ORIGINAL PAPER
Minimizing the time of breaks and stoppages of mining faces as an opportunity to increase the volume of mining and the efficiency of mines
1
AGH University of Science and Technology, Kraków, Poland
2
Central Mining Institute, Katowice, Poland
Submission date: 2023-04-17
Final revision date: 2023-05-14
Acceptance date: 2023-05-22
Publication date: 2023-06-12
Gospodarka Surowcami Mineralnymi – Mineral Resources Management 2023;39(2):177-194
KEYWORDS
TOPICS
Scientific background of mineral resource managementPreparation and processing of mineral raw materialsEconomics of mineral industries
ABSTRACT
A significant problem with the effective functioning of the hard-coal mining industry, especially in relation to mining enterprises and mines located in the Upper Silesian Coal Basin, are the high costs of mining. This is due to many reasons, among which, an important aspect is the ineffective use of the working time of mining faces. The unsatisfactory use of working time caused by unplanned shutdowns of mining faces is a significant reason for the fact that the use of the production potential of the expensive, modern mechanized systems built in them, with the production capacity of around 1,000–1,500 tons per hour, is relatively small – the average daily volume of mining from a longwall working is most often around 3,000 tonnes or even slightly less. A significant reason for this is the occurrence of a large number of interruptions in the continuity of their work, which is mainly caused by equipment failures, the impact of unfavorable geological and mining conditions or technological shutdowns.
The article deals with the problem of the unsatisfactory level of the effective use of working time in mining faces (longwalls) in Polish hard-coal mines. The main reason for this is the occurrence of a large number of unplanned stops and interruptions, sometimes lasting several days. Their elimination or at least reduction would significantly contribute to the improvement of the existing situation. The condition for this, however, is reliable analyses aimed at detailed the identification of their causes. It was proposed to use three methods – the analytic hierarchy process (AHP), the development of the Pareto-Lorenz diagram and the 5 Whys method. Examples of their practical application are also presented.
ACKNOWLEDGEMENTS
The paper presents results of research conducted in AGH University of Science and Technology no. 16.16.100.215.
METADATA IN OTHER LANGUAGES:
Polish
Minimalizacja czasu przerw i postojów przodków wybierkowych szansą na wzrost wielkości wydobycia i efektywności kopalń
przodek wybierkowy, postój, analiza, metoda, przyczyna
Znaczącym problemem dotyczącym efektywnego funkcjonowania branży górnictwa węgla kamiennego, szczególnie w odniesieniu do przedsiębiorstw górniczych i kopalń zlokalizowanych na terenie Górnośląskiego Zagłębia Węglowego, są wysokie koszty prowadzonej eksploatacji. Wynika to z wielu przyczyn, wśród których istotne miejsce zajmuje nieefektywne wykorzystanie czasu pracy przodków wybierkowych. Niezadawalające wykorzystanie czasu pracy spowodowane nieplanowanymi postojami przodków wybierkowych jest istotną przyczyną tego, że wykorzystanie potencjału produkcyjnego zabudowanych w nich kosztownych, nowoczesnych kompleksów zmechanizowanych, o możliwości produkcji około 1000–1500 ton w ciągu godziny, jest stosunkowo niewielkie. Znaczącą przyczyną tego jest występowanie dużej liczby przerw w ciągłości ich pracy, spowodowanych głównie awariami urządzeń, wpływami niekorzystnych uwarunkowań geologiczno-górniczych lub postojami technologicznymi.
W artykule poruszono problematykę niezadawalającego poziomu wykorzystania efektywnego czasu pracy w przodkach wybierkowych (ścianach) w polskich kopalniach węgla kamiennego. Główną przyczyną tego jest występowanie dużej liczby nieplanowanych postojów i przerw, czasem trwających nawet po kilka dni. Ich wyeliminowanie lub przynajmniej zredukowanie znacząco przyczyniłoby się do poprawy istniejącej sytuacji. Warunkiem tego jest jednak rzetelne przeprowadzenie analiz mających na celu szczegółową identyfikację przyczyn ich powstawania. Zaproponowano do tego wykorzystanie trzech metod – wielokryterialnej metody hierarchicznej analizy problemów decyzyjnych AHP, opracowanie diagramu Pareto-Lorenza oraz metody 5 Whys. Przedstawiono także przykłady ich praktycznego zastosowania.
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| eISSN: | 2299-2324 |
| ISSN: | 0860-0953 |
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