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Tytuł:
Multisource model of ship electric field
Autorzy:
Jakubiuk, K.
Zimny, P.
Wołoszyn, M.
Powiązania:
https://bibliotekanauki.pl/articles/97439.pdf
Data publikacji:
2011
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
magnetic field of the ship
mine protection
BEM
Opis:
A steel-hulled ship in sea water produces an electric field around itself. The source of this field are electrochemical processes and ship’s cathodic protection. The analysis of the electric field around the ship is important by the reason of the ship’s identification and counter-mine protection. The paper presents a simplified model of the ship’s multisource electric field, which allows to calculate the electric field distribution in the so-called distant zone around the ship in an approximate way using a PC, during time lasting from few up to several dozen of minutes.
Źródło:
Computer Applications in Electrical Engineering; 2011, 9; 78-84
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identyfikacja deformacji nieciągłych na podstawie pomiarów geodezyjnych terenu górniczego
The identification of discontinuous deformations based on geodetic surveys of the mining area
Autorzy:
Stoch, Tomasz
Sopata, Paweł
Mrocheń, Dawid
Wójcik, Artur
Powiązania:
https://bibliotekanauki.pl/articles/45444269.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Górnictwa
Tematy:
deformacja nieciągła
pomiary deformacji
ochrona terenów górniczych
discontinuous deformation
deformation measurements
mine area protection
Opis:
Skutki podziemnej eksploatacji górniczej mogą ujawniać się na powierzchni terenu w postaci deformacji ciągłych i/lub nieciągłych. Występujące rzadziej deformacje nieciągłe charakteryzują się większą skalą zagrożenia dla obiektów budowlanych oraz infrastruktury powierzchniowej. Występowanie tego typu deformacji praktycznie dyskwalifikuje teren z możliwości zabudowy. Natomiast dla istniejących obiektów może prowadzić do uszkodzeń i zniszczeń uniemożliwiających bezpieczne użytkowanie tych obiektów. W artykule przedstawiono wyniki obserwacji liniowej deformacji nieciągłej, która ujawniła się na powierzchni w postaci progu terenowego oraz garbu o długości kilkuset metrów. W badaniach wykorzystano satelitarne i klasyczne metody pomiarowe. Technika GNSS w trybie RTK umożliwiła pomiar współrzędnych przestrzennych kilku tysięcy punktów na powierzchni terenu w regularnej siatce. Równolegle prowadzono precyzyjne pomiary wysokościowe (niwelacja geometryczna) wykonywane na trwale stabilizowanych punktach linii obserwacyjnej. Profil wzdłuż linii obserwacyjnej przecinał prostopadle próg terenowy. Pomiary zrealizowano w kilku seriach przez ponad półtora roku nad czynną eksploatacją górniczą. Objęto nimi obszar o powierzchni ponad 50 ha. Opracowanie i analiza wyników pomiarów umożliwiły wygenerowanie przestrzennego pola deformacji. Dodatkowo rozwój deformacji w czasie przedstawiono na pionowych profilach terenu wzdłuż linii pomiarowej. Przyczyny wystąpienia deformacji nieciągłej wywołanej eksploatacją górniczą powinny wyjaśnić wyniki badań struktury gruntu oparte o wdrożone metody geofizyczne.
The effects of underground mining exploitation may manifest themselves on the ground surface in the form of continuous and/or discontinuous deformations. The less frequent discontinuous deformations are characterised by a greater scale of danger to buildings and surface infrastructure. The presence of this type of deformation practically disqualifies the area from development. For existing facilities, on the other hand, it may lead to damage and destruction preventing the safe use of these facilities. The paper presents a study of linear discontinuous deformation that revealed itself on the surface in the form of a terrain sill and a hump several hundred meters long. Satellite and classical measurement methods were used in the study. GNSS technology in RTK mode made it possible to measure the spatial coordinates of several thousand points on the ground surface in a regular network. In parallel, precise height measurements (geometric level) based on permanently stabilised observation line points were carried out. The profile along the observation line crossed the terrain sill perpendicularly. The measurements were carried out in several series over a period of more than a year and a half over an active mining exploitation. An area of over 50 ha was covered. The processing and analysis of the measurement results made it possible to generate a spatial deformation field. In addition, the development of deformation over time is shown on vertical profiles of the terrain along the survey line. The reasons for the occurrence of discontinuous deformation caused by mining exploitation should be explained by the results of soil structure research based on implemented geophysical methods.
Źródło:
Przegląd Górniczy; 2022, 78, 1; 3-8
0033-216X
Pojawia się w:
Przegląd Górniczy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ochrona przeciwminowa załogi pojazdów specjanych
Protection of the occupants in the military vehicles
Autorzy:
Krzystała, E
Powiązania:
https://bibliotekanauki.pl/articles/99067.pdf
Data publikacji:
2010
Wydawca:
Politechnika Śląska. Katedra Biomechatroniki
Tematy:
ochrona przeciwminowa
pojazd specjalny
fala uderzeniowa
pojazd opancerzony
badanie eksperymentalne
badanie numeryczne
mine protection
special vehicle
shock wave
armored vehicle
experimental study
numerical study
Opis:
W artykule zaprezentowano wprowadzenie do zagadnienia ochrony przeciwminowej załogi w pojazdach specjalnych. Scharakteryzowano zagrożenia wynikające z oddziaływania fali uderzeniowej wybuchu na załogę pojazdów opancerzonych, przedstawiono tendencje rozwojowe w szczególności wewnętrznych środków ochrony przeciwminowej oraz przedstawiono założenia do dalszych badań eksperymentalno - numerycznych.
In the article an introduction to the issue of the protection of the occupants in the military vehicle is presented. Threat of the occupants which is caused by the shock wave of mine blast, developmental tendency, especially of the internal mine protection devices and assumption to the next experimental - numerical researches are presented as well.
Źródło:
Aktualne Problemy Biomechaniki; 2010, 4; 289-294
1898-763X
Pojawia się w:
Aktualne Problemy Biomechaniki
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement of short-lived radon daughters in Polish mines
Monitorowanie zagrożeń ze strony krótkożyciowych produktów rozpadu radonu w kopalniach
Autorzy:
Skubacz, K.
Mielnikow, A.
Powiązania:
https://bibliotekanauki.pl/articles/340811.pdf
Data publikacji:
2004
Wydawca:
Główny Instytut Górnictwa
Tematy:
ochrona radiologiczna w kopalni
dopuszczalna dawka promieniowania
detektor termoluminescencyjny
produkty rozpadu radonu
radiological protection in mine
permissible radiation dose
thermoluminescent detector
radon daughters
Źródło:
Prace Naukowe GIG. Górnictwo i Środowisko / Główny Instytut Górnictwa; 2004, 1; 123-123
1643-7608
Pojawia się w:
Prace Naukowe GIG. Górnictwo i Środowisko / Główny Instytut Górnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Uwarunkowania historyczne i prawno–organizacyjne górniczo–konserwatorskiego zabezpieczania zabytkowych wyrobisk Kopalni Bocheńskiej
Historical, legal and organisational determinants of mining and conservation protection of historical pits in the Bochnia Salt Mine
Autorzy:
Charkot, Józef
Powiązania:
https://bibliotekanauki.pl/articles/487332.pdf
Data publikacji:
2016
Wydawca:
Muzeum Żup Krakowskich Wieliczka
Tematy:
uwarunkowania historyczne
organizacja
zabezpieczania
zabytkowe
wyrobiska
kopalnia
Bochnia
Historical legal
mine
conservation
protection
historical pits
Salt Mine
Opis:
The objective of this article is to present hitherto accomplishments in the area of protection of the mine understood as a monument in a legal sense. They are presented in reference to securing activities in the mine, effected throughout the history of its functioning. These issues have not been presented in a  synthetic manner so far. The basic source material for the study was information accumulated in the course of documentation work conducted by the employees of the Cracow Saltworks Museum Wieliczka (in cooperation with engineers and technical employees from the Bochnia Salt Mine) underground. The manner of presentation of issues discussed in the study derives from an analogous article pertaining to the Wieliczka Salt Mine, presented in volume XXIII of this yearbook. The necessity of securing the mining pits in the Bochnia Salt Mine has been apparent since the very beginning of its commercial operation. Various solutions were applied, frequently quite untypical, adjusted to the specific geological structure of the deposit. The basic material was wood, used to line the rising headings, as well as drifts in the weak rock mass. Extensive chambers were propped up with support columns, usually filled with mining spoil and contaminated salt types. The specific nature of the Bochnia Salt Mine was that the support columns were constructed of thin alder and birch trunks. Support columns made of thick pine, spruce or fir wood were rarely used. Some of the selected areas were liquidated by being completely filled with waste rocks and post-production waste. Smaller of them, left without any means of protection, were completely clamped after several centuries. The original form of securing the chambers from the progressing destruction was leaving them at the edge of a thin salt shell. Until the 18th century, transport routes were designated in some of them via lining or support columns, which connected exploitation areas located on various depths. Conservation work in the legal sense began only after inclusion of the mine in the list of monuments in 1981, even though some of the projects undertaken earlier had this objective in mind, especially in the underground chapels. Mining and conservation work is performed in a zone included under protection, i.e. on levels from I to IX, in most valuable mining pits, selected on the basis of substantive criteria with respect to the values of the mining pits. The selection was made by the employees of the Cracow Saltworks Museum Wieliczka on the basis of materials accumulated during the systematic scientific and technical stock-taking conducted in the 1970s and 1980s; the list was approved by the Małopolska Province Monument Conservator in Kraków. It includes 65 chambers, 112 drifts, 3 shafts and 4 fore-shafts. Furthermore, the most valuable regions of the mine with respect to natural assets were encompassed by a detailed stocktaking in 2005 and subjected to additional legal protection on the basis of the Nature Conservation Act in the form of 27 documentation sites. The conservation authorities have also formulated guidelines pertaining to the procedure of preparing and performing work in the historical pits. The starting point is preparation of a historical and conservation study and subsequently a technical design relying on its recommendations. On this basis, permits are issued for the conduct of work in protected shafts, chambers and drifts. Direct supervision over the performance of work until 1999 was the obligation of the Province Monument Conservator in Tarnów, and later the Małopolska Province Monument Conservator in Kraków and, since 2016, the Cracow Saltworks Museum Wieliczka. The basic source of financing for the conservation projects are funds deriving from the state budget, which may be formally assigned for such a purpose since 2000. Earlier (since 1991) they were fully assigned to liquidation work. As of 2000, funds assigned for specific projects from the National Environmental Protection and Water Management Fund constitute a significant supplement for the financing. Relatively small funds are also generated by the tourist and spa activities pursued since 1995. The majority of mining and conservation work was performed by the mining team of the Bochnia Salt Mine. Tasks calling for specialist equipment and special qualifications of employees were commissioned from external companies. The basic part of the work was concentrated on levels from I to IV, in mining pits that are the most valuable with respect to the presented historical values. The speed of work gained momentum after the mine was classified as the monument of history (2000). Initially, the work focused on securing pits that are assigned for being made available to tourists on level IV, i.e. the August Chamber, and on level VI: the Sienkiewicz Chamber and the Dobosz Inter-level. As a result of them, in 1995 the conditions in the mine allowed for admission of organised groups to the mine for the first time in history. Later, work was conducted in drifts and chambers assigned for thematically oriented exhibitions. In the first period, the greatest mining and conservation projects included securing the central part of the August Drift, along with adjoining corridors and the extensive Ważyn Chamber. Its adjustment to perform recreational and sanatorium-type functions required a lot of effort. In the second stage, work performed in the complex of mining pits called Zejście Kalwaria, spreading from level I Danielowiec to level IV August, was of great importance, as well as work at eleven sections of Regis Stairs connecting these levels. It is also necessary to mention professional conservation of the 18th century Passionis Chamber and opening the 17th century Krucyfiks Chamber for tourists. Performance of mining and conservation work has acquired a special rank and should be an absolute priority after inclusion of the Salt Mine in the UNESCO World Heritage List in 2013.
Źródło:
Studia i Materiały do Dziejów Żup Solnych w Polsce; 2016, 31; 119-150
0137-530X
Pojawia się w:
Studia i Materiały do Dziejów Żup Solnych w Polsce
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zagospodarowanie terenu odkrywkowej kopalni żwiru w Radłowie
Development plan of the opencast gravel mine area in Radłów
Autorzy:
Sobczyk, W.
Grzebinoga, K.
Powiązania:
https://bibliotekanauki.pl/articles/319300.pdf
Data publikacji:
2018
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
rekultywacja
kopalnia
zagospodarowanie przestrzenne
ochrona środowiska
reclamation
mine
spatial planning
environmental protection
Opis:
W artykule scharakteryzowano sposób zagospodarowania terenu odkrywkowej kopalni żwiru w Radłowie poprzez stworzenie przestrzeni spójnej, estetycznej i funkcjonalnej. Obecnie teren użytkowany jest spontanicznie jako miejsce rekreacyjne. Wskazano podstawy prawne, obowiązujące w polskim prawodawstwie, regulujące proces rekultywacji i zagospodarowania gruntów zdegradowanych przez górnictwo. Przedstawiono możliwe kierunki rekultywacji i czynniki decydujące o ich wyborze. Celem artykułu było stworzenie koncepcji zagospodarowania terenów wokół zbiorników pożwirowych, tak aby odpowiadały zapotrzebowaniu społeczeństwa. Opracowano autorski projekt zagospodarowania terenów powstałych w wyniku zakończenia eksploatacji w odkrywkowej kopalni żwiru „Radłów B”. Scharakteryzowano obiekt pod względem już istniejącej infrastruktury, dostępności komunikacyjnej oraz atutów, jakie posiada zbiornik. W projekcie zagospodarowania terenu pogórniczego na przykładzie czynnej kopalni Radłów zaproponowano następujące rozwiązania: połączenie zbiorników poeksploatacyjnych - wyznaczenie nowej linii brzegowej, ciąg pieszo-rowerowy, strefa rekreacyjna kąpieliskowo-plażowa, strefa rekreacyjno-sportowa, strefa wędkowania, baza żeglarska, pomost widokowy, park sprawnościowy, pole namiotowe.
The article describes the method of developing the area of an opencast gravel mine in Radłów by creating a coherent, aesthetic and functional space. Currently, the area is used spontaneously as a recreational place. The legal base in force in Polish legislation, regulating the process of land reclamation and management degraded by mining, has been indicated. Possible reclamation modes and factors determining their selection are presented. The purpose of the article was to create a concept for the development of areas around gravel reservoirs to suit the society’s needs. An original project for the development of land created as a result of the end of exploitation in the opencast gravel mine „Radłów B” was elaborated. The facility has been characterized in terms of already existing infrastructure, transport accessibility and the advantages of the reservoir. In the post-mining area development project based on the example of the active Radłów mine, the following solutions were proposed: a combination of post-mining pit lakes - design of a new shoreline, pedestrian and bicycle routes, recreational swimming and beach zones, recreation and sport zones, fishing zone, nautical base, viewing platform, fitness park, campsite.
Źródło:
Inżynieria Mineralna; 2018, R. 20, nr 2, 2; 169-176
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Underground mine gas explosion accidents and prevention techniques – an overview
Autorzy:
Song, Wanting
Cheng, Jianwei
Wang, Wenhe
Qin, Yi
Wang, Zui
Borowski, Marek
Wang, Yue
Tukkaraja, Purushotham
Powiązania:
https://bibliotekanauki.pl/articles/1853866.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
kopalnia węgla
zabezpieczenie przeciwwybuchowe
bezpieczeństwo kopalni
coal mine explosion
explosion protection
control
overview
Opis:
Mine gas explosions present a serious safety threat in the worldwide coal mining industry. It has been considered the No.1 killer for underground coal mining workers. The formation of an explosive atmosphere involves various factors. Due to complicated stratified geology and the coal production process, geological conditions and coal production process reasons and particular working sections underground present a high risk of an explosion that would most likely cause casualties and property loss. In this study, the basic conditions, propagation law and hazards analysis of gas explosions are reviewed, followed by a review of the typical locations where an explosion would occur. Finally, current technologies used in the mining industry for preventing gas explosions and suppressing the associated dangers were studied. Preventive gas explosion technologies mainly include gas drainage, gas accumulation prevention and gas and fire source monitoring technologies. The technologies often used to control or mitigate gas explosion hazards are usually divided into active and passive, and the advantages and disadvantages of each method are discussed and compared. This paper aims to summarise the latest technologies for controlling and suppressing gas explosion and guides mining engineers to design risk mitigation strategies.
Źródło:
Archives of Mining Sciences; 2021, 66, 2; 297-312
0860-7001
Pojawia się w:
Archives of Mining Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of noise sources and selection of ear protector in a coal mine
Autorzy:
Erol, Ilknur
Su, Okan
Powiązania:
https://bibliotekanauki.pl/articles/2203335.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
kopalnia węgla
hałas
dozymetr
coal mine
noise
sound meter
dosimeter
hearing protection device
Opis:
In this study, the noise sources to which a coal miner, who works at the Kurul panel of Kilimli Colliery, Zonguldak, was exposed were investigated. These sources were positioned at different points from the surface to the workface. Noise levels were measured according to the working periods of the coal miners around the machines. The results were evaluated under the Turkish Noise Regulation. The critical exposure times in which the coal miners could work without the use of personal protective equipment were examined according to the noise values to which they were exposed. In addition, the personal noise exposure values of the machine operators (boring machine, electro-hydraulic drill, and pick hammer) were determined during the development works. Two different types of noise measurements, with a microphone at the ear level and inside the ear protector, were conducted. The results obtained when the microphone of the personal dosimeter was at ear level, were found to be 15 dBA higher than those when the microphone was inside the ear protector. As a result, the selection methods of ear protectors were analyzed. Recommendations were given for those working on the risky tasks at the panel.
Źródło:
Archives of Mining Sciences; 2022, 67, 3; 455--476
0860-7001
Pojawia się w:
Archives of Mining Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Research on Electric Leakage Protection to Improve Electrical Safety in Underground Mining in Vietnam
Autorzy:
Nguyen, Truong Giang
Nguyen, Thac Khanh
Ngo, Xuan Cuong
Do, Nhu Y.
Powiązania:
https://bibliotekanauki.pl/articles/27323271.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Przeróbki Kopalin
Tematy:
electrical safety
conversion devices
mine power network
leakage protection
bezpieczeństwo elektryczne
ochrona
kopalnie
Opis:
To ensure safety in underground mining, it is imperative to equip yourself with electric leakage protection. Today, underground mines are gaining a high degree of mechanization and using more power electronics to enhance the operation and organization of power supplies, including the application of power electronics for DC power transmission in mining. i.e., separate the rectifier (AC-DC) from the inverter (DC-AC) with a long DC cable. The transmission of DC power changes the structure of the mine power network; then there will appear a power network with an industrial frequency of 50 Hz, a DC power network, and a power network after the variable frequency inverter. Due to the mutual interaction between DC power networks and AC power networks, leakage protection devices are unreliable, causing unsafe conditions in mining. The content of the article is to determine the leakage current in the power network when using converters in DC power transmission in mining. The research results are the basis for calculating and selecting leakage protection equipment for the purpose of improving safety in underground mining in Vietnam.
Źródło:
Inżynieria Mineralna; 2023, 2; 209--214
1640-4920
Pojawia się w:
Inżynieria Mineralna
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reduction of Saline Waters Discharge from Coal Mines Through Filling and Sealing of Underground Voids
Autorzy:
Strozik, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/1179625.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
environment protection
filling of underground voids
fly ash water mixtures
mine waters management
protection of watercourses
salinized waters discharge
Opis:
Drainage and discharge of mine waters belong to main environmental issues that must be appropriately addressed by underground coal mining industry. Large area of mine fields in Upper Silesia Coal Basin (USCB), which belong both to currently active and already closed mine, together with the geological and hydrogeological structure of the rock mass in USCB, create conditions requiring drainage and discharge of about 118 million m3/yr of mine waters of differentiated salinization. Increasing average depth of mining works and necessity of drainage of numerous closed mines results in increasing amounts of chlorides and sulphates being introduced into water environments, even then coal production of Polish mining industry is decreasing. Majority of mines waters are discharging directly to watercourses and the only significant environmental protection measure is control of the concentration of salt in main rivers. Balance of mine waters and Clˉ + SO42- ions demonstrates weight of this issue and give a background, on which technology of filling of underground voids has been discussed as a method, which, under several conditions, may reduce the discharge of brines and highly salinized mine waters (mineralisation above 42 g/dm3) by about 30%. Although technology of filling of voids with mixtures of water and finely grained solids (mostly fly ash) is well known and adopted by most of coal mines, its potential in reduction of saline waters discharge is being wasting due to inconsequence in its use and underestimating its value in terms of saline waters management. Influence of waters salinity on the physical properties of the fill, as well as benefits gained by the coal mines as result of filling of voids, show that this operations should be conducted in the possibly largest extent, limited only by availability of fly ash and volume of voids, being created as result of coal extraction.
Źródło:
World Scientific News; 2017, 72; 10-25
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reduction of Saline Waters Discharge from Coal Mines Through Filling and Sealing of Underground Voids
Autorzy:
Strozik, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/1181185.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
environment protection
filling of underground voids
fly ash water mixtures
mine waters management
protection of watercourses
salinized waters discharge
Opis:
Drainage and discharge of mine waters belong to main environmental issues that must be appropriately addressed by underground coal mining industry. Large area of mine fields in Upper Silesia Coal Basin (USCB), which belong both to currently active and already closed mine, together with the geological and hydrogeological structure of the rock mass in USCB, create conditions requiring drainage and discharge of about 118 million m3/yr of mine waters of differentiated salinization. Increasing average depth of mining works and necessity of drainage of numerous closed mines results in increasing amounts of chlorides and sulphates being introduced into water environments, even then coal production of Polish mining industry is decreasing. Majority of mines waters are discharging directly to watercourses and the only significant environmental protection measure is control of the concentration of salt in main rivers. Balance of mine waters and Clˉ + SO42ˉ ions demonstrates weight of this issue and give a background, on which technology of filling of underground voids has been discussed as a method, which, under several conditions, may reduce the discharge of brines and highly salinized mine waters (mineralisation above 42 g/dm3) by about 30%. Although technology of filling of voids with mixtures of water and finely grained solids (mostly fly ash) is well known and adopted by most of coal mines, its potential in reduction of saline waters discharge is being wasting due to inconsequence in its use and underestimating its value in terms of saline waters management. Influence of waters salinity on the physical properties of the fill, as well as benefits gained by the coal mines as result of filling of voids, show that this operations should be conducted in the possibly largest extent, limited only by availability of fly ash and volume of voids, being created as result of coal extraction.
Źródło:
World Scientific News; 2017, 72; 498-512
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The possibility of using waste materials as raw materials for the production of geopolymers
Autorzy:
Figiela, Beata
Korniejenko, Kinga
Powiązania:
https://bibliotekanauki.pl/articles/1430020.pdf
Data publikacji:
2020
Wydawca:
Centrum Badań i Innowacji Pro-Akademia
Tematy:
geopolymer
mining waste
environmental protection
mine tailings
geopolimer
odpady wydobywcze
ochrona środowiska
odpady kopalniane
Opis:
This article shows the possibility of using industrial and mining waste for creating new eco-friendly materials – geopolymers. The main objective of the article is to analyze the possibilities of using new composite received from waste materials from mining industry in practical applications, especially in construction industry. The article presents benefits and potential threats for using wastes for production of geopolymers from gangue, waste from iron processing, waste from copper mining and processing, waste from chromium processing and so-called red mud from aluminum production. Research methods applied in the article are: critical analysis of literature sources, including comparison new material with other materials used in similar applications.
Źródło:
Acta Innovations; 2020, 36; 48-56
2300-5599
Pojawia się w:
Acta Innovations
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Badania produktów gazowych powstających przy rozwoju źródeł pożarów przenośników taśmowych
Testing gas products originating from fire sources of belt conveyors
Autorzy:
Szczygielska, M.
Mróz, J.
Małachowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/187458.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technik Innowacyjnych EMAG
Tematy:
ochrona przeciwpożarowa
przenośnik taśmowy
zagrożenie pożarowe w kopalni
belt conveyor
fire protection
mine fire hazards
Opis:
W artykule scharakteryzowano główne przyczyny powstawania zagrożenia pożarowego przenośników taśmowych stosowanych w górnictwie podziemnym. Zaprezentowane zostały wyniki badań laboratoryjnych produktów rozkładu termicznego taśm przenośnikowych. Wnioski z przeprowadzonych badań są podstawą do dalszych prac nad wielo-detektorowym czujnikiem służącym do wczesnego wykrywania pożarów przenośników.
The article describes main causes of fire hazards for belt conveyors used in underground mining. The authors presented the results of laboratory tests of thermal degradation products of belt conveyors. The conclusions are the basis for further research on a multi-detector sensor used for early detection of belt conveyors fires.
Źródło:
Mechanizacja i Automatyzacja Górnictwa; 2010, R. 48, nr 9, 9; 10-16
0208-7448
Pojawia się w:
Mechanizacja i Automatyzacja Górnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Proposed design fire scenarios for underground hard rock mines
Autorzy:
Hansen, Rickard
Powiązania:
https://bibliotekanauki.pl/articles/2201420.pdf
Data publikacji:
2022
Wydawca:
Główny Instytut Górnictwa
Tematy:
design fire
vehicle fire
underground mine
fire behaviour
fire protection
mine ventilation
pożar obliczeniowy
pożar pojazdu
kopalnia podziemna
reakcja na ogień
ochrona przeciwpożarowa
wentylacja kopalni
Opis:
Given the complexity and uniqueness of underground hard rock mines, the application of the design fire scenario approach is recommended when evaluating fire safety in mines. Providing a full set of design fire scenarios – ensuring that several important life safety aspects are covered – for a mine can be challenging. The question is whether a catalogue of potential clusters of design fire scenarios could be developed, covering important aspects found underground? Given the general lack of research into design fires in the mining industry, this paper provides a unique analysis of design fire scenarios in underground hard rock mines. Taking advantage of several different and diverse data sources, a comprehensive analysis with holistic character is provided where several proposed clusters of design fire scenarios and analyses of what criteria to apply when evaluating the scenarios are presented. The analysis of suitable criteria highlights the toxicity of the emitted smoke and decrease in visibility as potential criteria underground. The proposed scenarios focus on influencing parameters such as the fire behaviour, position of fire, fire load, and smoke spread. The proposed clusters of design fire scenarios will provide a key tool when evaluating fire protection measures in an underground mine.
Źródło:
Journal of Sustainable Mining; 2022, 21, 4; 261--277
2300-1364
2300-3960
Pojawia się w:
Journal of Sustainable Mining
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Environmental impacts of an opencast mine
Autorzy:
Szabo, G.
Braun, M.
Koi, R.
Szabo, S.
Szegedi, S.
Powiązania:
https://bibliotekanauki.pl/articles/87443.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Geograficzne
Tematy:
landscape protection
opencast mine
settling dust
wind
land-use
analytical measures
cluster analysis
discriminant analysis
Hungary
Opis:
An opencast mine may cause negative effects in many ways. Landscape scarrings of opencast mines are harmful in aesthetic respect, engines, machineries and periodic blastings may cause notable noise loading which are injurious even if these mines are situated far from the settlements because the noise from the mines may disturb animals living in the surrounds (Kerényi, 1995, 2003, Barótfi, 2000). Besides the listed impacts the dust accompanied to the opencast mining cause the most significant load to the environment of these mines. In this study, the extent of dust loading is examined in the case of a North-Hungarian perlite mine. Milling of the exploited perlite is carried out in the milling plant located within the area of the mine in Pálháza which cause additional dust loading. Settling dust loading was studied by 22 measurement stations within a distance of 3 kilometres from the mine, during the installation of which even cover of the study area was aimed. Gathering of the dust samples were carried out monthly from August 2004 to July 2006 thus we have a two-year database. During the laboratory tests, the amount of insoluble and soluble dust fractions, altogether making up the total amount of settled dust, was determined respectively. In addition to the meteorological parameters having the most influence on the spatial distribution of the settling dust (i.e. wind velocity, wind directions and the amount of precipitation, air temperature, humidity and irradia-tion) that is why an automatic meteorological station was installed in the proximity of the mine, i.e. within the study area. It gave us the necessary meteorolo-gical data during the examination. Knowing that the most significant dust loading derives from the opencast mine we can not forget that periodically during the agricultural seasons from the arable lands and during the heating seasons through the chimneys additional dust might get into the dust-traps. To determine the origin of the dust in each dust-trap the dust samples were analytical examined as well. By the chemical composition of the samples we could find out how big roles the pollution sources outside the opencast mine played and hereby we could detect how significant the dust loading originated from the perlite mine is in its environment.
Źródło:
Prace Komisji Krajobrazu Kulturowego; 2008, 8; 113-126
1896-1460
2391-5293
Pojawia się w:
Prace Komisji Krajobrazu Kulturowego
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 29

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