scholarly journals Technogenic carbonaceous objects of the Chervonohrad mining and industrial district and some technical solutions for their using

2019 ◽  
Vol 4 (181) ◽  
pp. 45-65
Author(s):  
Dmytro BRYK ◽  
Oleg GVOZDEVYCH ◽  
Lesya KULCHYTSKA-ZHYHAYLO ◽  
Myroslav PODOLSKYY
Keyword(s):  
Coal Mining ◽  
Coal Ash ◽  
Energy Utilization ◽  
Coal Waste ◽  
Coal Production ◽  
Industrial District ◽  
Waste Dumps ◽  
Wide Range ◽  
Coal Wastes ◽  
The Impact

Ukraine has significant coal resources. Chervonohrad Mining and Industrial District is the main coal complex in the west of Ukraine. In recent years, the average annual coal production in the mines of Chervonohrad Mining and Industrial District has amounted to 1.5 bn t, coal ash varies over a wide range of 25 to 53 %, average coal ash content of about 40 %. Coal mining has produced millions of tons of coal waste every year. Concentration of technogeneous coal objects (mines, mining infrastructure, coal-mining waste dumps and wastes of coal enrichment) in a relatively small area has caused environmental degradation. Therefore, technological and environmental aspects of carbon-containing technogenic objects are particularly important and actual. Coal-waste dumps in the territory of Chervonohrad Mining and Industrial District are characterized in detail. The dumps cover different areas – from 9–10 to 29–30 ha, the height of the dumps reaches 62 m at the mostly heights of 25–40 m. The total waste deposit in the dumps of existing mines has a volume of more than 20 million m3. The coal wastes from Mezhyrichanskaya mine coal-waste dump was investigated to determine the suitability for thermochemical processing. Technical characteristics of taken coal-waster samples is presented. The technogenic carbonaceous objects and the impact to the environment are evaluated. The developed and patented technical and technological solutions for the technogenic carbonaceous objects using are considered. It is shown that the concept of industrial development of coal wastes dumps is based on two aspects – extraction of valuable mineral components and energy utilization of carbonaceous wastes of coal production. Its patented as Patents of Ukraine technological schemes for terrestrial process in of solid carbonaceous raw material from dumps and sludges with the production of coal tar and synthesis gas CO + H2 are presented, as well as the scheme of a system for utilization of heat from coal dump. Recommendations for the implementation of innovative technologies are based on the results of the laboratory research. The purpose of the resolution is to obtain valuable components and energy from coal wasters while improving the environment.

scholarly journals Studies of the Possibility of Using Coal Mining Waste in Concrete for Mine Construction

2020 ◽  
Vol 174 ◽  
pp. 01012
Author(s):  
Natalya Gilyazidinova ◽  
Vladimir Duvarov ◽  
Akparali Mamytov
Keyword(s):  
Coal Mining ◽  
Liquid Glass ◽  
Setting Time ◽  
Fine Fraction ◽  
Mining Waste ◽  
Coal Waste ◽  
Technological Parameters ◽  
Optimum Quantity ◽  
Coal Wastes

The article discusses the possibility of using coal waste for the preparation of mine concrete. As a result of the research, scientific and prac- tical results were obtained. It has been experimentally proved that when a small fraction of coal, which is a waste of coal mining, is added to mine concrete, the strength of concrete decreases, but with a certain ratio of this strength it is sufficient to ensure the required properties. A series of experi- ments was carried out with the addition of liquid glass to the concrete to control the setting time of the mixture. The properties of coal wastes were determined and the possibility of their use in mine concrete was investigated. It has been established that the introduction of a fine fraction of coal in the optimum quantity into the composition of mine concrete is possible without reducing technological parameters.

scholarly journals Impact of basic risks, sanctions and adverse market conditions on the coal industry development in Russia over the period to 2040. Part II: Impact of risks and sanctions on the coal industry, and efficiency of the industry advancement scenarios in the post-crisis period

2020 ◽  
pp. 4-10
Author(s):  
Yu. A. Plakitkin ◽  
◽  
L. S. Plakitkina ◽  
K. I. Dyachenko ◽  
◽  
...  
Keyword(s):  
Technological Development ◽  
Coal Industry ◽  
Coal Production ◽  
Industry Development ◽  
Risk Scenarios ◽  
Social Risks ◽  
Wide Range ◽  
The World ◽  
The Future ◽  
The Impact

The external and internal challenges discussed in Part I of this article in Gornyi Zhurnal Issue 10, 2020, which are risk-critical for the coal industry of Russia, became a framework for the assessment of the impact exerted on the industry by sanctions and adverse conjuncture, as well as for the performance evaluation of the industry advancement scenarios. The maximum impact on the coal industry in Russia is exerted by risks connected with the coal market slump in the world. Furthermore, in recent years, coal demand suffers from depression due to some economical and technological development conditions in the world economy. The ecological pressure on the coal industry is also dynamized. Alongside with risks connected with the adverse conjuncture on the international and domestic markets, including risks of the limited market access, the increasingly higher importance is attached to the risks connected with sanctions imposed on the Russian economy. At the present time, the future of the coal industry in Russia is greatly uncertain. The governmental policy documents introduce a wide range of advancement routes for the coal industry with regard to potential risks. To find more accurate output margins in coal production, prediction and assessment of risk impact on the coal industry is required. The calculation of the risk impact on the coal industry using ERI/RAS model Riskugol shows that sanctions have never exerted any influence on the volumes of coal production and export in Russia. However, accretion of sanctions can appreciably reduce potentialities of the future advancement in the coal industry. The coal industry advancement scenarios are developed and used to assess the industry performance over the period to 2040. Despite higher efficiency of risk scenarios, they also feature higher social risks. Innovativity of the risk scenarios, which drastically improves labor efficiency in the industry, results in layoff and reduction of employees. To counterpoise social risks in the industry over the whole prediction period (even with regard to retirement rate), it is required to create 35–40 thousands of new jobs. This study has been partly supported by the Russian Foundation for Basic Research in the framework of R&D Project No. 18-010-00467 Development of Economic Indicators and Production Data for the Coal Industry Development in Russia up to 2035 with the Changing Vector of Global Technological Innovation due to Implementation of Industry 4.0 Program.

scholarly journals Low-carbon development of Kuzbass: coal mining and land reclamation

2021 ◽  
Vol 315 ◽  
pp. 02001
Author(s):  
Larisa Shutko ◽  
Lyudmila Samorodova ◽  
Anastas Ivanov
Keyword(s):  
Coal Mining ◽  
Systems Approach ◽  
Land Reclamation ◽  
Mine Reclamation ◽  
Coal Production ◽  
Low Carbon ◽  
Green Development ◽  
Future 2 ◽  
The Impact

The purpose of the study is to examine the adaptation of coal mining enterprises to the requirements of the Climate Agenda and the prospects for a low-carbon future of the Kuzbass region. The subject of the research is the impact of coal mining on the conservation of the region’s biocapacity and the future "green" development of Kuzbass on the basis of mine reclamation. The following tasks are tackled: 1. to show the role of mining enterprises in the movement of the region's economy towards a low-carbon future, 2. to determine the relationship between the coal production and the area of mined lands for the period 2013-2019, 3. to reveal the need to increase the mine reclamation rate and conserve the biodiversity of the region's ecosystem, 4. to forecast the growth of the area of mined land with an increase in coal production of more than 300 million tons, provided that the current socio-economic situation in the region remains unchanged. Research methods are elements of a systems approach, regression analysis, building a one-factor linear regression model using the IBM SPSS Statistics software.

scholarly journals Acid mine drainage (AMD) contamination in coal mines and the need for extensive prediction and remediation: a review

2021 ◽  
Vol 9 (1) ◽  
pp. 3129-3136
Author(s):  
Theophilus Ile Ojonimi ◽  
lemona C Okeme ◽  
Tina Phiri Chanda ◽  
Eneojo Godwin Ameh
Keyword(s):  
Heavy Metals ◽  
Acid Mine Drainage ◽  
Mine Drainage ◽  
Environmental Regulations ◽  
Atmospheric Oxygen ◽  
Coal Mines ◽  
Coal Waste ◽  
Acid Mine ◽  
Waste Dumps ◽  
The Impact

Globally, the major source of environmental pollution as a result of mineral exploitation and processing is acid mine drainage (AMD). AMD refers to outflowing streams of acidic constituents from pyrite-bearing ore mines. The exposure of pyrite (FeS2) in coal waste dumps to atmospheric oxygen and water in the presence of microbial communities promotes the formation of sulphuric acid which leaches out the inherent heavy metals into the mine discharge, a phenomenon called pyrite oxidation. AMDs are usually characterized by a convoy of toxic heavy metals, most of which are transition elements (copper, nickel, zinc, etc.) and arsenic at concentrations higher than the limits permitted by environmental regulations. The impact of this acidic discharge from coal mines on downstream/underground waters and farm lands within the corresponding mining zones have been severally reported by previous researchers, but not so much have been discussed on extensive prediction and remediation. It is in view of this that the current paper reviews the need for extensive prediction and remediation approach for coal mines under the following subheadings; General introduction, AMD sources identification, representative sampling, adoption of a prediction model, determination of AMD potential and quality via static and kinetic tests and the development of an economically sustainable remediation strategy. It is thought that this article would be useful to academia as well as policy makers that are responsible for the development and implementation of environmental regulations in coal mines.

scholarly journals Analysis of Trends of the Sustainable Development Strategy of Coal Industry in Kuzbass

2021 ◽  
Vol 278 ◽  
pp. 03030
Author(s):  
Irina Dymova ◽  
Yanina Formulevich ◽  
Olga Karpova ◽  
Igor Lyamkin
Keyword(s):  
Sustainable Development ◽  
Economic Development ◽  
Coal Mining ◽  
Development Strategy ◽  
Underground Mining ◽  
Coal Industry ◽  
Coal Production ◽  
The Sustainable Development ◽  
Social And Economic Development ◽  
The Impact

The article analyzes the trends of the strategy of sustainable development of coal industry in Kuzbass and the prospects for its development. The main problems connected with the coal enterprises operations are identified, possible ways of their solutions are presented within the framework of the adopted "Strategy for social-and-economic development of the region for the period up to 2035". Having analyzed the program under study, the proposals for its correction or addition in terms of improving the ecology of the region, social-and-economic development, preserving the natural landscape and biogeocenosis were made. The options for transporting coal and increasing the level of coal production technologies in underground mining were proposed. The article provides statistical data on coal mining for the period 2009-2020, and international experience of coal-mining countries. The authors consider the problems of export and transportation of coal, the impact of world prices on coal production. In addition, the authors of the article focus on the legal and legislative consolidation of the main conditions for control and regulation of the subsoil use in Kuzbass, make proposals for its effectiveness, in order to reduce social tension, environmental pollution, reduce the risk of earthquakes, and preserve coal resources for future generations.

Geotechnical aspects of coal waste embankments

1976 ◽  
Vol 13 (1) ◽  
pp. 27-39 ◽  
Author(s):  
Igor Holubec
Keyword(s):  
Engineering Design ◽  
Coal Mining ◽  
Mining Industry ◽  
Coal Waste ◽  
Coal Mining Industry ◽  
Coal Wastes ◽  
The Common ◽  
Geotechnical Problems

The expanding consumption of energy has created new demands for coal and increasing activity in the coal mining industry. However, the mining of coal is accompanied by coal wastes which are dumped in the form of coal waste embankments. The present concern for safety and the environment requires an analysis of the geotechnical problems associated with the construction of these embankments to assure acceptable engineering design. This paper discusses the properties of the coal wastes and the behaviour of coal waste embankments which differ from the common earth embankments that the geotechnical engineer has to deal with.

Mining waste dumps – modern monitoring of thermal and gas activities

2015 ◽  
Vol 31 (1) ◽  
pp. 155-182 ◽  
Author(s):  
STANISŁAW WASILEWSKI ◽  
PRZEMYSŁAW SKOTNICZNY
Keyword(s):  
Thermal State ◽  
Field Studies ◽  
Mining Waste ◽  
Coal Waste ◽  
Wind Rose ◽  
Large Area ◽  
Fire Hazards ◽  
Stage Of Development ◽  
Waste Dumps ◽  
The Impact

Abstract Mining waste dumps are permanently incorporated in the landscape of the mining areas and exert an impact on the environment in many ways. The presence in the massif of a dump of carbonaceous substances often leads to the formation of fire hazards. Monitoring the activity of a newly created coal waste dump or of one under fire plays an extremely important role in fire prevention activity. Under the current regulations it must be carried out both during the exploitation process and for many years afterwards. Monitoring a dump is targeted, among others, at detecting thermal and gas anomalies already at the initial stage of development and to undertake preventive measures to eliminate and minimize the impact and load of a dump for the environment and the health and life of humans. In the article selected results of a research project (Raport 2011) are shown; a method of monitoring fire hazards at dump wastes was proposed, which includes thermal scanning and thermal-gas monitoring by a borehole method aimed at fixed points in the dump. Monitoring the large area of a dump requires exploration of the thermal state of a significant area hence the accepted scanning of the area is with a precision thermal imaging camera during an air raid. Then at selected sites of the dump, long-term in-field studies were conducted using the wireless data collection system from scattered test holes, made of perforated pipes and equipped with temperature and gas probes (CO, CO2, O2). At the same time the changes of environmental conditions and changes in atmospheric state parameters were observed around the dump, the so-called wind rose, based on data recorded by the weather station.

scholarly journals Coordinated Speed Control Strategy for Minimizing Energy Consumption of a Shearer in Fully Mechanized Mining

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1224
Author(s):  
Zheng Zheng ◽  
Dilei Chen ◽  
Tao Huang ◽  
Guopeng Zhang
Keyword(s):  
Energy Consumption ◽  
Coal Mining ◽  
Rotational Speed ◽  
Critical Role ◽  
Energy Utilization ◽  
Coordination Strategies ◽  
Working Cycle ◽  
Study Results ◽  
Model Control ◽  
The Impact

As one of the major pieces of equipment in fully mechanized coal mining, the drum shearer plays a critical role in improving the efficiency and energy utilization in the coal mining production process. In this paper, an energy consumption model of a shearer, derived from the analysis of the cutting and traction resistances on the shearer during different processes within a working cycle, is established. Based on the derived model, control and coordination strategies between the two speeds are proposed to minimize the shearer’s energy consumption in unidirectional mining. The case study of a real coal mine shows that the proposed models are valid, and the optimal control of shearer speeds can effectively reduce the energy consumption by 5.16% in a working cycle. To gain further insights into the impact of traction speed and drum rotational speed on the shearer’s energy consumption, several speed coordination cases are employed to further compare with the optimized one. Our study results show that the energy consumption of a shearer can be decreased with the increase of traction speed while decreasing drum rotational speed in coordination.

Sign in / Sign up

Export Citation Format

Share Document