Acta Montanistica Slovaca最新文献_第3页

Monitoring and modelling the deformation state of a dyke of a flotation tailings reservoir of a copper ore mine 铜矿浮选尾矿库堤坝变形状态监测与建模

IF 1.6 4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-06-12 DOI: 10.46544/ams.v28i1.11

{"title":"Monitoring and modelling the deformation state of a dyke of a flotation tailings reservoir of a copper ore mine","authors":"","doi":"10.46544/ams.v28i1.11","DOIUrl":"https://doi.org/10.46544/ams.v28i1.11","url":null,"abstract":"The mining areas of the copper ore mines in Poland contain tailings storage facilities. Because of operational safety issues and to minimize the exposure of local neighbourhoods to the risk of such reservoirs failing, mining operations are limited during the period of waste storage, thereby reducing the impact of exploitation on these objects. Nevertheless, continuous monitoring and analysis of the deformation state of reservoirs and associated facilities are required. Monitoring is most often carried out using geodetic methods, while the deformation analysis is based on determining the displacements of control points and making short- and long-term forecasts of changes in land surface deformation.\u0000Presented here is an analysis of changes in the state of displacements and dyke deformations of a currently closed copper flotation tailings reservoir that was used in the 1970s. After the storage of waste was stopped, an intensive two-stage mining operation was carried out under the reservoir. The results obtained from the geodetic monitoring of displacements and deformations of the reservoir dyke are compared with the model values, and the usefulness of the applied theoretical model for describing the vertical and horizontal displacements and horizontal deformations is verified. Based on the comparison results, a hypothesis is presented regarding the causes of the actual condition of the movements of the reservoir dam crest against the background of the expected movements obtained from theoretical modelling. The presented conclusions revise a very rigorous approach to protecting flotation tailings reservoirs against the effects of underground mining.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41784552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Monitoring of the mining waste neutralization facility of LW Bogdanka 监测波格丹卡LW采矿废料中和设施

IF 1.6 4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-06-12 DOI: 10.46544/ams.v28i1.19

{"title":"Monitoring of the mining waste neutralization facility of LW Bogdanka","authors":"","doi":"10.46544/ams.v28i1.19","DOIUrl":"https://doi.org/10.46544/ams.v28i1.19","url":null,"abstract":"Investing in renewable energy sources bringing direct profits from unattractive areas is one of the most advantageous ways of wastelands revitalization. In the case of post-mining dumps, it is realized by using photovoltaics and wind turbines. Analyzes showed that the greatest benefits can be acquired from photovoltaic farms, mainly due to the simplicity of their design and principles of operation, as well as the quick return on investment - up to 7 years. The construction of wind turbines is more complicated. Despite the favorable conditions of the mining dumps (elevated areas, which are located mainly away from residential buildings), the construction of the turbine requires more effort in designing and installation work, mainly due to the necessity of building the foundations. \u0000Methods for revitalizing mine dumps by installing renewable energy systems have some limitations due to periodicity of operation (time of day, season), weather conditions (wind speed, temperature), expensive energy storage, etc. For this reason, real-time monitoring of climatic conditions is required. The following parameters are monitored: the average available solar energy (important for the assessment of the efficiency of photovoltaic cells), speed and direction of the wind (which affects the efficiency of wind turbines), changes in groundwater level (risk of flooding and periodic soil softening), soil and air temperature (air – affects the choice of the method of revitalization, soil – affects the preservation of soil) and dust concentration, which affects the degree of contamination of the photovoltaic modules and thus the efficiency of the photovoltaic (PV) power plant. The presentation includes interesting data that was obtained during the tests.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48038582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The socio-environmental challenges in the transition to sustainable bioeconomy: a review 向可持续生物经济转型中的社会环境挑战:综述

IF 1.6 4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-06-12 DOI: 10.46544/ams.v28i1.09

{"title":"The socio-environmental challenges in the transition to sustainable bioeconomy: a review","authors":"","doi":"10.46544/ams.v28i1.09","DOIUrl":"https://doi.org/10.46544/ams.v28i1.09","url":null,"abstract":"The bioeconomy has been proposed worldwide as a way to combat global environmental and socio-economic challenges, from climate change to income diversification and food security. Consequently, the term \"bioeconomy\" has gained considerable attention in the economic field over the last 15 years. Interestingly, an alleged global sustainable development model has become the subject of intense sustainability debate among researchers in recent years. The sustainability of the bioeconomy itself remains unanswered today. Most of the previous studies on sustainable bioeconomy focused on the analysis of the impacts on technology related to environmental issues while overlooking the socio-environmental implications and excluding society. Meanwhile, various studies highlight potential socio-environmental negative impacts associated with the new economic model. It is possible that the increased use of biological resources could further compromise ecosystems and create increasing social and ethical issues. Furthermore, this economic model could bring new environmental challenges related to the excessive use of soil and water. Therefore, the purpose of this paper is to examine and identify potential socio-environmental sustainability challenges and pitfalls that need to be addressed in order to ensure a successful transition to a sustainable bioeconomy. Following a systematic literature review, scientific studies and field reports were selected for this review after searching Google Scholar, Web of Science and Scopus databases. The results identified a number of potential key socio-environmental concerns related to the transition to the bioeconomy.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43320443","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Prevent of clogging via a mathematical model of heat transfer in submerged entry nozzle 利用浸入式水口传热数学模型防止堵塞

IF 1.6 4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-06-12 DOI: 10.46544/ams.v28i1.06

{"title":"Prevent of clogging via a mathematical model of heat transfer in submerged entry nozzle","authors":"","doi":"10.46544/ams.v28i1.06","DOIUrl":"https://doi.org/10.46544/ams.v28i1.06","url":null,"abstract":"Clogging of the steel in the submerged entry nozzle (SEN) is mainly due to the agglomeration and/or interaction of the steel with the SEN refractory material. However, the continuous casting steel also leads to clogging - the freezing of the steel in the SEN at the beginning of the casting. The freezing of the steel in the SEN results mainly in the change in the geometry, the low casting temperature of steel, the insufficient preheating of the SEN and the low initial casting speed. To eliminate the problems of steel freezing at the beginning of continuous casting, the authors solved them using a mathematical model of heat transfer in the SEN. Using the mathematical model, it is possible to simulate the layout of temperatures in the SEN and the temperature of the steel at the interface of steel - the inner surface of the SEN. To determine the temperature layout in the SEN after installation on the tundish, a method of measuring the decreased average temperatures of the SEN by free convection after heating was used. Based on the analysis of the current state using simulations in a mathematical model, it is possible to define conditions for preventing the freezing of steel in the SEN when the wall thickness or isolation thickness is changing.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41890591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ecological assessment of Uncle Sam Gulch Creek water quality under conditions of acid mine drainage 酸性矿井排水条件下山姆大叔溪河水质生态评价

IF 1.6 4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-06-12 DOI: 10.46544/ams.v28i1.14

{"title":"Ecological assessment of Uncle Sam Gulch Creek water quality under conditions of acid mine drainage","authors":"","doi":"10.46544/ams.v28i1.14","DOIUrl":"https://doi.org/10.46544/ams.v28i1.14","url":null,"abstract":"The current stage of subsurface use development is accompanied by an annual increase in post-mining territories. This is partly due to a change in funding priorities in this area and their widespread reorientation to the search for alternative sources of raw materials to ensure the development of modern high-tech industries. One of the biggest threats to the environment in this development is the deterioration of the freshwater quality due to poor management of abandoned mining areas. And one of the most significant problems is often created by acid mine drainage.\u0000As a part of the study, information on the current environmental state of a past American mining territory located near Basin, Montana, USA, was analyzed and summarized; a conceptual exposure model was created regarding the studied natural and technogenic interactions; systematization and data updating on temporal and spatial changes in the qualitative characteristics of surface waters that are in direct contact with the abandoned mine were carried out; the level of efficiency of implemented reclamation works on the territory was determined.\u0000The results of the water quality environmental assessments proved that the measures taken thus far are absent of a sufficient level of effectiveness for its full rehabilitation. To accelerate the process of changing the water quality of the investigated water object, both in terms of condition and degree of purity, a combination of a passive treatment system coupled with an artificial reduction of acid mine drainage volumes was suggested.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42328024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The rate of use of the Circular Economy in individual sectors 循环经济在各个部门的使用率

IF 1.6 4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-06-12 DOI: 10.46544/ams.v28i1.02

{"title":"The rate of use of the Circular Economy in individual sectors","authors":"","doi":"10.46544/ams.v28i1.02","DOIUrl":"https://doi.org/10.46544/ams.v28i1.02","url":null,"abstract":"Although the concept of the circular economy as a term was first mentioned in 2015, when the \"Action Plan for the circular economy\" was adopted at the European level, it is still not possible to speak of a sufficient knowledge base in this area. The Action Plan (COM (2015) 614) can be seen as an initial strategic document that sets out a concrete and ambitious roadmap for implementing the Sustainable Development Agenda 2030. However, the European Green Agreement cannot be left out in this context either (COM(2019) 640). It is seen as a new growth strategy to transform the EU into a fair and prosperous society with a modern, competitive, resource-efficient economy, with net greenhouse gas emissions expected to be zero by 2050 and economic growth independent of resource use. A new EU circular economy action plan - Towards a cleaner and more competitive Europe was also adopted in 2020 (COM(2020) 98). The main priority areas are measures focusing on the value chains of key products electronics and ICT (information and communication technologies), batteries and vehicles, plastics, textiles, packaging, construction and buildings, food, water and nutrients measures covering all links in the value chain from production to consumption, repair and refurbishment, waste management up to the return of raw materials back to the economy and their use in the production cycle in the form of secondary raw materials. The transition to a circular economy also includes a revision of the European waste directives: on waste, on packaging and packaging waste, on landfills, on batteries and accumulators and used batteries and accumulators, and on waste electrical and electronic equipment. In order for all of this to be possible, it is necessary to know the amount of waste produced by individual sectors, which is also dealt with in our article.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49177348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterisation of Dendromass Ash Fractions Captured in Power Plant with a View to their Further Utilization 电厂采出的松质灰级分的特性及其进一步利用

IF 1.6 4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-06-12 DOI: 10.46544/ams.v28i1.18

{"title":"Characterisation of Dendromass Ash Fractions Captured in Power Plant with a View to their Further Utilization","authors":"","doi":"10.46544/ams.v28i1.18","DOIUrl":"https://doi.org/10.46544/ams.v28i1.18","url":null,"abstract":"Small and larger dendromass-burning power plants entrust the management of the ash waste to companies which guarantee its ecological disposal. In order to specify the correct disposal or further utilization of the dendromass ash, the various slag and fly ash fractions from a power plant combusting waste wood were analyzed and compared in this work. The plant produces approximately 660 t of ash waste/year. The efficiency of combustion depends on the season, dendromass quality and plant operating conditions. The proportion of carbon residue (incomplete burnt wood-chips) in slag and ash fractions increases in the winter months. Except for the seasonal carbon residue, the crumble slag and fine ashes captured in the flue channel and cyclone are similar in chemical composition and phase (28–44 wt.% CaO; 25–35% SiO2; ~7% Al2O3; ~5% K2O; ~4.5% MgO). The finest ash captured in the fabric filter contains less silicon and alumina compounds (<7% SiO2; ~2% Al2O3) and a significantly higher portion of potassium and sulphur, and chlorine compounds (approx. 13%K2O; 3.5%S; <1.5% Cl) which are well soluble in water. All ash fractions produce strongly alkaline leaches in first contact with water. The differences in the chemical composition of captured ashes provide an impulse for considering the possibility of effective re-utilization of individual fractions.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48604295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Relieving Pressure and Improving Permeability of Soft Coal at Top and Bottom by Hydraulic Cavitation 水力空化卸压提高顶底软煤透气性

IF 1.6 4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-06-12 DOI: 10.46544/ams.v28i1.13

{"title":"Relieving Pressure and Improving Permeability of Soft Coal at Top and Bottom by Hydraulic Cavitation","authors":"","doi":"10.46544/ams.v28i1.13","DOIUrl":"https://doi.org/10.46544/ams.v28i1.13","url":null,"abstract":"For enhancing the effect of gas extraction, applying Wuyang Coal Mine in China as the engineering background, the technology of hydraulic cavitation at the top and bottom of soft coal (HCTBSC) with low permeability was put forward. FLAC3D was utilized to build the calculation model, and Tecplot was employed to process data of the results, revealing the characteristics of stress variation in coal seam for different cavitation radius and different distribution forms of cavitation. The field test scheme of HCTBSC was determined to verify the simulation results. Results show that the effectiveness of stress relief (ESR) is controlled by the cavitation radius and cavitation distribution forms. The dimension of pressure relief emanates via the cavitation elongating outward with the cavitation radius, and the stress changes in the coal are different due to different cavitation distribution forms. The field test proves that the technology of HCTBSC is more effective in relieving pressure, increasing the productiveness of gas extraction, and decreasing the scourge of coal and gas protrusion. The obtained conclusions in this study provide guidance for the hydraulic cavitation application in soft coal.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46307645","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Possibilities of exploitation of graphite deposit in the Czech republic 捷克共和国石墨矿床开采的可能性

IF 1.6 4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-06-12 DOI: 10.46544/ams.v28i1.15

引用次数: 0

The State Of International Technology Transfer In The Northern Europe Region: Comparative Analysis By Modern Multiple Criteria Methods 北欧地区国际技术转移状况的现代多准则比较分析

IF 1.6 4区地球科学

Acta Montanistica Slovaca Pub Date : 2023-06-12 DOI: 10.46544/ams.v28i1.07

{"title":"The State Of International Technology Transfer In The Northern Europe Region: Comparative Analysis By Modern Multiple Criteria Methods","authors":"","doi":"10.46544/ams.v28i1.07","DOIUrl":"https://doi.org/10.46544/ams.v28i1.07","url":null,"abstract":"The undiminished importance of international technology transfer (ITT) consistently attracts attention from scientists, businesses, and governments. The OECD acknowledges the benefits of the ITT and emphasises that European countries should be open to new opportunities that ITT brings in each economic sector, from primary to tertiary. The mining sector does not represent an exception. ITT contributes to job creation and growth worldwide by creating new markets and expanding existing ones. ITT transforms human fifes and surrounding very quickly. The TT improves production efficiency, stimulates growth; reformats patterns of sectors; brings new opportunities to every capital owner, and improves economic well-being among people worldwide. At the same time, it changes the value system and, in many cases, seriously harms the environment. Despite the researchers' focus on ITT, more complex research still needs to assess the factors of such phenomena. The article contributes to creating a more comprehensive methodology for evaluating the ITT environment not only in the mining sector but also in the other field of the primary sector. For analysis, the authors use popular Multiple Criteria Decision Aid (MCDA) methods and develop objective methods for criteria weights calculation. The study evaluates and compares internal conditions for OECD Northern Europe countries to implement, develop and share technologies. For this purpose, a set of 16 quantitative criteria was created; their hierarchical structure with four categories was set. A detailed comparative analysis of the state of the countries in terms of favourable conditions for the ITT was performed.","PeriodicalId":50889,"journal":{"name":"Acta Montanistica Slovaca","volume":" ","pages":""},"PeriodicalIF":1.6,"publicationDate":"2023-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46274988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1