Temat: Coal mining - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Shaft liquidation method adjusted for high precipitation associated with climate change impact
Autorzy:: Szymała, Jan
Całus Moszko, Joanna
Janson, Ewa
Sobczak, Dagmara
Konsek, Stanisław
Powiązania:: https://bibliotekanauki.pl/articles/2201412.pdf
Data publikacji:: 2022
Wydawca:: Główny Instytut Górnictwa
Tematy:: coal mining
shaft liquidation
climate change
wydobycie węgla
likwidacja szybu
zmiana klimatu
Opis:: In connection with the implementation of the international project TEXMIN within the framework of the RFCS fund, a project for the liquidation of the Głowacki Shaft in Rybnik (Poland) was undertaken, which takes into account the effects of climate change, i.e. evaluation of the increase of precipitation in the region. In addition to the standard research undertaken before liquidation activities, precipitation data recorded by the Institute of Meteorology and Water Management from 1995 to 2019 was collected and the precipitation variability was analysed. As a result, a method for liquidation of the shaft was selected consisting of constructing a permeable backfill column in the shaft and using a shaft pipe filled with permeable backfill material. Metallurgical aggregate was identified as a suitable backfill material, for which degradation tests, filtration coefficient tests and an assessment of its impact on water quality were carried out. It has been determined that a backfill column constructed in this manner can fulfil its function as a long-term gravity-driven water flow.
Źródło:: Journal of Sustainable Mining; 2022, 21, 3; 216--227
2300-1364
2300-3960
Pojawia się w:: Journal of Sustainable Mining
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Numerical modeling of gas flow in coal pores for methane drainage
Autorzy:: Taheri, A.
Sereshki, F.
Ardejani, F. D.
Mirzaghorbanali, A.
Powiązania:: https://bibliotekanauki.pl/articles/970686.pdf
Data publikacji:: 2016
Wydawca:: Główny Instytut Górnictwa
Tematy:: coal mining
methane drainage
gas flow
numerical simulation
górnictwo węgla
odmetanowanie
przepływ gazu
symulacja numeryczna
Opis:: The sudden explosion of methane during underground coal mining is a major dilemma. To mitigate its occurrence and reduce the extent of methane diffusion, gas drainage operations are carried out before mining. This paper investigates methane gas flow in a coal block in order to calculate the pressure of gas and its molecule velocity for methane gas drainage operation. A coal piece surrounded by cleats was used for geometrical modeling and numerical simulation. Movements of fluid and gas molecules in a porous mediumwere successfully simulated. The numerical solution is based on COMSOL Multiphysics software. The validity of the numerical simulation was assessed using an analytical model with satisfactory results.
Źródło:: Journal of Sustainable Mining; 2016, 15, 3; 95-99
2300-1364
2300-3960
Pojawia się w:: Journal of Sustainable Mining
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The potential risk of environmental contamination by mercury contained in Polish coal mining waste
Autorzy:: Antoszczyszyn, T.
Michalska, A.
Powiązania:: https://bibliotekanauki.pl/articles/92049.pdf
Data publikacji:: 2016
Wydawca:: Główny Instytut Górnictwa
Tematy:: mercury content
bituminous coal mining waste
bituminous coal
mercury emission
mercury sources
zawartość rtęci
odpady górnicze
węgiel kamienny
emisja rtęci
źródła rtęci
Opis:: The paper contains reference literature analysis concerning mercury content in Polish bituminous coal and post-mining waste as well as the impact of mercury content on the environment. The aim of the paper was to determine the occurrence of the risk of contamination of the environment with mercury compounds found in demolition bituminous coal landfills. Mercury, due to its toxic properties has been classified among the most dangerous substances to human health. There are three groups of sources of mercury release into the environment: natural, anthropogenic and remission. Coal mining, its processing and use in the energy sector has the greatest relevance regarding the pollution of the environment with mercury compounds in Poland. A review of reference literature shows that the average content of mercury in Polish bituminous coal varies within a wide range of 41e399 ppb, which is conditional on the origin, age and type of coal. The production of coal has led to a number of facilities in the form of structurally and age-varied landfills, heaps and mining waste dumps. The content of mercury in postmining waste is in the range from approximately 55 to 380 ppb. The problem of environmental contamination with mercury has attracted considerable interest due to the effects that its concentration have in the biosphere. On the basis of the existing data it has been found that the content of mercury in soils in areas degraded by mining and processing of coal is even 10e16 times higher, compared to the geochemical background. It is necessary to conduct research in this area due to the limited results of research on mercury content in deposited waste from the preparation and flotation of Polish bituminous coals and the potential harmful effect of mercury on the environment. The paper is dedicated to the mercury content in waste from the extraction and processing of bituminous coal.
Źródło:: Journal of Sustainable Mining; 2016, 15, 4; 191-196
2300-1364
2300-3960
Pojawia się w:: Journal of Sustainable Mining
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: True cost of coal: Coal mining industry and its associated environmental impacts on water resource development
Autorzy:: Masood, Noshin
Hudsone-Edwards, Karen
Farooqi, Abida
Powiązania:: https://bibliotekanauki.pl/articles/1839030.pdf
Data publikacji:: 2020
Wydawca:: Główny Instytut Górnictwa
Tematy:: coal mining
coal energy
groundwater quality
environmental impacts
sustainable development
wydobycie węgla
energetyka węglowa
jakość wód podziemnych
wpływ na środowisko
zrównoważony rozwój
Opis:: Coal is a strategic and essential resource that ensures quality of life, energy security and sustainable development. Being the cheapest source of energy, it is the second after oil that is used to generate 40% of the world's electricity. However, traditional and conventional coal fuel extraction can threaten human health bycontaminating air and water, harming land, and contributing to global warming. The environmental impacts associated with conventional methods of coal mining and consumption can affect all components of the environment, and these impacts may be beneficial or harmful, permanent or temporary, repairable or irreparable, and reversible or irreversible in nature. These effects require considering of changing the production and consumption of coalwithin a technological framework. Coal mining operationscan cause both quantitative and qualitative impacts on water systems in and around mining areas. This paper reviews the impacts of coal mining on water resource development. Land subsidence, disruption of hydrological channels, flooding, and contamination of water resources and depletion of water table are the major measurable impacts of mining activity on the hydrological environment.
Źródło:: Journal of Sustainable Mining; 2020, 19, 3; 135-149
2300-1364
2300-3960
Pojawia się w:: Journal of Sustainable Mining
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: COVID-19: A spectio-temporal analysis of air quality status in coking coalfields of India due to nationwide lockdown in India
Autorzy:: Singh, Amarjeet
Singh, Gurdeep
Powiązania:: https://bibliotekanauki.pl/articles/1839037.pdf
Data publikacji:: 2020
Wydawca:: Główny Instytut Górnictwa
Tematy:: air pollution
air quality index
AQI
coal mining
COVID-19
lockdown
zanieczyszczenie powietrza
indeks jakości powietrza
wydobycie węgla
Opis:: A novel infectious corona virus disease (COVID-19) was identified in the month of December 2019. It has now been announced as a worldwide pandemic by the World Health Organization. COVID-19 pandemic has positive impacts on the environmental pollutants. In present work, Coalfield areas of Jharia Coalfields (JCF), India have been taken as a case study to evaluate the effect of the lockdown on air quality at 10 locations. This study had been selected to estimate the reduction in concentration of pollutants likePM10, PM2.5, SO2, and NOx during 3 Seasons (summer, Post-Monsoon and winter season) in the year 2019 in comparison to the concentration during the lockdown period i.e. from April 2020 to June 2020. The study areas selected was as fire affected and non-fire affected areas of Jharia Coalfield to identify the contribution of pollutants in the mining area to establish the baseline concentration of Business as usual (BAU) vs. the lockdown condition. The average reduction in concentration of PM10, PM2.5, SO2 and NOx was observed as 18%, 14%, 22% and 26% respectively during the lockdown period in comparison with the annual average concentration. As observed, the AQI value at the selected monitoring sites in JCF was 1.5 times higher in comparison to the lockdown period. This study will provide the confidence to the regulatory body for strict implementation of the applicable air quality standard/policies in the mining areas. The study will also provide confidence to the regulatory body in making emission control strategies for improvement of environmental conditions and human health.
Źródło:: Journal of Sustainable Mining; 2020, 19, 4; 243-253
2300-1364
2300-3960
Pojawia się w:: Journal of Sustainable Mining
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: True cost of coal: Coal mining industry and its associated environmental impacts on water resource development
Autorzy:: Masood, Noshin
Hudsone-Edwards, Karen
Farooqi, Abida
Powiązania:: https://bibliotekanauki.pl/articles/1839024.pdf
Data publikacji:: 2020
Wydawca:: Główny Instytut Górnictwa
Tematy:: coal mining
coal energy
groundwater quality
environmental impacts
sustainable development
wydobycie węgla
energetyka węglowa
jakość wód podziemnych
wpływ na środowisko
rozwój zrównoważony
Opis:: Coal is a strategic and essential resource that ensures quality of life, energy security and sustainable development. Being the cheapest source of energy, it is the second after oil that is used to generate 40% of the world's electricity. However, traditional and conventional coal fuel extraction can threaten human health bycontaminating air and water, harming land, and contributing to global warming. The environmental impacts associated with conventional methods of coal mining and consumption can affect all components of the environment, and these impacts may be beneficial or harmful, permanent or temporary, repairable or irreparable, and reversible or irreversible in nature. These effects require considering of changing the production and consumption of coalwithin a technological framework. Coal mining operationscan cause both quantitative and qualitative impacts on water systems in and around mining areas. This paper reviews the impacts of coal mining on water resource development. Land subsidence, disruption of hydrological channels, flooding, and contamination of water resources and depletion of water table are the major measurable impacts of mining activity on the hydrological environment.
Źródło:: Journal of Sustainable Mining; 2020, 19, 3; 135-149
2300-1364
2300-3960
Pojawia się w:: Journal of Sustainable Mining
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Influence of anti-pyrogenic materials on coal mining wastes tendency to self-ignite
Autorzy:: Janoszek, T.
Gogola, K.
Bajerski, A.
Powiązania:: https://bibliotekanauki.pl/articles/92196.pdf
Data publikacji:: 2016
Wydawca:: Główny Instytut Górnictwa
Tematy:: endogenic fire
coal mining wastes
fire prevention
anti-pyrogenic material
pożar endogeniczny
odpady górnicze
zapobieganie pożarom
materiał anty-pirogeniczny
Opis:: The aim of this work was to investigate the influence of anti-pyrogenic materials with use of Combustion By-Products (CBP) on the tendency of coal mining waste to self-ignite in laboratory conditions. The tested material sample was a mixture of coal waste with an addition of anti-pyrogenic material based on coal combustion by-products. The laboratory installation to test the properties of anti-pyrogenic materials is presented. The temperature of the tested sample as well as the concentration of carbon monoxide in exhaust gas were chosen as the parameters which determine the properties of anti-pyrogenic materials to reduce the self-heating process of coal waste. Laboratory tests of material samples were performed in a temperature range from 40°C to 500°C, at time interval of 350 s.
Źródło:: Journal of Sustainable Mining; 2016, 15, 4; 170-174
2300-1364
2300-3960
Pojawia się w:: Journal of Sustainable Mining
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: The forecast of mining-induced seismicity and the consequent risk of damage to the excavation in the area of seismic event
Autorzy:: Drzewiecki, J.
Piernikarczyk, A.
Powiązania:: https://bibliotekanauki.pl/articles/92119.pdf
Data publikacji:: 2017
Wydawca:: Główny Instytut Górnictwa
Tematy:: hard coal mining
forecasts of seismic events
seismic energy
threat of excavation destruction
wydobycie węgla kamiennego
prognozowanie zdarzeń sejsmicznych
energia sejsmiczna
Opis:: The Central Mining Institute has developed a method for forecasting the amount of seismic energy created by tremors induced by mining operations. The results of geophysical measurements of S wave velocity anomalies in a rock mass or the results of analytic calculations of the values of pressure on the horizon of the elastic layers are used in the process of calculating the energy. The calculation program which has been developed and adopted has been modified over recent years and it now enables not only the prediction of the energy of dynamic phenomena induced by mining but also the forecasting of the devastating range of seismic shock. The results obtained from this calculation, usually presented in a more readable graphic form, are useful for the macroscopic evaluation of locations that are potential sources of seismic energy. Forecasting of the maximum energy of seismic shock without prior knowledge of the location of the shock's source, does not allow shock attenuation that results from, for example, a distance of tremor source from the excavation which will be affected by seismic energy, to be taken into consideration. The phenomena of energy dissipation, which is taken into account in the forecasts, create a new quality of assessment of threat to the excavation. The paper presents the principle of a method of forecasting the seismic energy of a shock and the risk of damage to the excavation as a result of the impact of its energy wave. The solution assumes that the source of the energy shock is a resilient layer in which the sum of the gravitational stresses, resulting from natural disturbances and those induced by the conducted or planned mining exploitation, is estimated. The proposed solution assumes a spherical model for the tremor source, for which seismic energy is forecasted as a function of the longwall advance and the elementary value of seismic energy destroying the excavation. Subsequently, the following are calculated for the forecast of the seismic energy of a shock with the defined location of its source: value of the coefficient l of dispersion/attenuation of seismic energy and the flux of seismic energy at predetermined distances r from the tremor source. The proposed solution for forecasting the seismic energy of tremors and the level of risk of damage to the excavation during the functioning of mining operations is helpful in the development of bump prevention. Changing the intensity of mining operations enables the level of the seismic energy induced by the operations both at the stage of its development and during the excavation of a seam using the longwall method to be “controlled”. The presented solution has been produced for an area disturbed by the mining of coal seam 510 in the hard coal mine, Jas-Mos. An original program developed by CMI was used for the calculations.
Źródło:: Journal of Sustainable Mining; 2017, 16, 1; 1-7
2300-1364
2300-3960
Pojawia się w:: Journal of Sustainable Mining
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Identification of safety hazards in Indian underground coal mines
Autorzy:: Tripathy, D. P.
Ala, C. K.
Powiązania:: https://bibliotekanauki.pl/articles/92126.pdf
Data publikacji:: 2018
Wydawca:: Główny Instytut Górnictwa
Tematy:: underground coal mining
hazard identification
risk assessment
safety control
accident analysis
górnictwo podziemne
identyfikacja zagrożenia
ocena ryzyka
kontrola bezpieczeństwa
analiza wypadków
Opis:: To improve safety the application of effective risk management has become a requirement in the mining industry. The effectiveness of mining risk management essentially depends on the risk assessment process, as the output of the risk assessment process helps the mine management to decide upon the control measures to be employed to mitigate the risks identified in the mine. The application of risk assessment in mines has become important not only for ensuring a safe working environment but, also, it is now a legal requirement. The capability of a risk assessment process depends on the hazard identification phase, as unidentified hazards may lead to unknown and unmanageable risks. Therefore, it is essential to identify all the potential hazards to manage the risks in mines. The object of this study is to identify the safety hazards present in Indian underground coal mines and to build a preliminary database of the identified hazards. Accident data collected from the Directorate General of Mines Safety in India and a public sector coal mining company was studied to identify safety hazards that may probably lead to accidents. The database could help the mine management to improve decision making after analysing and evaluating the safety risks of identified hazards.
Źródło:: Journal of Sustainable Mining; 2018, 17, 4; 175-183
2300-1364
2300-3960
Pojawia się w:: Journal of Sustainable Mining
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Gravity field changes during deep exploitation of the coal longwall and their relation to stress distribution and seismic activity
Autorzy:: Kortas, Łukasz
Powiązania:: https://bibliotekanauki.pl/articles/2073908.pdf
Data publikacji:: 2021
Wydawca:: Główny Instytut Górnictwa
Tematy:: gravity
mining
coal
seismicity
tremors
grawitacja
górnictwo
węgiel
sejsmiczność
aktywność sejsmiczna
wstrząsy
Opis:: Mining operations cause volumetric deformations within the rock mass and changes in its density, to which the gravimetric method is sensitive. These changes are particularly well seen in periodic measurements of the local gravity field. The paper analyses the relationship between the movement of a longwall in a coal seam and the change in the distribution of the gravity field in time and space observed on the ground surface. Relative gravimetric measurements were carried out in six series between 2018 and 2020; before the start of coal extraction, with the progress of the longwall and after the cessation of mining. Collected data allowed differential maps of changes in gravity to be plotted. Differential anomalies between the subsequent measurement series, and the reference one were then analysed. The distribution and temporal variations of the anomalies suggest a relationship between changes in density distribution of the rock medium in the longwall overburden, and the change in the stress state in the rock mass caused by the passage of the longwall front. An attempt was made to relate the variability of the state of stresses in the longwall overburden to the intensity of seismic tremors with energy > 10-4 J accompanying longwall exploitation.
Źródło:: Journal of Sustainable Mining; 2021, 20, 4; 228--239
2300-1364
2300-3960
Pojawia się w:: Journal of Sustainable Mining
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Analysis of the application of methane-bearing capacity test methods in the conditions of Polish mining
Autorzy:: Karbownik, Marcin
Powiązania:: https://bibliotekanauki.pl/articles/2201419.pdf
Data publikacji:: 2022
Wydawca:: Główny Instytut Górnictwa
Tematy:: hard coal
methane hazard
methane-bearing capacity
mining
węgiel kamienny
zagrożenie metanowe
metanowość
górnictwo
Opis:: The methane hazard is one of the natural hazards occurring in hard coal mining. The content of natural methane in hard coal seams, the so-called methane-bearing capacity, is one of the key parameters that allow for proper assessment of the methane hazard and the state of the threat of gas and rock outbursts. For safety purposes, there is a constant need to improve the methods for the determination of this parameter. In the conditions of Polish mining, the method used for methane-bearing capacity determination is the direct drill cuttings method. This paper contains a comparative study presenting three different methods of methane-bearing capacity determination. Tests were conducted using two direct methods (the drill cuttings method and the United States Bureau of Mines (USBM) method), and the indirect method based on the desorption intensity index. On the basis of the obtained test results, it was found that the results obtained with the USBM method were slightly higher than those obtained with the direct drill cuttings method. Gas losses, an important element affecting the final value of the assay, were also analysed. This comparative study will evaluate the validity and applicability of the above methods under specific conditions in hard coal mining.
Źródło:: Journal of Sustainable Mining; 2022, 21, 4; 309--318
2300-1364
2300-3960
Pojawia się w:: Journal of Sustainable Mining
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Upper Silesian Geophysical Observation System - a unit of the EPOS project
Autorzy:: Mutke, Grzegorz
Kotyrba, Andrzej
Lurka, Adam
Olszewska, Dorota
Dykowski, Przemysław
Borkowski, Andrzej
Araszkiewicz, Andrzej
Barański, Adam
Powiązania:: https://bibliotekanauki.pl/articles/1839002.pdf
Data publikacji:: 2019
Wydawca:: Główny Instytut Górnictwa
Tematy:: coal basin
mining
geodynamics
geophysics
monitoring systems
zagłębie węglowe
górnictwo
geodynamika
geofizyka
systemy monitoringu
Opis:: The aim of the paper is to present the structure and research potential of the newly created measurement and information system for observing dynamic phenomena occurring in the Earth's crust in the Upper Silesian Coal Basin (USCB) in Poland as a result of mining activities. The structure of the system is similar to the one developed for monitoring the movements of the European tectonic plate under the European Plate Observation System (EPOS) programme. The measurement part of the system consists of stationary devices and sensors working in monitoring mode, installed in various locations of the USCB, both on the surface and underground, as well as data sets from periodically performed measurements using land, air and satellite techniques. The IT part of the system will create a local data centre with specialized and dedicated processing and modelling software in which all measurement data will be archived and processed to a form which enables the analysis of the short and long-term impact of mining operations on the environment. As one of the elements of the system will be observations of the short and long-term gravity and morphology changes, the collected data will enable research in the field of the geodynamics of mining areas to be conducted.
Źródło:: Journal of Sustainable Mining; 2019, 18, 4; 198-207
2300-1364
2300-3960
Pojawia się w:: Journal of Sustainable Mining
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Alternative methodology to determine effective coefficient of methane diffusion in coal
Autorzy:: Koptoń, Henryk
Powiązania:: https://bibliotekanauki.pl/articles/1839042.pdf
Data publikacji:: 2020
Wydawca:: Główny Instytut Górnictwa
Tematy:: mining
coal
sorption
diffusion
methane
diffusion coefficient
górnictwo
węgiel
sorpcja
dyfuzja
metan
współczynnik dyfuzji
Opis:: The article presents the results of research in to the development of an alternative method of determining the effective coefficient of methane diffusion in coal, based on a mathematical model following Fick's second law. The research was conducted based on the recorded courses of methane sorption kinetics in coal samples obtained in laboratory conditions with the precise gravimetric sorption system IGA-001. The value of the coefficient was treated as an element tuning the model in such a way that the average relative error of the ex post was as small as possible. Model verification indicated the correctness of its assumptions. The development of a more accurate methodology to determine the effective coefficient of methane diffusion in coal will enable the verification of the models applied in order to describe the physical and chemical mechanisms of the methane desorption natural phenomenon. It will also pave the way for further research aimed at the determination of: the gas bearing capacity of coal seams, the degree of degassing of seamswhich results from the mining operations being conducted; or to what extent it is possible to degas the deposits.
Źródło:: Journal of Sustainable Mining; 2020, 19, 2; 88-95
2300-1364
2300-3960
Pojawia się w:: Journal of Sustainable Mining
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Determination of the technological parameters of borehole underground coal gasification for thin coal seams
Autorzy:: Falshtynskyi, V.S.
Dychkovskyi, R.O.
Lozynskyi, V.G.
Saik, P.B.
Powiązania:: https://bibliotekanauki.pl/articles/92067.pdf
Data publikacji:: 2013
Wydawca:: Główny Instytut Górnictwa
Tematy:: borehole mining
coal gasification
in situ gasification
rock mass
combustion
chemical balance
górnictwo otworowe
zgazowanie węgla
gazyfikacja in situ
górotwór
spalanie
równowaga chemiczna
Opis:: In this article the characteristics of the criteria of borehole underground coal gasification for thin coal seams are defined. The thermal and material balance calculations for coal seam gasification processes are also explained. The construction, method of in situ gasifier preparation, and the sequence of coal seam gasification for area No 1 (located in the field of Solenovsk coal deposits) are also described. The parameters of borehole underground coal gasification for the Solenovsk coal mine on the model of rock and coal massif are detailed too. The method of in situ gasifier preparation, and the sequence of coal seam gasification during a standard installation are also described in detail. Interpretations based on the conducted research and investigation are also presented.
Źródło:: Journal of Sustainable Mining; 2013, 12, 3; 8-16
2300-1364
2300-3960
Pojawia się w:: Journal of Sustainable Mining
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Seismic activity and flooding of hard coal mines in the Ostrava-Karvina Coalfield
Autorzy:: Konicek, Petr
Jirankova, Eva
Kajzar, Vlastimil
Schreiber, Jan
Malucha, Pavel
Schuchova, Kristyna
Powiązania:: https://bibliotekanauki.pl/articles/2201417.pdf
Data publikacji:: 2022
Wydawca:: Główny Instytut Górnictwa
Tematy:: flooding of mines
post-mining seismicity
coal mines
water level
ground surface movement
zalewanie kopalni
sejsmiczność pogórnicza
kopalnie węgla kamiennego
poziom wody
ruch powierzchni ziemi
Opis:: The termination of mining activities often results in post-mining problems and risks. One of these issues is the flooding of mines. Long-term mining in the Ostrava and Petrvald sub-basins in the Upper Silesian Coal Basin finished in 1994. Tens of coal seams were mined here, and the depth of mining reached more than 1000 m below the surface. Flooding of the Ostrava sub-basin started in 1994. The Ostrava and Petrvald sub-basins were flooded from one half only to prevent water from flooding into the Karvina sub-basin, where mining continued. The continual pumping of water has been carried out ever since. Only low-energy seismic events (up to 103 J) were recorded during the periods of flooding and water pumping. Only one high-energy seismic event was recorded here (108 J, magnitude of 3.5, 12 December 2017). This study presents the natural and mining conditions regarding the process of mine flooding; and the induced seismicity registered during the flooding of mines and the preservation of water at the stated level. Analysis of the flooding of mines in connection to the registered seismicity is presented. Probable reasons for the low seismic activity during the flooding of mines are also discussed.
Źródło:: Journal of Sustainable Mining; 2022, 21, 4; 249--260
2300-1364
2300-3960
Pojawia się w:: Journal of Sustainable Mining
Dostawca treści:: Biblioteka Nauki

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