral reserves, due to the intensification of production and increasing the depth of processing. Along with the improvement of geological and geophysical research, the economic side of geological exploration plays an important role. In light of the above, the article aims to substantiate the directions of improving the geological and economic assessment of the pyrite-copper-lead-zinc Deposit of Kusmuryn. Objectives: to show the effective steps of state regulation of the geological industry of Kazakhstan; to summarize the results of geological and economic assessment of the copperlead-zinc Deposit Kusmuryn; to justify the need to improve the geological and economic assessment of deposits in accordance with international standards and taking into account socio-economic, geological and geographical factors. Information and factual base of research-materials of the legislative and regulatory framework of the Republic of Kazakhstan, the results of scientific research of the field Kusmuryn, own calculations of the authors. The validity and reliability of the results are determined by comparative analysis, the use of reliable economic and geological information about the raw material base of Kazakhstan, the Kusmuryn Deposit, the use of a set of modern methods of scientific research, taking into account regional climatic and geological conditions. The results of geological and economic assessment of the Kusmuryn field can be attributed to the category of promising, in the medium term it is planned to enter the field of underground mining. In order to improve the geological and economic assessment of deposits proposed to deepen the feasibility study of permanent conditions, developed on the basis of materials already completed exploration, financial analysis. For the growth of scientific evidence of geological and economic assessment of mineral deposits and optimization of decisions on their further operation, specific indicators are proposed. In conclusion, the article shows how the planned effective measures of state regulation of the geological industry will affect the quality of exploration, their innovative component, and in general, the sustainability of regional development.

Number of views: 507

REGIONAL PATTERNS OF CHEMICAL ELEMENTS MIGRATION IN THE LANDSCAPES OF THE NORTH CAUCASUS

T. V. Degtyareva, A. А. Lichowid, A. V. Lysenko, Yu. Karaev

The purpose of the study is to identify the peculiarities of chemical elements migration in the system "soil – soil-forming rocks" in the regional geo – systems of the North Caucasus with the one type biological cycle and heterogeneous soilforming rocks. As the regional geo – systems are high-altitude geo – botanical zones of high-mountain, mid-mountain and low-mountain physical and geographical sub domains landscape of the northern slopes of the greater Caucasus. Research methods: The object of study is the regional structure of chemical elements migration which are considered on the example of two high-altitude zones of Labino-Teberda landscape district allocated in the Western Caucasus within the Elbrus-Kazbek Alpine sub domain. To determine the intensity of chemical elements migration in the high-altitude zones, the coefficient of radial differentiation R, reflecting the genetic relationship of the soil with the soil-forming rock was used. The allocation of par genetic associations of chemical elements with the same regional structures of migration between the soil and heterogeneous soil-forming rocks within the boundaries of the high-altitude zones of the LabinoTeberdinsky district was performed by the cluster analysis. On the basis of the available data on high-altitude zones of all landscape districts of the mountainous, mid-mountainous and low-mountainous sub domains of the northern slopes of the greater Caucasus, a comparison of the regional structures of chemical elements migration was carried out. Research results: In geo – systems of the regional level with the same type of biological cycle and non-uniform soilforming rocks the regional structure of chemical elements migration are formed. They represent a certain sequence in changing the element migration intensity between the soil and heterogeneous rocks within the boundaries of the highaltitude zone. Different intensity of radial migration depends on the number of mobile and strongly bound compounds of the chemical elements. Their formation occurs in the rocks and soils during the long course of complex processes of rocks weathering and soil formation with a complex combination of factors of internal and external chemical elements migration. Conclusions. In geo – systems with the same type of biological cycle and heterogeneous soil-forming rocks within the physical and geographical sub domains of the northern slopes of the greater Caucasus, the peculiarities of regional structures formation of chemical elements migration have been developed. In the mountainous and mid-mountainous sub-regions, moving from the Western to the Eastern Caucasus during the formation of regional structures of chemical elements migration, the role of the biogenic factor is weakening and the influence of the lithogenic factor is increasing. All over the low mountains and foothill plains sub-regions (in the Western, Central and Eastern Caucasus), the biogenic factor is of primary importance for the majority of chemical elements in the formation of the regional migration structures.

Number of views: 454

MAINTAINING SOIL FERTILITY: A METHOD FOR ORGANIC FERTILIZER PRODUCTION FROM CROP FARMING WASTE

V. V. Kireeva, T. G. Rasskazova, N. M. Serbulova

The purpose of this work was to evaluate the opportunities for production of a liquid organic fertilizer from the waste left after processing of alfalfa herbage, and its influence upon preservation of fertility in the black soils of the Ciscaucasian region. Methods. To produce the fertilizer, we used the phytomass of Medicago sativa ('Manychskaya' variety) grown as forage grass and mown during the budding stage and blooming stage beginning. Herbage was wet-fractionated (including disintegration and fractioning of alfalfa vegetative mass) and dehydrated by means of mechanical compression producing press cake and green juice used further for green protein concentrates. Brown juice also generated in the process was a by-product, which used to be considered a waste. In our studies, brown juice was employed as a raw material for production of a fertilizer for the fields where alfalfa herbage had been harvested. During the study of brown juice applicability, we assumed the volume corresponding to the brown juice amount gathered from a unit of area within a season to be the reference fertilizer application volume. Results. It was established that brown juice from alfalfa herbage contains material quantities of nitrogen, ash constituents, phosphorus, calcium, potassium, and other compounds necessary for their replenishment in soil and adequate nutrition of the plants cultivated there. During chemical analysis of soil composition, priority was focused on active forms of humus, phosphorus, potassium, and nitrogen as the components most readily available for plant nutrition and thus also acting as productivity indicators. Performed analysis demonstrated that the levels of chemical elements increased following fertilizer distribution due to the return of substances extracted with the gathered herbage reaching practically the same level as in the initial soil samples collected in the vegetation period beginning (typical productivity levels of black soils in the Ciscaucasian region). Fertilizer application while alfalfa was still growing resulted in herbage yield increase observed throughout 3 hay cuttings in comparison with the control plot. The method designed for complex utilization of vegetable resources allows to produce besides animal feeding stuff a liquid organic fertilizer minimizing soil depletion and maintaining its productive capacity.

Number of views: 438

DUST AND GAS EMISSIONS FROM THE DUMPS SURFACES OF THE LIQUIDATED MINES OF THE MOSCOW COAL BASIN

M. V. Gryazev, N. M. Kachurin, G. V. Stas

Purpose. The work deals with the problem of minimizing the negative impact of the tailings of coal mining and processing on the ecosystems of the environment by optimizing the parameters of the construction and operation of the dumps. Methods. The object is achieved by a method of mathematical modeling aero – gas – dynamics processes based on the system of Reynolds equations in the flow of air masses of waste rock dumps. Results. The simulation parameters of aero – gas – dynamics processes in the flow of waste dumps of atmospheric flows were obtained using O. Reynolds equations describing the flow of the viscous, compressible heat-conductive gas in threedimensional formulation which consists of the basic conservation equations. On the basis of the simulation results the generalized geo – ecological model of technological periods of coal mining by underground method is formulated which is a matrix of the physical models of dust and gas pollutants emission processes in the environmental ecosystems and their mathematically formalized description. It is shown that the intensity of dusting rock dumps depends on a number of factors, the main of which are the dispersed composition, dust humidity, as well as the direction and speed of the wind. The analysis of the results of the computational experiment determined that during the transfer of the gas pollutant its concentration under wind action in the simulated space changes slightly. It was found that the intensity of dust deposition in the area of mines is determined by the value of the dust soaring rate and the value of the sedimentation coefficient. Summary. The territory of the studied mines is polluted mainly with lead. Calculation aero – gas – dynamics processes parameters of waste dumps flow on the basis of Reynolds equations in three-dimensional formulation gives correct results.

Number of views: 467

DEVELOPMENT OF SEISMIC RESISTANCE CONSTRUCTIONS IN THE MOUNTAIN TERRITORIES OF NORTH OSSETIA ON THE BASIS OF A NEW REGIONAL CURVE OF DYNAMICITY COEFFICIENT

Zaalishvili V. B., Rekvava P. A., Melkov D. A.

The Northern Caucasus that is characterized by moderate seismic activity refers to areas with high seismic hazard potential. In the process of investigation the Kolka glacier in 2002, it was found that the maximum earthquake effect for example in the mountainous regions of North Ossetia was reaching 10–11 points. Analysis of instrumental data shows that even within the same region, the intensity, duration, and predominant period of oscillations may vary. Moreover, it was later found out that the fault in the southern part of the city of Vladikavkaz, the capital of the Republic of North Ossetia-Alania, can be a source of a strong earthquake with a maximum expected magnitude of M = 7.1, which can form 9-10 points intensity values directly in densely populated city. This circumstance should be taken into account in seismic design and practical construction. Seismic safety is the basis for the sustainable development of mountain areas. In conditions of moderate seismic activity, when there are practically no records of strong motions in the area of interest, different models of generating synthetic accelerograms are used. One of the methods is a stochastic one based on probabilistic models taking into account regional features of earthquake sources. To simulate the effects, a quasi-stationary or amplitude-nonstationary model is used. Components of the seismic action are represented as a product of a stationary random function and a deterministic envelope. Synthetic accelerograms were obtained for the most dangerous for the territory of the city of Vladikavkaz city seismic zones. Curves of the dynamicity coefficient and the corresponding envelope were constructed, taking into account the particular locations of the sources of possible earthquakes on the investigated territory, accounting for which will increase the safety of the population. In the interval of periods T = 0.1–0.4 s expected seismic effect is 1.6 times higher than the standard curve of the dynamic coefficient. for average values, the excess is 1.3, in the interval of periods T = 0.4–2.0, the calculated maximum values are within the calculated curve. For the first time, a regional dynamic curve was obtained which can be successfully used in earthquake-proof design and practical construction.

Number of views: 420

SUSTAINABLE DEVELOPMENT OF MINING SYSTEM AT THE FINAL STAGE OF UNDERGROUND MINING VEIN GOLD DEPOSITS OF THE URALS

M. V. Rylnikova, K. I. Strukov, E. N. Esina

At the present stage of development of mining systems as a result of long-term exploitation of gold ore deposits in the Urals, there is a reduction in the volume of reproduction of the resource base, a decrease in the qualitative characteristics of mined ores, the complication of geomechanical conditions, expressed in the increase in the intensity of manifestations of mountain pressure in a dynamic form, the rise in the cost of production, the complication of the environmental situation and social problems in the developed mining region. At the same time on the final stage of development of balance reserves have significant undeveloped, which can be effectively engaged in the use of natural and man-made reserves of different kind of security, barrier, carrier, and safety pillars, backfill areas, areas of collapse, the stocks at greater depths, in remote areas of the field. In addition, it was previously off-grade ore accumulated technogenic raw materials, completed the excavation and formed the mined-out area, man-made landscape. It is proved that the concept of field development at the final stages of operation should include the restructuring of reserves and compensation for the impact of negative factors in the refinement of the field through the introduction of resource-saving and energy-efficient geotechnologies. It is shown that the full disclosure of the potential of the resource base and ensuring the sustainable safe and harmonious development of the mining enterprise at the final stage of field operation are inextricably linked with the rational use of non-renewable natural and man-made sources of energy and the transition to the use of renewable sources.

Number of views: 406

PARABOCHEVSCIY RESER FLORA AND ITS SYSTEMATIC ANALYSIS

Umarov M. U., Gapaev Y. C., Taisumov M. A.

Parabochevsky State Biological Reserve was founded in 1963 in the valley of the r. Terek (Chechen Republic) on an area of 12.0 thousand hectares. But information about its nature including flora is very limited. The purpose of the work. The study of the composition and systematic analysis of the flora, the identification of rare, relict and resource-useful species. Research methodology. Floristic studies were carried out in 2012–2015 in different seasons of the year along routes covering different sites and habitants of the reserve. To clarify the types 3-volume determinant A.I. Galushko "Flora of the North Caucasus" (1978–1980) was used. The attention is paid to the systematic composition of the flora, the presence of relics, rare and economically useful species. Results. The reserve has revealed 266 species of vascular plants from 205 genera and 71 families. The largest families – Asteraceae, Rosaceae, Lamiaceae, Fabaceae, Poaceae, Boraginaceae, Brassicaceae, Caryophyllaceae, Apiaceae, Malvaceae – accounted for 111 (54.1%) genera and 145 (64.4%) species. The largest are genus, including by (Artemisia, Centaurea), 4 species (Potentilla), 3 species each (Allium, Crataegus, Inula, Populus, Trifolium, Salix, and Viola). 2 species contain 40 genera. A total of 50 (24.4%) genera numbered 115 (43.2%) species. In the remaining 155 genera – one type. The Red Book Books (Allium paradoxum, Althaea officinalis, Amygdalus nana, Cephalanthera damasonium, Cucubalus baccifer, Cydonia oblonga, Eryanthus ravens, sites, sites, sites, sites, sites, sites, sites, sites, sites . woronowii, Salvinia natans, Tulipa biebersteiniana, Vitis sylvestris), other rare species (Allium ursinum, Chelidinium majus, Сlematis orientalis, Listera ovata, Physalis alkekengi, Oenothera biennis, Orobanche, you will also be looking for what you are looking for, if you are looking for what you and also your company is looking for, if you are looking for what you and also your company is looking for, this is what you and your company will be looking for. and tertiary relics (Euonymus europaea, Carpinus caucasica, Cornus mas, Corylus avellana, Lonicera caprifolium, Populus hybrida, Pyrus saucasica, Quercus robur, Rubus caesius, Sambucus nigra, Tilia cordata, Ulmus suberosa, herbal – Alliaria officinalis, Allium paradoxum, Arum maculatum, Convallaria transcauca sica, Humulus lupulus, Tamus communis, etc.). Conclusions. The flora of the reserve which is rich in systematic composition (266 species from 205 genera and 71 families) contains many relict, rare and economically useful species, most of which should be protected and reproduced.

Number of views: 444
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ISSN 1998-4502 (Print)                                                            ISSN 2499-975Х (Online)