scholarly journals Ecological Risks in the Coal Mining in Tuva

2020 ◽  
Vol 17 (3) ◽  
pp. 16-29
Author(s):  
V. I. Zabelin ◽  
S. O. Ondar
Keyword(s):  
Coal Mining ◽  
Underground Mining ◽  
Noise Pollution ◽  
Ecological Risks ◽  
State University ◽  
Coal Basin ◽  
Treatment Facilities ◽  
Spontaneous Combustion Of Coal ◽  
Mandatory Use ◽  
Made In

The problems of ecological risks and technogenic hazards in the coal mining in Tuva based on the materials of geoecological research of the Tuva Institute for the Integrated Development of Natural Resources of the SB RAS and Tuva State University in 2015—2019 are considered. The results of coal analyzes of two typical coal mining of the Ulug-Khem coal basin with open and underground mining are presented, and the danger of dust and noise pollution of nearby pastures, catastrophic pollution of coal from the spawning of the Elegest spawning river, fires due to spontaneous combustion of coal are emphasized. There is possible influence of trace elements of coal — heavy metals, arsenic, mercury, etc. on the environment. Recommendations on improving the design and organization of coal mining enterprises, in particular on the placement of dumps and reclamation of their surface, as well as on the mandatory use of treatment facilities are made in the article.

scholarly journals Opportunities of re-establishing underground mining in the borsod coal basin in north-eastern Hungary

2019 ◽  
Vol 2 (1) ◽  
pp. 532-540
Author(s):  
József Molnár ◽  
Ákos Debreczeni ◽  
Richárd Tompa
Keyword(s):  
Coal Mining ◽  
Power Plants ◽  
Underground Mining ◽  
Three Dimensional ◽  
Paper Analysis ◽  
High Rate ◽  
Coal Basin ◽  
Mining Operations ◽  
The North ◽  
North Eastern

Abstract Numerous underground coal mines were in operation in the Borsod coal basin in northeastern part of Hungary until the beginning of this century. The main area of utilization of the mined out coal beside power and heat generation was supplying households with fuel mostly for heating. In the beginning of the 1990ies the power plants in question were shut down for economic, environmental and technical reasons. Consequently all the mines were closed no later than 2004 and thousands of miners lost their jobs. A new perspective of coal mining can be enabled by other ways of utilization of coal, e.g. coal chemistry, etc. Safe and modern equipment and technology enabling high output, clean coal, furthermore high rate of yield are targeted. Opportunity of sustainable underground coal mining in the north-eastern part of Hungary is discussed in the paper. Analysis of the properties of coal deposits using three-dimensional (3D) modelling are used for considering opportunities of new mining operations. Models are being developed.

Evolution of Microclimatic Conditions in Paskov Mine / Ewolucja Warunków Mikroklimatycznych W Kopalni Paskov

2012 ◽  
Vol 57 (4) ◽  
pp. 1045-1055
Author(s):  
Pavel Zapletal ◽  
Pavel Prokop ◽  
Vítězslav Košňovský
Keyword(s):  
Coal Mining ◽  
Mining Activity ◽  
Mining Engineering ◽  
Special Program ◽  
Main Subject ◽  
Coal Basin ◽  
Research Activities ◽  
Microclimatic Conditions ◽  
Technical University

Abstract The main subject of this paper focuses on scientific and research activities conducted in the Institute of Mining Engineering and Safety of the VŠB-Technical University of Ostrava. Cooperation between the VŠB-Technical University of Ostrava and OKD A.S., the only representative of coal mining in the Ostrava-Karviná coal basin, has recently begun to develop again. This paper describes an example discussed in a certain study, which has been undertaken for the Paskov mine, OKD a.s., dealing specifically with the evolution of microclimate parameters in mines that depend on the progress of mining activity at deeper levels over a period of several years. To this end, a special program, aimed at determination of the necessary refrigerating capacity, was established at the VŠB-Technical University of Ostrava.

Second International scientific conference «Vegetation of Eastern Europe and Northern Asia» (Bryansk, 12­–13 October 2020)

2020 ◽  
pp. 149-153
Author(s):  
V. V. Neshataev ◽  
D. D. Karsonova ◽  
A. A. Kurka
Keyword(s):  
Eastern Europe ◽  
Vegetation Classification ◽  
Scientific Conference ◽  
State University ◽  
Research Projects ◽  
Joint Research ◽  
Northern Asia ◽  
Oral Presentations ◽  
Made In ◽  
Second International

On October 12th and 13th, 2020, Bryansk State University held an international scientific online conference "Vegetation of Eastern Europe and Northern Asia". The Proceedings of abstracts includes 66 reports by 118 authors and co-authors from 5 countries, 34 localities and 51 organizations. During the meeting, 41 oral presentations were made. In conclusion, it was noted that it is necessary to promote an integration of geobotanists and florists from different regions in order to implement joint research projects. In particular, this concerns a project of making a vegetation classification in Russia.

scholarly journals Greenhouse Whitefly Control on Petunias, Michigan, 1993

1994 ◽  
Vol 19 (1) ◽  
pp. 333-333
Author(s):  
D. R. Smitley ◽  
T. W. Davis
Keyword(s):  
Michigan State University ◽  
State University ◽  
Single Plant ◽  
Greenhouse Whitefly ◽  
Clay Pots ◽  
Made In

Abstract Petunia plants were raised from seed in 6 inch clay pots for 10 wks reaching a height of 10-12 inches in a research greenhouse infested with whitefly at Michigan State University. Each treatment including a control was replicated 6 times. Each replicate was a single plant. Precounts of 5 leaves taken randomly from each plant were completed on 14 and 21 Jul. All immature whitefly (pupae and larvae) were counted. The treatments were blocked based on these precounts. Applications were applied on 22, 30 Jul and 6 Aug with a R&D CO2 sprayer with a single 8008 nozzle at 50 psi until first runoff. Postcounts were made in the same manner as precounts on 28 Jul, 4, 12 Aug.

Modeling of the stress-state longwall face during coal mining with the technology of roof management complete drop and stowing

2020 ◽  
pp. 99-106
Author(s):  
I. E. Mazina ◽  
A. A. Stel’makhov ◽  
L. F. Mullagalieva
Keyword(s):  
Coal Mining ◽  
Strain State ◽  
Underground Mining ◽  
Negative Impact ◽  
Hydrological Regime ◽  
Coal Bed ◽  
Stress Strain ◽  
Environmental Friendliness ◽  
Modeling And Analysis ◽  
Stress Strain State

Underground mining of coal deposits has a negative impact on all components of the environment. When developing a coal deposit, it is coal mining technology that determines the scale and consequences of the negative impact. Changes in the stress-strain state of the geo-environment can lead to a violation of the hydrological regime, increased gas emission from the host rocks, the initiation of gas-dynamic processes. Choice of roofing management technology - as a geotechnological method of natural and technical system management determines the environmental friendliness of coal mining and creates safety conditions. The article deals with the technology of roofing control during coal production. For this purpose mathematical modeling and analysis of stress-strain state of the bottomhole part of the coal bed for the conditions of S.M. Kirov is performed. As a result of modeling, two technologies of roof control were analyzed - complete caving and stowing. For the worked out clearing leaves filled with either caving rocks or stowing material, there are characteristic unloading zones in the massif to be worked and overworked, as well as pressure reference zones, which fall on the parts of the pillars associated with the lava. It was found out that the application of the stowing technology creates conditions for minimization of gravitational stresses in the geoenvironment, as well as significantly reduces the potential energy of form change.

INDUSTRIAL WASTEWATER TREATMENT TODAY AND TOMORROW

1994 ◽  
Vol 30 (3) ◽  
pp. 109-117 ◽  
Author(s):  
H. B. Pols ◽  
G. H. Harmsen
Keyword(s):  
Industrial Wastewater ◽  
Point Of View ◽  
Treatment Technique ◽  
Physical Treatment ◽  
Treatment Techniques ◽  
Waste Production ◽  
Treatment Facilities ◽  
Multi Criteria Analysis ◽  
Made In

The way we treat our wastewater nowadays is not always favourable for improving the quality of our environment. Indeed, the quality of the surface waters has increased by the high investments we have made in our treatment facilities, but it cannot be denied that these same facilities have a major impact on other environmental issues. From ibis point of view the question is raised as to which treatment techniques are favourable not only for the water phase, but also from the viewpoint of energy, waste production and renewal of resources. Over thirty techniques, all of them chemical/physical treatment techniques, have been reviewed, especially for the treatment of industrial wastewaters. More importantly, these techniques have been analysed thoroughly in a multi-criteria-analysis, not only for their environmental impacts, but also on criteria influencing the implementation of these techniques. From ibis multi-criteria-analysis the most favourable treatment technique to be developed and implemented may be chosen.

scholarly journals Hindcasting and forecasting of regional methane from coal mine emissions in the Upper Silesian Coal Basin using the online nested global regional chemistry–climate model MECO(n) (MESSy v2.53)

2020 ◽  
Vol 13 (4) ◽  
pp. 1925-1943 ◽  
Author(s):  
Anna-Leah Nickl ◽  
Mariano Mertens ◽  
Anke Roiger ◽  
Andreas Fix ◽  
Axel Amediek ◽  
...  
Keyword(s):  
Coal Mining ◽  
Spatial Resolution ◽  
Radiative Forcing ◽  
Climate Model ◽  
Mitigation Strategies ◽  
Climate Mitigation ◽  
Coal Basin ◽  
Airborne Measurements ◽  
Upper Silesian Coal Basin ◽  
The Impact

Abstract. Methane is the second most important greenhouse gas in terms of anthropogenic radiative forcing. Since pre-industrial times, the globally averaged dry mole fraction of methane in the atmosphere has increased considerably. Emissions from coal mining are one of the primary anthropogenic methane sources. However, our knowledge about different sources and sinks of methane is still subject to great uncertainties. Comprehensive measurement campaigns and reliable chemistry–climate models, are required to fully understand the global methane budget and to further develop future climate mitigation strategies. The CoMet 1.0 campaign (May to June 2018) combined airborne in situ, as well as passive and active remote sensing measurements to quantify the emissions from coal mining in the Upper Silesian Coal Basin (USCB, Poland). Roughly 502 kt of methane is emitted from the ventilation shafts per year. In order to help with the flight planning during the campaigns, we performed 6 d forecasts using the online coupled, three-time nested global and regional chemistry–climate model MECO(n). We applied three-nested COSMO/MESSy instances going down to a spatial resolution of 2.8 km over the USCB. The nested global–regional model system allows for the separation of local emission contributions from fluctuations in the background methane. Here, we introduce the forecast set-up and assess the impact of the model's spatial resolution on the simulation of methane plumes from the ventilation shafts. Uncertainties in simulated methane mixing ratios are estimated by comparing different airborne measurements to the simulations. Results show that MECO(3) is able to simulate the observed methane plumes and the large-scale patterns (including vertically integrated values) reasonably well. Furthermore, we obtain reasonable forecast results up to forecast day four.

scholarly journals Organizing Independent Activity in EFL Teaching in Ethnically Diverse Classrooms at the University of the Coal Mining Region

2020 ◽  
Vol 174 ◽  
pp. 04050
Author(s):  
Tatyana Sergeichik ◽  
Oksana Greenwald
Keyword(s):  
Coal Mining ◽  
Ethnic Diversity ◽  
Foreign Students ◽  
Raw Materials ◽  
Educational Process ◽  
State University ◽  
Highly Qualified ◽  
Mining Region ◽  
Efl Teaching ◽  
The University

Training of highly qualified specialists is a significant factor for the consistent progress in any branch of economics. Kemerovo State University provides training of specialists for the coal mining region in Russia. Nowadays, the University tends to increase the proportion of foreign students as well. Most of these are students from neighboring countries, such as Tajikistan, Uzbekistan, Kyrgyzstan, Kazakhstan, where raw materials industries, including mining, are developed. Taking into account the multi-ethnic diversity of students at Kemerovo State University, we analyzed the experience and determined the worthwhile forms of organizing independent activity in EFL teaching. Among the forms of independent activity, we introduced independent reading, preparing thematic presentations, written tasks based on video content, and writing thematic essays. Organizing independent work in the educational process, which involves a large number of multinational groups of students, we took into account the following conditions. We considered such particular qualities of contemporary students as their general need in flexible learning environment as well as in self-expression; we took into account their interest in new knowledge and motivation for self- improvement, and at the same time, lack of desire for completing reproductive types of tasks, along with fragmented thinking.

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