Browsing by Subject "mining"

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Access status: Open Access ,
Algorytmy automatycznego wyliczania bilansu mas węgla surowego oraz skały płonnej przy drążeniu chodników
(Wydawnictwa AGH, 2011) Krowiak, Andrzej
In the article mathematical models being used to automating calculations of balance of masses of raw coal and the barren rock were described, for each of working days comprising for the project of opening deposits (driving of the galleries). Three types of algorithms were considered: for the model assuming the successive performance of excavations, for the model taking into account the division of individual excavations into intervals differing indeed the proportion of raw coal and the waste rock and the model assuming parallel driving a few excavations. Enumerated functions are suitable to direct utilization, after defining entrance data.
Access status: Open Access ,
Analiza odległości i czasu między wstrząsami ze strzelań torpedujących a samoistnymi o energii rzędu E4 J w warunkach KW SA KWK »Piast«
(Wydawnictwa AGH, 2008) Rusinek, Józef; Kurnik, Stanisław
In the years 2002-2006 there were carried out the mining operations at the areas V, VII, VIII, XV and XVII, which were a reason of rock-mass tremors and 1532 rock-mass tremors with the seismic energy of the order 10/4 J occurred. In the analysed period 751 torpedo blastings were carried out and 598 tremors were registered as a result of torpedo blasting. After joining the database of rock-mass tremors with the seismic energy of the order 10/4 J and tremors of torpedo blasting which link to the same area of the mine, there were obtained 311 tremors of torpedo blasting and 1118 rock-mass tremors with the seismic energy of the order 10/4 J. Inter-correlation between tremors concerns a distance from a hypocenter of the tremor of torpedo blasting to a hypocenter of the rock-mass tremor with the seismic energy of the order 10/4 J and a distance from a place of detonation of explosive charge (a foot of a blasthole) to a hypocenter of the rock-mass tremor with the seismic energy of the order 10/4 J. The time period between tremors of torpedo blasting and rock-mass tremors with the seismic energy of the order 10/4 J was also a subject of the analysis.
Access status: Open Access ,
Analiza wyników produkcyjno-ekonomicznych branży węgla brunatnego w roku 2008
(Wydawnictwa AGH, 2009) Żuk, Stanisław
The topic of this paper presentation of the up-to-date status of the brown coal mining in Poland based on the production data of four brown coal mines having been running the business in Poland in the last ten years and on the basis of the production effects and the latest achievements in the branch. The operation effects as up to now, and the economic results referring to the use of the brown coal in the power engineering prove that it is a strategic fuel, playing a valid role in covering the power demands of Poland. The Polish power engineering based on the brown coal against the background of the whole Polish power engineering has also been presented and the status of the state brown coal mining in respect of the future role of the coal in Europe has been compared. In Poland, similarly as in other European countries, the brown coal branch and connected with it power engineering is modern and its functioning is based on the latest scientific, project and operation researches. The taken and planned to be taken actions secure the meeting the environmental conditions, including the appropriate directives of the European Union. In this paper, an attempt has been taken to discuss the problems connected with the possibilities and perspectives of the Polish power engineering development based on the brown coal in the 21st century.
Access status: Open Access ,
Analiza wyników produkcyjnych polskiej branży węgla brunatnego za lata 2008-2010 oraz przegląd obecnej sytuacji w górnictwie węgla brunatnego krajów Unii Europejskiej
(Wydawnictwa AGH, 2011) Żuk, Stanisław
The topic of the paper is a presentation of the achievements of the brown coal mining branch in Poland based on the productive data of four brown coal mines active in the perspective of the quarters too III years 2008-2010. Description refers to the basic data in respect to operational resources in the active regions of the exploitation operation of the brown coal mines. In the further part a trial was undertaken to present the power engineering based on the brown coal in the background of the whole Polish electrical power engineering as well as a comparison of its stand with the current situation in the brown coal mining in EU and the role of the brown coal mining in the power engineering system of Europe was made.
Access status: Open Access ,
Archaeological remains of the copper metallurgy in Lower Silesia
(2013) Garbacz-Klempka, Aldona; Rzadkosz, Stanisław; Stolarczyk, Tomasz; Kozana, Janusz; Piękoś, Marcin
Many traces of copper metallurgy, such as slag and other copper melts, can be found in the area of Lower Silesia. The tested material mainly consists of copper slag with different content of copper melts, being a semi product. The copper metallurgy remains, discovered during the research, undergo specialistic analyses, which will help better characterise the findings as well as contribute to documenting metallurgical processes in the historical bloomeries in Lower Silesia, and moreover to prepare further research in this field. The material coming from the area of Miedzianka, being the oldest and the longest working exploitation centre of copper ores and pollymetalic ores, is of special significance for the research. Mining activity in the area of Miedzianka took place as early as the beginning of the 14th century, the first record from 1311 (Cuprifodina in montubus) is the oldest information concerning copper mining in Poland.
Access status: Open Access ,
Automated transfer point URB/ZS-3
(Wydawnictwa AGH, 2017) Krauze, Krzysztof; Rączka, Waldemar Stanisław; Sibielak, Marek; Konieczny, Jarosław; Kubiak, Dariusz; Culer, Henryk; Bajus, Daniel
In the KGHM Polska Miedź S.A. mines, excavated material is transported by transport trucks to transfer points and then by belt conveyors to near-shaft storage reservoirs, from where the excavated material is transported to the surface by means of a shaft transport system. Transfer from the means of non-continuous haulage to the continuous transport systems takes place at transfer points, where the excavated material is divided into two fractions: oversized grain and undersized grain. The oversized excavated material (which stays on the grating) is subjected to a process of crushing with the use of jack hammers. The article describes the URB/ZS-3 device for the automatic cleaning of the grating at transfer points, and briefly describes the design and principle of operation of the device. It also presents the purpose of constructing a block-crushing device and the method of its automation.
Access status: Restricted ,
Badania grawimetryczne stref występowania pustek antropogenicznych na wybranych przykładach
(Data obrony: 2013-11-14) Śliwa, Marta
Wydział Geologii, Geofizyki i Ochrony Środowiska
The thesis describes the results of microgravity studies in the area of occurrence of adits and mining tunnels in the neighbourhood of Olkusz at Silesia-Cracow Upland. The choice of this geophysical method was dictated by the depth of appearance of the void, and density contrast between seeking object and the surroundings. As a follow-up investigation method were used a GPR method. The results of microgravity researches have been analysed by qualitative (by using a polynomial method) and quantitative (by gravimetric modelling) interpretation. Finally the results of both methods was summarized together. Analysis of the received data allowed us to estimate the size, location and course of the tunnel.
Access status: Open Access ,
Badania mikrograwimetryczne nad płytko leżącymi starymi sztolniami wydrążonymi w piaskowcu
(Wydawnictwa AGH, 2009) Porzucek, Sławomir
Shallow underground exploitation of mineral and rock resources has left behind shallow-seated workings that often are made accessible to tourists. Therefore the crucial matter is to determine the stability of the underground workings. Geomechanics research and modeling are applied to solving the problem. This paper presents the use of the microgravity method to recognize density distribution in the rockmass overlying old mining workings. Results of investigations made over three adits drifted in the Istebna sandstones. Rock slackness zones were discovered over two galleries. As a result of the gravity modeling, the size of the zones and bulk density decrease were obtained. The results should help in construction of right geomechanics model as well as qualitative evaluation of the condition of workings.
Access status: Open Access ,
Badania zasięgu i intensywności strefy spękań wokół chodnikowych wyrobisk korytarzowych
(Wydawnictwa AGH, 2009) Kabiesz, Józef; Patyńska, Renata
In the Carboniferous stratified rock mass there occur discontinuity systems coupled to its lithologic structure and the structural features of rocks. The formation of an opening causes the cracks to part, which frequently leads to the essential degradation of the rock mass strength parameters around the opening. Changes in the rock mass properties around the excavation can be of the highest importance to the selection of its proper support, as well to the assessment of maintenance requirements, hazards occurring in its vicinity, rock mass imperviousness, etc. The problem of the fracture distribution around excavations has been confined to the characteristic of natural fractures. The rock fracture distribution has been investigated and assessed based on the in situ performed studies of endoscopic bore-holes and on the aerometric measurements. From the obtained results of the analysis and the existing rock mass classifications, the fracture characteristics of the surroundings of the excavations under study are presented and, for example, the rock mass imperviousness classification needed for their use in the formation of underground storage facilities to store gases and liquids is given.
Access status: Open Access ,
Betek modern tool systems
(Wydawnictwa AGH, 2022) Wojdyło, Grzegorz
During the transformation period, in order to secure sufficient amounts of energy and to ensure that energy systems remain stable, it will still be necessary to produce energy based on raw materials such as coal, natural gas, and oil derivatives. Hence, mining techniques are being developed to increase productivity and improve safety by eliminating workstations that pose a risk to human health and life. This is ensured by fully automated mining systems. However, even the best-designed system is only as strong as its weakest link. In most mining machines, the cutting tool that has the most impact on performance are the tangential rotary bits (picks). Fully automated mining machine systems only make sense if the working units are designed with high-quality materials used in the production of bit holders, bit sleeves, and the bits themselves. This is something that EURO-TECH PLUS Sp. z o.o. has been working on together with Betek for years.
Access status: Restricted ,
Chemizm wody w Wiśle między Jeziorem Goczałkowickim a ujściem Skawy
(Data obrony: 2017-10-18) Bartuś, Natalia
Wydział Geologii, Geofizyki i Ochrony Środowiska
W pracy dyplomowej podjęto problem związany ze zmianą chemizmu wody w Wiśle, która jest spowodowana przede wszystkim działalnością górniczą. Określono który z zakładów górniczych odpowiedzialny jest za największy zrzut zanieczyszczeń. Praca miała charakter badawczy i składała się z dwóch części. Teoretycznej, mającej na celu określenie budowy geologicznej, hydrografii i praktycznej polegającej na pobraniu prób wody z cieków powierzchniowych. Analiza otrzymanych wyników pozwoliła na określenie zmian parametrów fizykochemicznych w wodach rzeki Wisły od Jeziora Goczałkowickiego do rzeki Skawy w Zatorze.
Access status: Open Access ,
Department of Hydrogeology and Engineering Geology
(Wydawnictwa AGH, 2016) Postawa, Adam
Access status: Open Access ,
Dobór sposobu eksploatacji pola centralnego z uwzględnieniem ochrony części zabytkowej Giszowca
(2006) Firlit, Ireneusz
The process of mining coal in the 80s, which caused slight deformations in Giszowiec housing estate, obliged mines to analyses the way of selecting the field in order to preserve the historic parts and blocks of flats of the housing estate. On the basis of analyses concerning geological - mining conditions, the central field on the 510 seam, the prognosis of the surface deformations, as well as evaluation of resistance of the historic building and block of flats in Giszowiec housing estate, the extraction process with ceiling collapse of the seam is taking place within shortened range and with grouting of gob areas with smoke-box dust.
Access status: Open Access ,
Dziewięćdziesiąt lat edukacji w AGH - dziewięćdziesiąt lat pracy Wydziału Górnictwa i Geoinżynierii
(Wydawnictwa AGH, 2009) Czaja, Piotr
Everybody who smelled the fragrance of these corridors, the atmosphere of lecture halls, emotion of credits, and stress of exams as well as emotion of receipt of this respectable university degree - become the member of the big family of its Graduates. As to the aged grandmother for 90th birthday - we came with flushed cheeks into these unforgettable to recall the most beautiful time of the life, to met fellow-students, to penetrate the history arising in full view of us. I took this opportunity to present you the history formed by the Graduates of the Mining Faculty written in telegraphic way on the pages of our Faculty Mining, as a Graduates of the year 1973, whose fade willed honor him to manage of it during the period of splendid Jubilee - 90 years of existence.
Access status: Open Access ,
Effect of selected working conditions of cutting picks on their wear during the mining of hard rocks
(2010) Kotwica, Krzysztof
The article presents the influence of work conditions of rotary-tangential picks on their wear while compact rocks mining. There was mainly presented the influence of applying high-pressure support and spraying the tangent-rotary tools with water jets on their quantitative and qualitative wear during conducted laboratory tests in comparison to tools operating in dry conditions. There was suggested and presented a solution of holders lubricated with water under pressure to provide proper conditions of tangent-rotary tools work in the clamp. The results of laboratory tests of rotary-tangential picks fixed in the folders were presented and compared with results of picks only supported or sprayed with high-pressure water jets.
Access status: Open Access ,
Geodynamika centralnej części Górnego Śląska w świetle badań GPS
(Wydawnictwa AGH, 2009) Jochymczyk, Krzysztof; Zuberek, Wacław Marian
The seismological study carried out in the area of the Upper Silesia Coal Basin shows the close connection between strong tremors and geological structure. In this region tectonic stresses can be intensified by other stresses which have occurred owing to mining exploitation. To obtain the most valuable information on this relation leading to its plausible interpretation, it seems to be purposeful and advisable to apply geodynamical investigation. However, such a kind of investigation belongs to a long-term one, and its interpretation is relatively difficult owing to the fact that the area is under the intensive mining exploitation resulting in large dislocation and mining damage. That is why the geodynamical investigation in such troublesome region, despite the use of a high-tech GPS method, should be additionally developed by making detailed geological inspection and seismological research. Moreover, a geological survey should be done with great accuracy in the region of mining activity because it plays a key role in a complex interpretation based on obtained data. In the paper preliminary results of GPS measurements taken from 8 survey points are presented. The survey points were located meridionally in the north and central part of the USCB between Świerklaniec town and Mikołów town.
Access status: Open Access ,
Geotechniczne problemy utrzymania wyrobisk korytarzowych w złożonych warunkach geologiczno-górniczych
(Wydawnictwa AGH, 2005) Chudek, Mirosław; Duży, Stanisław
The output of useful minerals with underground methods causes the necessity of accomplishing and maintaining excavations in a defined time. These excavations often, when used, are liable to changeable influence of the rock strata mostly caused by the influence of mining works. It has a consequence in the conditions of selective mining exploitation which is an answer to market requisition. The paper presents problems in maintaining excavations localized in a rock strata characterized by i.e.: changing the geological structure along a shift of the analyzed excavations, complicated tectonical structure, complex layout of former exploitation etc., on the example of excavations from chosen collieries. The course of convergence of two roadways in the influence field of an active exploitation front.
Access status: Open Access ,
Globalne problemy górnictwa węgla brunatnego
(Wydawnictwa AGH, 2011) Tajduś, Antoni; Dubiński, Józef
The basis issues of global and national trends in lignite mining industry has been presented. Authors have formulated the key barriers and challenges for the Polish lignite mining industry and have proposed the priority lines of action for the development of this industry. On the basis of mining production and resources data as well as the structure of primary energy and electricity production in Poland the potential of lignite fuel and its importance for continued use in the domestic economy as the guarantor of a stable Polish energy policy have been emphasized.
Access status: Restricted ,
Górnictwo II : według wykładów prof. inż. Kazimierza Kasińskiego
(Sekcja Wydawnicza Stowarzyszenia Studentów Akademi Górniczej, 1931) Kasiński, Kazimierz; Dzierżbicki, Rościsław; Zając, Emil; Stowarzyszenie Studentów Akademii Górniczej
Access status: Open Access ,
Górnictwo w Polsce : opis kopalnictwa i hutnictwa polskiego pod względem technicznym, historyczno-statystycznym i prawnym. T. 1
(Drukarnia Juljana Kaczanowskiego, 1841) Łabęcki, Hieronim Hilary