Browsing by Subject "opencast mining"

Now showing 1 - 20 of 21

Access status: Open Access ,
20 lat kruszyw w polskiej gospodarce. Historia, teraźniejszość, przyszłość
(Wydawnictwa AGH, 2010) Kabziński, Aleksander Mikołaj
Without air, water and... aggregates there is no life and economic activity. The production of aggregates, cheap, common, available building material is the answer for the economy's demand, including the construction industry. The time from political and economical transformation of 1989 is the example of cyclical downfalls, stabilizations and growth periods, even with insufficient supply times. There is a proven dependence between GDP and the demand for aggregates. Nowadays, aggregates are both natural (including crushed and sand-gravel aggregates) and artificial, including those from recycling. The quantitative majority of the former does not allow to ignore the latter. During last 20 years the aggregate industry gathered different experiences. From the processes of ownership changes, through technical and technological changes, implementing European standards of aggregate quality to becoming a decent player in the European aggregate industry. The paper presents experiences, evaluations and prognosis the come out of the activity of industry's leading organization - Polish Association of Aggregates Producers Employers that is closely related with the representative group of producers with different quality and quantity of production, but also different capital structure and way of functioning. The prognosis about market demand and production capacity is presented together with threats that may become obstacles in fulfilling the industry's most important task: providing the growing economy with aggregates. The paper describes the experiences of other countries, both old and new members of European Union and Polish experiences that come out of our six- year presence in its structures.
Access status: Open Access ,
Analiza możliwości zastosowania koparek kompaktowych w polskich kopalniach węgla brunatnego
(Wydawnictwa AGH, 2011) Kasztelewicz, Zbigniew
The paper presents the technology of exploitation using compact bucket wheel excavators in lignite, clays or hard rocks like limestones. Advantages and disadvantages of these kinds of machines are discussed. A comparison of traditional BWEs used in Polish and foreign lignite mines with compact BWEs is conducted. Conclusions from this analysis allow to state that compact BWEs offer very advantageous mass to efficiency ratio and therefore allow to reduce investment costs in the mines using continuous exploitation systems.
Access status: Open Access ,
Analiza porównawcza efektywności pracy maszyn podstawowych w kopalniach węgla brunatnego - problemy z unifikacją wskaźników
(Wydawnictwa AGH, 2010) Kozioł, Wiesław; Ciepliński, Andrzej; Machniak, Łukasz
The following report presents problems concerning recording, the stock-taking of the archival data, calculation and comparing (benchmarking) the coefficients of efficiency of bucket wheel excavator in lignite mines. These problems were illustrated computational examples. The finding uniform procedure of accumulating and calculation coefficients of utilization of primary machine in lignite mines has the important influence on operations review and increase of efficiency technological arrangements.
Access status: Open Access ,
Analiza wyników produkcyjnych polskiej branży węgla brunatnego za lata 2005-2009 oraz przegląd obecnej sytuacji w górnictwie węgla brunatnego krajów Unii Europejskiej
(Wydawnictwa AGH, 2010) Żuk, Stanisław
The object of this paper is to present the achievements of lignite mining industry in Poland, on the basis of production data presented for the four operating mines in the last five years, compared to the production results achieved in 2009. The basic data concerning the operational performance in active areas of lignite mining is described. In the second part of the article an attempt was made to present the energy sector based on lignite against a background of whole Polish energy sector. Furthermore a comparison of the latter's current situation with lignite mining sector in EU and the role of lignite in Europe's energy system was conducted.
Access status: Open Access ,
Dziesięć postulatów branży węgla brunatnego w Polsce na tle aktualnych uwarunkowań
(Wydawnictwa AGH, 2009) Kasztelewicz, Zbigniew; Ptak, Miranda
The article introduces 10 most important postulates that can emerge during analysis of brown coal industry's position in Poland. The postulates concern different thematic layers. Particularly they refer to law regulations that should be - according to the authors - simplified. Furthermore, among the brought up postulates are the matters of deposit ownership and the status of brown coal as strategic mineral. The article is not lacking in difficult, disputable questions for which answers should be searched for in the currently developed energetic policy of the state and the conception of land use planning in Poland. Arrangements contained in these documents will determine the position and condition of brown coal industry in the following decades. So, according to the authors, it is even more crucial to take care of implementation of the »10 commandments« that serve the energetic safety based on Polish brown coal.
Access status: Open Access ,
Górnictwo odkrywkowe w Polsce oddziaływujące na obszary Natura 2000 w liczbach
(Wydawnictwa AGH, 2010) Ptak, Miranda
A new, more difficult time for opencast mining has started since Poland's accession to European Union on 1st May 2004. This concerns getting new concessions as well as continuing mining activity. Mining entrepreneurs have to take requirements concerning Nature 2000 areas protection into account apart from hitherto prevailing environmental requirements. In a brief form the paper presents the origin of this form of nature's protection, the development of the network in EU together with Poland's contribution and place in the establishment of these areas. Furthermore, documented mineral deposits lying in the Nature 2000 areas are identified with the division to particular minerals and quantities of deposits in particular voivodeships. The presented paper was created to depict the opencast mining's problem that comes out of the overlap of Nature 2000 areas and documented deposits existence. To see a chance of mining investments' development the industry has to face a new challenge - conducting operation in Nature 2000 areas. This will be one of the main themes of IX National Opencast Mining Congress.
Access status: Open Access ,
Lusatian lignite - modern, competitive and sustainable lignite mining
(2007) Ketzmer, Wolfgang
Since the beginning of the 1990s, comprehensive refurbishment and modernization measures of the opencast mine equipment have been carried out to increase and ensure competitiveness of the opencast mines of the Lusatian lignite mining area. The development of modern and competitive lignite mining required a comprehensive rehabilitation of plants and equipment of the raw coal transportation - the so-called 'Coal connecting railway system Lusatia'. Immission protection for the neighbourhood of opencast mines, recultivation and ambitious shaping and use of the post-mining landscape as well as socially-acceptable resettlements are challenges Vattenfall Europe Mining AG faces with regard to a sustainable lignite mining. In 2011 the importance of the energy region Lusatia will be further enhanced by the starting of the commercial operation of the Boxberg unit R with an installed capacity of 675 MW. The long-term development of the Lusatian lignite mining area has to be considered for a period of at least 40 years. Lusatia has an enormous potential with more than 12 billion tones of lignite. Vattenfall will concentrate on the application of the CO2-free power plant technology for the future use of run-of-mine lignite in modern, environmentally friendly and most of all competitive power plants.
Access status: Open Access ,
Mining status in Slovak Republic during the year 2008
(Wydawnictwa AGH, 2009) Rybár, Pavol
International Brown Coal Mining Congress in Bełchatów is an important discussion forum on the role of not only brown coal as a crucial energy material but also brown coal mining in Europe in general. The Slovak mining industry is one of the oldest in Europe. Slovakia possesses a significant number of documented raw materials deposits exploited by means of underground mines (4.3 million tons) and open pits (16.6 million tons). The scale of mining is adequate to the national economy needs. Open pits are mostly used to mine materials for the construction industry, whereas underground mines serve to produce coal, magnesite and small amounts of crude oil and natural gas. Slovakia mines about 2.3 million tons of hard coal and brown coal, which is a significant amount in comparison with other materials. The article presents the most important problems and issues connected with balanced development of Slovak mining in the light of current political, economic and ecological conditions
Access status: Open Access ,
Numeric dispersion calculations for evaluation measures and prediction of particulate matter emissions by surface mines
(Wydawnictwa AGH, 2009) Böhner, Rebeca; Niemann-Delius, Christian
In January 2005 a new European Legislation on Air Quality became effective. Since this time, strict limit values for particulate matter in the outside air apply to the member states of the European Union. Surface mines have come in the public focus, because particulate matter concentrations are substantial in their vicinity. The material mining industry operating open pits contributes to particulate matter concentrations on account of the spatial extent of its operations and the related processes. According to the EU law every particulate matter polluter is obliged to reduce its emissions and start measures to reduce dust if necessary. Therefore, action plans have been drawn up and implemented for example for the Hambach and the Garzweiler mine in the Rhenish Lignite District in Germany. The measure mostly comprise technical means, but the effect is not yet complete scientifically established. The development of adequate measures to avoid particulate matter emissions is a central task for companies as well as for public authorities An important part in this is the knowledge of the processes that entail particulate matter concentrations. The aim is to pinpoint particulate matter concentrations and detect the processes which are responsible. Next to selective measurements, numeric dispersion models constitute an important monitoring and forecast procedure. The results enable delivering a clear picture of the emissions and their dispersion, to guide planning and to achieve the standards of the current and future air European quality regulations.
Access status: Open Access ,
Ocena zasobu trwałości zmęczeniowej ustrojów nośnych maszyn podstawowych górnictwa odkrywkowego
(Wydawnictwa AGH, 2011) Alenowicz, Jerzy; Onichimiuk, Marek; Wygoda, Marian
Specificity of operation and construction of opencast mining basic machines has been presented in the paper. Regulations of load carrying structures dimensioning and existing inconveniences have been discussed. Reasons of fatigue fracturing in these structures have been indicated. Previous assessment methods of fatigue life resources based on research have been presented. Description and operational scheme of a system of constant monitoring of load carrying structure effort of opencast mining basic machines has been placed. Advantages resulting from system implementation in current exploitation of machines have been given. Possibilities of system implementation in brown coal opencast mines have been discussed.
Access status: Restricted ,
Oczyszczanie wód kopalnianych z kopalni odkrywkowych
(Data obrony: 2017-10-25) Smolińska, Paulina
Wydział Geologii, Geofizyki i Ochrony Środowiska
This paper is based on literature studies and describes purification methods of opencast mine waters, focusing on the most common contaminants. It also discusses methods of mine drainage and water management issues including possible outcomes and threats to the environment. It demonstrates, if and in which cases mine waters should be treated, inter alia, on the example of the dolomite mine „Libiąż”.
Access status: Open Access ,
Problemy klasyfikacji i wydobycia trudno urabialnych skał i gruntów w kopalniach węgla brunatnego
(Wydawnictwa AGH, 2010) Kozioł, Wiesław; Machniak, Łukasz
The following report presents the genesis of disorders associated with the occurrence of hard rock mass, and a projected rocks provided to exploitation, based on the example of »Bełchatów« and »Turów« lignite deposits. Described the basic ways of determining the mineability of hard rocks and soil, as well as an attempt to use geomechanical classification of rock formation to assess the operating effects. The next part describes the influence of hard rock mass on the operating effects of bucket wheel excavator.
Access status: Open Access ,
Proces przygotowania do transportu maszyn podstawowych na własnym podwoziu pomiędzy odkrywkami na przykładzie KWB »Konin« SA
(Wydawnictwa AGH, 2010) Jagodziński, Zbigniew
The article discusses the problems and issues necessary to resolve during organization of the mining machinery's transport on their own undercarriage from a technical and legal point of view. Konin Lignite Mine has the most experience in conducting this type of operations due to the fact that a lot more transports of machines have been conducted than in any other lignite mine in Poland. The article demonstrates how to cope with the logistical preparation of the entire operation, both for the preparation of the equipment and the settlement of formal and legal matters.
Access status: Open Access ,
Rekultywacja w polskim górnictwie odkrywkowym węgla brunatnego
(Wydawnictwa AGH, 2010) Kasztelewicz, Zbigniew; Sypniowski, Szymon
The article presents the reclamation of post-mining terrains in particular Polish lignite mines. Reclamation as a terrain's value restoration process should be widely promoted as pro-environmental and prosocial activity of the mines.
Access status: Open Access ,
Stan obecny i strategia rozwoju branży węgla brunatnego w I połowie XXI wieku w Polsce
(Wydawnictwa AGH, 2009) Kasztelewicz, Zbigniew; Kaczorowski, Jacek; Mazurek, Sławomir; Orlikowski, Dariusz; Żuk, Stanisław
The article introduces the present state of brown coal mines, including fundamental production parameters from the beginnings of operation till year 2008. The main part of the article are assumptions concerning individual mines about sustaining and developing production capacity both in existing and perspective basins. There are also possible quantities of coal output, quantities of power and production of electric energy in active and new power plants as well as chemical processing of brown coal to liquid and gas fuels shown in the paper.
Access status: Open Access ,
Surfacing of cutting edges for clay cutting
(Wydawnictwa AGH, 2011) Hermann, Jörg; Kraemer, Hubertus; Stenzel, Peter; Sevim, Agah Meric
Wear or abrasion in lignite opencast mining have a complex appearance and are caused by excavated material. In order to minimize costs for the mining company a project for optimizing geometries and alloys of clay cutting edges has been started by responsibles of CORODUR Fulldraht GmbH - Das Original. In this article it is described how an optimisation is setted up - from updated geometries for both, left and right cutting edges, over new alloy compositions to development of welding technologies. Moreover there has been checked the feasibility of PTA-welding and Open Arc welding and also the welding sequence which had to be feasible. Mechanisation by robots resulted in better weldbead appearance, lower costs and an in general more stable quality of welded clay cutting edges. At the end of the study including insitu wear tests it has been showed that the service life in the test period has doubled, compared with the former technology. Beside this it was possible to decrease the energy consumption in operation of the excavator by the new geometries for the cutting edges.
Access status: Open Access ,
Technologia wydobycia trudno urabialnych skał nadkładowych na przykładzie Kopalni Węgla Brunatnego »Bełchatów«
(Wydawnictwa AGH, 2011) Kozioł, Wiesław; Machniak, Łukasz; Sośniak, Edward; Chałupka, Robert
Hard-to mine rocks occur both Bełchatów and Szczerców field. The prognose shown the necessity of exploitation about 1.4 million $m^{3}$ of hard-to mine rocks annually. Majority part of them is not mined mechanically with bucket wheel excavator operating in the mine. Therefore in the mine Bełchatów uses of preliminary loosened by means of blasting technique. The loosened of rocks due to the possibilities of mechanical mining exploited with bucket wheel excavators or auxiliary machine on cyclical characteristic of the work. The all stages of technological process exploitation of hard-to mine rocks have been presented.
Access status: Open Access ,
Współczesne algorytmy sterowania maszyn górnictwa odkrywkowego w przykładach aplikacyjnych
(Wydawnictwa AGH, 2011) Jabłoński, Mariusz; Anuszczyk, Jan
The article discusses the effects of our own service and start-up works, review and projects, carried out in years 2006-2010 in the areas of the of KWB »Bełchatów« quarry and KWB »Turów« quarry. While these work there were made several of studies and analysis of the solutions there were used in both the programming technique, communication and drive systems. Research was focused on the KTZ system machines and their working conditions. All this was supported by graphical verification. Studies carried out in the article consists mainly of inverter drive systems and drive motors control algorithms of the traverse, rotation and lift either using a speed sensor or sensorless. During the research, there was carried out several working tests at working mining machines, and modifications of control algorithms implemented for commercial inverter systems software, PLC and HMI systems responsible for the drive work of testing machine. The main purpose of all the work was reducing of jittering and vibration during machine operation and ensuring a high level of operational reliability of the solutions, improving of mobility and safety.
Access status: Open Access ,
Zagospodarowanie terenów pogórniczych KWB »Adamów« SA w Turku - krajobraz przed rozpoczęciem działalności górniczej i po jej zakończeniu
(Wydawnictwa AGH, 2011) Orlikowski, Dariusz; Szwed, Lilla
The article presents experiences acquired in the Adamów brown coal mine in the field of land reclamation. The reclamation of the already closed pits and those planned to liquidation in the nearest period have been described. The greatest challenge of land reclamation is not only reestablishment of post - mining area when lignite comes to end but created completely new landscape.
Access status: Restricted ,
Zasady dokumentowania warunków geologiczno-inżynierskich terenów zdegradowanych przez górnictwo odkrywkowe
(Data obrony: 2017-07-12) Stoch, Anna Maria
Wydział Geologii, Geofizyki i Ochrony Środowiska
Górnictwo odkrywkowe jest jedną z dziedzin przemysłu, która obejmuje procesy w otwartym wyrobisku prowadzące do wydobycia kopaliny. Działalność ta prowadzi do nieodwracalnych przekształceń w środowisku naturalnym, przede wszystkim wywiera negatywny wpływ na rzeźbę terenu i prowadzi do powierzchniowych przeobrażeń utworów geologicznych. Rozpoznanie i właściwe udokumentowanie warunków geologiczno-inżynierskich jest fundamentalnym elementem podczas późniejszych prac rekultywacyjnych zdegradowanego terenu. Podczas dokumentowania należy kierować się zasadami opisanymi w pracy, aby jak najbardziej zoptymalizować niekorzystne działania oraz zminimalizować ich skutki. Zasady przedstawione w pracy zostały zebrane i opracowane na podstawie źródeł archiwalnych i przepisów.