Sustainable Development of Mountain Territories最新文献

{"title":"Complex estimation of geotechnical risks in mine and underground construction","authors":"E. Kulikova, S. Balovtsev, O. Skopintseva","doi":"10.21177/1998-4502-2023-15-1-7-16","DOIUrl":"https://doi.org/10.21177/1998-4502-2023-15-1-7-16","url":null,"abstract":"Introduction. Projects for the construction of underground structures and mines often involve significant geotechnical risks. The uncertainty associated with geotechnical conditions implies the development of a specific approach to making design and constructive decisions. Even after a thorough geotechnical study, the ability to accurately predict the behavior of adjacent rock massif is often difficult due to the large number of engineering-geological and hydro-geological variables. Most of the identified risks can be eliminated at the design stage. Residual risks should be subjected to a comprehensive assessment, including qualitative and quantitative analysis and calculations of damage from potential risk and technical and economic efficiency of the adopted design decision. Objective. Complex estimation of geotechnical risks in mine and underground construction based on the analysis of indicators of the implementation of accidents by mining-geological and mining-technical factors, taking into account the use of special methods of construction. Methodology. A сomplex estimation of geotechnical risks was carried out on the basis of the theory of emergency risk using methods of mathematical statistics, probability theory; the method of expert assessments to obtain the values of vulnerability coefficients of the applied technologies of mine and underground construction. The developed methodology includes several stages. At the first stage of a сomplex risk estimation, it is necessary to rank the geotechnical risk factors selected for analysis, for which a concordance coefficient is introduced. When analyzing each of the emerging geotechnical figures during the construction of a specific underground or mine construction facility, one of the defining indicators is the numerical expression of the potential damage from the occurrence of an emergency situation, which represents the percentage ratio of the excess of the construction period in real practice to the same indicator laid down in the project, or the ratio of the increase in the cost of construction to the estimated cost. Next, the numerical value of each type of risk is determined and a scale of numerical values of risks is compiled, on the basis of which decisions are made on the management of each specific risk. At the end, the vulnerability of a mine or underground construction facility under construction is determined, i.e. the degree of its possible damage and destruction when exposed to abnormal situations of a natural and man-made nature. Results and discussion. A methodology has been developed for the сomplex estimation of geotechnical risk in mine and underground construction based on the ranking of risks according to the degree of vulnerability of the technologies used. Ranking of construction objects by their vulnerability to various impacts allows us to assess the correlation between the values of the parameters and the qualitative characteristics of the elements of the “mining – r","PeriodicalId":37608,"journal":{"name":"Sustainable Development of Mountain Territories","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46324124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mathematical modeling of the weak low-frequency impact of seismic waves on the glacial massif","authors":"I. Muzaev, K. Kharebov, N. Muzaev","doi":"10.21177/1998-4502-2023-15-1-51-58","DOIUrl":"https://doi.org/10.21177/1998-4502-2023-15-1-51-58","url":null,"abstract":"Introduction. The Kolka glacial massif repeatedly broke off from the freezing surface and thereby formed powerful glacial mudflows that caused great material damage to the Republic of the Republic of Alania with numerous human casualties. In the work of Muzaev I. D. and Sozanov V. G., the first step was taken in mathematical modeling of seismic vibrations of the glacial massif and the statement was proved that weak earthquakes of 3-3.5 MSK points can provoke bending and shear stresses several times higher than the destructive stresses of ice on the underlying surface of the glacial massif. The considered mathematical model proposed in the article has been amended, significantly clarifying the scientific results. The purpose of the work is to formulate and solve an initial boundary value problem that resembles the problems of mathematical physics and simulates the fluctuations of a glacial massif. The oscillation of the array is caused by the freezing of a weak traveling harmonic seismic wave with an intensity of 3-3.5 MSK points falling on it and on its underlying surface. Materials and methods. Due to the fact that the longitudinal dimensions of glacial massifs are an order of magnitude larger than their transverse dimensions, the article assumes that the mechanics of such massifs are most adequately modeled if their geometric configurations are considered as girder bodies with their physical and mechanical characteristics. The losses of mechanical energy due to internal resistance in the array material are taken into account in accordance with the hypothesis of S. A. Sorokin. The elastic rebound force from a seismically oscillating base is taken into account in accordance with Winkler’s hypothesis. Due to the fact that the coefficient of the differential equation of vibrations of the beam array is complex, the equation splits into a system of two fourth-order differential equations with real coefficients, where the desired functions are the real and imaginary parts of the originally sought complex function. The initial boundary value problem is solved analytically. Results. On the example of the Kolka glacier (North Caucasus Highlands), which collapsed in 2002 and claimed 126 human lives, computer experiments were performed to calculate induced stresses. Discussion. Comparative computational experiments have proved the claims that the seismic stresses caused by the Winkler elastic rebuff of the seismically oscillating surface of the base: a) are significantly greater than the stresses from the bending component of the vibrations of the array; b) can significantly exceed all the values of the destructive stresses of the ice. Conclusion. It is proved that the superiority of the Winkler stress over the destructive stress of ice can also occur in weak earthquakes with an intensity of 3-3.5 MSK points. Such superiority can play the role of a trigger for the breakaway of the glacial massif from the freezing surface and thereby the formation of a powe","PeriodicalId":37608,"journal":{"name":"Sustainable Development of Mountain Territories","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46560046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of accumulation of volatile organic compounds in plants of Hyssopus officinalis L., introduced in mountain conditions","authors":"G. Radzhabov, Abdulahid Musaev, F. Islamova, Aslan Aliev","doi":"10.21177/1998-4502-2023-15-1-174-181","DOIUrl":"https://doi.org/10.21177/1998-4502-2023-15-1-174-181","url":null,"abstract":"Introduction. Cultivation of medicinal plants in the mountains has its own characteristics due to the high ultraviolet radiation and sharp climatic fluctuations, which is important to consider when farming. In this regard, the issue of studying the accumulation of volatile organic compounds of Hyssopus officinalis L. introduced in these conditions becomes relevant. Aim. Analysis of the dependence of the content of volatile organic compounds in essential oils of 6 cultivars of Hyssopus officinalis L. (\"Akkord\", \"Ametist\", \"Goluboy\", \"Dachnyi lekar\", \"Otradny\", \"Rozovy\") and three forms of the variety \"Rozovy\": with white, pink and blue flowers introduced at an altitude of 1100 meters above sea level in order to determine the most valuable of them for effective cultivation in mountain areas. Research methods. The essential oils were obtained by steam distillation. The composition of volatile organic compounds was determined by chromatic-mass spectrometry on a Shimadzu GCMS-GP2010 Plus spectrometer with a mass spectrometric quadruple detector with an SLB-5 ms non polar capillary column, 30 meters long. Results. The content of essential oil in varieties ranges from 0.37 to 0.75%. Variety \"Ametist\" is characterized by a relatively high content of essential oil. Plants with pink flowers contain more essential oil than plants with blue and white flowers. The essential oil of the varieties contains from 31 to 37 components, while the number of major components varies between 13 and 17 compounds. A comparative study of plants of different colors according to the nature of biosynthesis in the essential oil of Pinocamphone and trans-Pinocamphone shows the following: in the essential oil of plants with white flowers, the content of Pinocamphone is observed up to 44.99%, in the blue-flowered form up to 20.85%, and in plants with pink flowers up to 45.23%. A somewhat different picture is observed in the biosynthesis of trans-Pinocamphone: the maximum proportion of this component falls on the sample with blue flowers (34.61%), significantly less in the sample with pink flowers (up to 4.43%), while white-flowered plants have none. The article presents a cluster analysis of 6 cultivars and 3 forms of the \"Rozovy\" variety (with white, blue and pink flowers) of Hyssopus officinalis L. according to the accumulation of volatile organic compounds. Varieties differ in the content of individual components, while β-Pinene, Pinocamphone and trans-Pinocamphone are the main plant compounds. Conclusions. As a result of the introduction of 6 cultivars of Hyssopus officinalis L. (\"Akkord\", \"Ametist\", \"Goluboy\", \"Dachnyi lekar\", \"Otradny\", \"Rozovy\") and 3 forms of the variety \"Rozovy\": with white, with pink and with blue flowers at an altitude of 1100 meters above sea level in identical soil-climatic mountain conditions, differences were revealed both in the accumulation of essential oils and in the biosynthesis of secondary metabolites. The data obtained can be used in laying ","PeriodicalId":37608,"journal":{"name":"Sustainable Development of Mountain Territories","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49320218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-mountain territories of Bolshaya Belokurikha: tourism design based on the recreation opportunity spectrum","authors":"E. Tabakaeva, A. Dunets, O. Akimov","doi":"10.21177/1998-4502-2023-15-1-182-196","DOIUrl":"https://doi.org/10.21177/1998-4502-2023-15-1-182-196","url":null,"abstract":"Introduction. Bolshaya Belokurikha is a dynamically developing tourist destination in the low mountains of the Altai Territory with a sufficient number of underdeveloped territories near the resort town of Belokurikha. The article shows the application of a territory management system based on the recreation opportunity spectrum for the design of the developing territories of Bolshaya Belokurikha. The purpose of the study is to classify the tourist areas of Bolshaya Belokurikha in accordance with the recreation opportunity spectrum and develop recommendations for their design. Materials and methods. The study included the following stages: 1) analysis of the existing use of territories, 2) defining of opportunity setting factors (controlled factors), 3) description of the potential recreation opportunity spectrum with specific values of factors for each class of territory, 4) typification of the territories of Bolshaya Belokurikha in accordance with the characterized spectrum classes, 5) comparison of the planned classes with the current state of the territories and the formulation of design recommendations. The following methods were used to collect data: observation, analysis of secondary data, non-standardized survey of experts from the scientific and business communities in the field of tourism in the form of interviews with open-end questions. At the data processing stage, general scientific methods of analysis, synthesis, and classification were used. As opportunity setting factors (controlled factors), we chose the frequency of encounters with other visitors, the density of buildings and infrastructure, the type of accommodation facilities, the number of service facilities, the type of access to the territory (development of the transport and route network and its quality). Results. The potential recreation opportunity spectrum of Bolshaya Belokurikha includes 8 classes of territories that can satisfy the different needs of visitors: urban territory (obtaining the widest possible range of services in the most comfortable conditions), rural areas (rest from the bustle of the city in comfortable conditions, eco-food, immersion in rural life), motorized sightseeing (quick access to nature in relatively comfortable conditions), a pedestrian zone (short walks along specially equipped health trails near the urban area), semi-primitive motorized territory (active secluded outdoor recreation in comfortable conditions with the possibility of moving on ATVs, bicycles, etc.), hiking zone (solitary short-term (1-3 days) recreation in comfortable conditions, light hiking with overnight stays at camp sites, in glampings, etc.), backcountry (trekking) zone (solitary recreation in training conditions, long hiking with overnight stays in tents in designated places), primitive territory (full immersion in nature with a high level of risk and difficulty). Discussion. Taking into account current trends in demand, the most attention in terms of design in Bolsh","PeriodicalId":37608,"journal":{"name":"Sustainable Development of Mountain Territories","volume":" 45","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41253347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of a method and apparatus for measuring the forces in particle contacts under conditions of flotation of gold microdispersions","authors":"S. Evdokimov, A. Makoeva, R. Maksimov, Daria Dyatlova","doi":"10.21177/1998-4502-2023-15-1-81-96","DOIUrl":"https://doi.org/10.21177/1998-4502-2023-15-1-81-96","url":null,"abstract":"Introduction. In flotation of gold-containing ores, metal losses with tailings are mainly related to the fine particle size classes - micro dispersions. Study of the physical nature of the forces in the contacts between the particles, including gold micro dispersions, allows gaining new knowledge associated with the solution of the pressing problem of effective extraction of difficult to extract forms of the precious metal by flotation. Materials and methods. Measurement of the forces in contacts of particles was carried out by sediment volumetric method using the developed device. The method allows to determine the forces in contacts of particles by the volume of their sediment, formed as a result of kinetic destruction of the disperse system. Alluvial gold from the collection formed during the experimental tests of the equipment of separation complexes \"Shlich\", \"Shlich-2\", \"PGShOK-50-2\" was used in the experiments. The results of measuring the forces were supplemented by theoretical studies, which had the aim to estimate the contribution of the fluid volume held by capillary forces in contacts of particles to the volume of sediment. Results. It was found that the volume formed by the kinetic destruction of the disperse system is determined by the force in the contacts of particles, and the volume of capillary held liquid is of subordinate importance. Discussion. It is shown that the results obtained can be explained by involving the notions of boundary layers of fluids with a structure changed under the influence of surface forces. The low-entropic structure of liquid in the boundary layer of hydrophobic surface is caused by forces arising inside liquid itself near weakly interacting surface, and is energetically the least favorable, corresponding to the maximum of free energy. Therefore, the particles behave as if there are hydrophobic attraction forces among them. Conclusion. Uncompensated charges near hydrophilic surface create high-entropic structure of water with normal orientation of its dipoles and increased density, which causes the appearance of structural hydrophilic repulsive forces among particles. Resume. Structural hydrophobic attraction and hydrophilic repulsion are endothermic processes. Their violation will be an exothermic process and its exo-thermicity increases as the temperature rises. The developed method of flotation is based on this property of structural forces: the stability of wetting films in flotation processes of micro-dispersions of minerals is changed by heating water in the boundary layers of air bubbles - hydrophobic cavities in water - due to the condensation heat of hot water vapor. For this purpose, aeration of the flotation system is carried out by a mixture of air and steam. Proposals for practical application and direction of future research. Practical significance of the project is to develop technology for flotation of the most difficult to extract forms of gold. Its essence is based on the effect of p","PeriodicalId":37608,"journal":{"name":"Sustainable Development of Mountain Territories","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46458429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Peculiarities of poly disperse particle interaction in gold micro dispersions flotation processes","authors":"Tatyana Gerasimenko, Iya Rubayeva, R. Maksimov, V. Vasiliev","doi":"10.21177/1998-4502-2023-15-1-97-113","DOIUrl":"https://doi.org/10.21177/1998-4502-2023-15-1-97-113","url":null,"abstract":"Introduction. In flotation of large particles, the approach of a particle to a bubble is provided by inertial forces, while in the case of small particles this process proceeds inertially. Inertia less hydrodynamic interaction with the bubble - movement with the liquid flow without contact with the surface of the bubble up to its lower hemisphere - is the main reason for losses of small particles in flotation. Materials and methods. Research was carried out on washing wastes of gold placers of the Petinikan-Bastakh group of deposits and on a sample of ore from the Natalka deposit. Results. It is shown that in a poly disperse system the aggregates are formed mainly from small and large particles with a density greater than the density of the disperse medium. It has been revealed that the mathematical expectation of the number of collisions of particles of the same size is negligibly small. On the other hand, provided that the concentration of small particles in a poly disperse system is not small, the relative frequency of their collision with large particles is close to 1. The obtained result proves the probability of adhesion of small particles to the surface of a large particle. It does not contradict the results obtained by other authors and methods. At flotation extraction of fine particles at the expense of their capture by fast moving coarse particles can make 50 %. Discussion. Theoretical and experimental research of the fine gold extraction technology by flotation with carrier minerals (or solid wall by another terminology), whose distinctive feature is the use of extremely related to the fine ore gold surfaces as carrier minerals - the large metallic gold extracted from the techno-genic placer. It is shown that enhancement of technological performance is achieved through the effective interaction of poly disperse particles with the formation of aggregates extracted by the mechanism of inertial flotation of large particles. Conclusion. The calculation shows that the economic effect is achieved, firstly, by increasing the production of marketable products by reducing metal losses with wastes of processing. Secondly, due to obtaining a higher total cost as a result of reducing the unit cost of gold production in the joint processing of gold-containing raw materials. Resume. The results of the study can be used in the joint ore and placer processing according to the scheme - separation of gold enriched product from the placer with minimal metal losses with the wastes of processing - formation of goldbearing aggregates by adhesion of fine gold ore on thin plates and flakes of placer gold - flotation of fine gold ore on the carrier minerals.","PeriodicalId":37608,"journal":{"name":"Sustainable Development of Mountain Territories","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41757338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling of sustainable agricultural land use on the basis of agroecological assessment of the territory","authors":"B. Akhmetov, Assiya Kassenova, O. Merzlyakov, L. Tatarintsev","doi":"10.21177/1998-4502-2023-15-1-17-26","DOIUrl":"https://doi.org/10.21177/1998-4502-2023-15-1-17-26","url":null,"abstract":"The purpose of the study: to create a model of sustainable agricultural land use on the example of an existing agricultural organization in the Altai Кrai based on a comprehensive agro-ecological analysis of the territory. Research methods: A systematic approach and its variation, agroecological analysis, has become the main method of this scientific research. Spatial studies were carried out using the cartographic method. The obtained sets of analytical data were processed using GIS technologies. We also used the method of scientific abstraction, methods of analysis and synthesis, induction and deduction. Research results. The area of the study area is more than 13.4 thousand hectares, among which arable land, hayfields and pastures predominate, which are everywhere to some extent subject to degradation processes. In general, the study area is typical for the subzone of the southern forest-steppe of the Altai Krai, so the results and models can be applied to the territories of the Russian Federation and the Republic of Kazakhstan that are similar in natural and economic terms. When analyzing the on-farm use of agricultural land, it was found that environmental stability depends on the degree of plowing, forest cover, the ratio of the main lands (arable land, meadow, forest plantations) and the calculated coefficients of environmental stability and anthropogenic load. It has been determined that the territory occupied by agricultural land and agricultural land is unstable and is subject to an average anthropogenic load. The author’s methodology for assessing the agro-ecological characteristics of agricultural lands used in the work made it possible to identify and typify the studied lands, compile unique digital maps of types of terrain, tracts, lands, and develop models for the transformation of agricultural lands, which made it possible to increase the sustainability of agricultural land use to a state of unstable stability. When modeling the landscape, the main task was to recreate the natural diversity and the mosaic pattern of land placement, which makes it possible to balance the material and energy processes occurring in the landscape. Conclusions: 1. An agroecological assessment of agricultural land of an agricultural organization in the Altai Krai was carried out. 2. Unique map-schemes of types of terrain, tracts, lands, study area were compiled, limiting factors and conditions affecting it were determined. 3. Modeled options for the transformation of agricultural landscapes, which contributed to a change in its sustainability, which is confirmed by the calculated indicators of the coefficients of environmental stability and anthropogenic load of the territory. 4. The results of the study can be applied in: organizing the territory of agricultural land use; designing land use systems; long-term planning and management of land resources, monitoring and cadastral valuation of land.","PeriodicalId":37608,"journal":{"name":"Sustainable Development of Mountain Territories","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49016534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A regional criterion for classifying mining regions as territories with the greatest exposure to geoecological changes","authors":"A. Kulikova, T. Ovchinnikova","doi":"10.21177/1998-4502-2023-15-1-27-34","DOIUrl":"https://doi.org/10.21177/1998-4502-2023-15-1-27-34","url":null,"abstract":"Introduction. Territories adjacent to mining regions always experience a negative impact from the mining enterprise. The scale of such an impact on the environment is estimated by taking into account factors such as geographical location, climatic conditions, the amount of minerals extracted, as well as the ratio of mineral reserves to the area of the mining region. For geo-ecological assessment of the scale of impacts of the territory near the mining region on the environment, it is necessary to introduce a regional coefficient that takes into account the quantitative distribution of mining enterprises on the area of the mining region, as well as the ratio of reserves to area. In this regard, the question arises about the creation of a geo-ecological assessment methodology based on this indicator. Objective. Development of a criterion for a comprehensive geo-ecological assessment of mining regions impact, based on the regional indicator on the example of coal mining enterprises. Methodology. When carrying out the research, the analysis of literary domestic and foreign sources was used; generally accepted methods, including methods of geo-ecological assessment, assessment of natural potential, analysis of anthropogenic load, protection of the territory of the location of the coal mining enterprise. Results and discussion. A functional scheme of the stages of the geoecological assessment of the territory of a coal mining enterprise has been developed to calculate the geoecological assessment indicator with regard to the natural potential of the territory, the total anthropogenic load and the protection of the territory. It is proposed to use a regional indicator to classify the mining region as the territories most susceptible to geoecological environmental changes due to the ratio of the amount of coal production and reserves to the area of the mining region and taking this coefficient into account when allocating state subsidies to improve the environmental situation of the mining region. Conclusions. The main criterion of the geoecological assessment of the mining region– the regional indicator of the attribution of the mining region to the territories with the greatest susceptibility to geoecological changes has been established. The criterion is estimated by the ratio of the volume of production and coal reserves to the area of the mining region. This coefficient is crucial when allocating state subsidies to improve the environmental situation of the mining region. The introduction of a regional indicator creates optimal conditions for forecasting geoecological hazards and the appointment of environmental and nature restoration measures.","PeriodicalId":37608,"journal":{"name":"Sustainable Development of Mountain Territories","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44612436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mathematical model for ore particles movement along the vibrating table of a separator","authors":"V. Lapshin, N. Nemchinova, V. Myazin","doi":"10.21177/1998-4502-2023-15-1-197-206","DOIUrl":"https://doi.org/10.21177/1998-4502-2023-15-1-197-206","url":null,"abstract":"Introduction. One of the vibration methods for processing loose finely dispersed mineral raw materials is the separation method on a vibrating surface. Separation occurs according to size, shape of particles, coefficient of friction, elasticity and other mechanical parameters of particles. The efficiency of the separation process depends on the correct choice of technological characteristics of the working equipment. To solve such problems, mechano-rheological models are widely used. The issues of rational construction of research models, based on the specific conditions of the considered dynamic processes, are important and relevant. Materials and methods of research. Identification of rational parameters and modes of operation of vibration equipment is carried out experimentally or by mathematical modeling of the vibration process of the interaction of particles of mineral raw materials with the vibrating body of the separator. Mathematical models are developed for the separated components of the original ore material, which allow studying the dynamics of the movement of particles of the material along the vibrating body of the separator, and as a result of the research, the most rational operating modes of the equipment are determined. Research results and discussion. The presented mechano-rheological system as a model of a material particle is designed to study the processes of interaction with the working body of the separator, a mathematical description of the model is given. The model makes it possible to study the influence of the mechanical properties of the material (elastic, dissipative, plastic) on the dynamics of the process of movement of a material particle along the working body of the separator. For different stages of particle motion, models of different levels of complexity are recommended, which greatly facilitates the solution of problems for the development of algorithms and software for the vibration process under study. This increases the efficiency of the practical application of mathematical models in determining the rational operating modes of the equipment and evaluating the effectiveness of the vibration separation process. Conclusion. To study the process of vibrational separation at various stages of the movement of particles of ore material, it is recommended to use mathematical models of different levels of complexity. A mathematical description of research models for various stages of the vibrational process is presented, the conditions for the transition between the stages of particle motion are given. Resume. Thus, the presented mathematical model makes it possible to study the dynamics of the movement of ore material along the working body of the separator, taking into account the main mechanical properties of the material. The use of the developed recommendations increases the efficiency of the practical application of mechanorheological models for research purposes.","PeriodicalId":37608,"journal":{"name":"Sustainable Development of Mountain Territories","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45970294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bioclimatic variants of the Northeastern Transbaikalia Orobiome","authors":"M. Bocharnikov","doi":"10.21177/1998-4502-2023-15-1-143-159","DOIUrl":"https://doi.org/10.21177/1998-4502-2023-15-1-143-159","url":null,"abstract":"Introduction. The spatial structure of the biota at the regional level of its organization is most closely associated with the climate, expressed primarily through bioclimatic indicators. In the geography of the botanical diversity of Northeastern Transbaikalia, which is characterized by a complex organization of vegetation cover, the influence of a number of important gradients of climatic conditions is expressed. The identification of these gradients was the purpose of this research. Methods and materials of the research. The methodological basis of the research was the ecosystem approach to the identification and evaluation of phytocenotic diversity associated with ecological and geographical factors that determine its spatial differentiation. The geographic and genetic classification of plant communities was used to identify the typological diversity of vegetation. The climatic characteristics of the Northeastern Transbaikalia was given on the basis of key bioclimatic indicators (global model BioClim). The bioclimatic substantiation of the spatial structure was carried out taking into account the principles of identifying the diversity of ecosystems at the regional level. Mapping of the bioclimatic variants of the orobiome was compiled using the clustering of units according to the average values of parameters by the k-means method. Research results and discussion. A joint analysis of vegetation and climate made it possible, for the first time for Northeastern Transbaikalia, to determine the internal structure of ecosystem diversity that develops in the mountains within the framework of an orobiome. It also allowed mapping the spatial organization of ecosystems at the regional level on a climate basis. Using the cluster analysis of climatopes of the main vegetation formations, subdivisions of the orobiome (bioclimatic variants) are proposed. Two variants of the Ist order are expressed through the structure of the vegetation cover of mountain systems: the relatively low Patom highland in the north, and more massive ridges of the strongly dissected North Baikal and Stanovoy highlands in the south. Variants of the IInd order, differing in the degree of continentality and moisture conditions, have specificity in the altitudinal belts and sub-belts of vegetation. Diversity within belts and sub-belts, expressed through the typological diversity of vegetation at the level of formations, classes, and groups of associations, is marked by climatic differences in bioclimatic variants of the IIIrd order. The diversity of climatic conditions that determine the phytocoenotic diversity of Northeastern Transbaikalia is characterized through integral bioclimatic types of orobiome, determined by temperature and moisture supply. Three ombroclimatic types were distinguished by continentality conditions. The influence of the complex orographic structure of a vast mountainous territory, as well as zonal and sectoral patterns in changing climatic conditions, is cha","PeriodicalId":37608,"journal":{"name":"Sustainable Development of Mountain Territories","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45303923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}