Górnictwo i Geoinżynieria
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ISSN 1732-6702
Issue Date
2009
Volume
R. 33
Number
Nr 3
Description
Journal Volume
Górnictwo i Geoinżynieria
R. 33 (2009)
Projects
Pages
Articles
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.
O pierwszej kobiecie z dyplomem magistra inżyniera górnika
(Wydawnictwa AGH, 2009) Chadaj, Anna
The article presents the profile of the first female graduate of the Mining Department, her professional career and positions held. Attention is drawn to her underground activity during the Second World War.
Prognozowanie temperatury powietrza w przodkach wyrobisk ślepych przewietrzanych wentylacją lutniową - 3D symulacja komputerowa
(Wydawnictwa AGH, 2009) Branny, Marian; Filipek, Wiktor; Karch, Michał
The solution is supported by equations and simulation programs utilizing the CFD approach. The description of wall boundary conditions utilizes the modify wall function. The temperature of side walls was obtained from the solution of a substitute problem. This temperature is a result of the solution of equation of heat conduction with boundary conditions describing the exchange of heat between the rock and the flowing air. The influence of evaporating water on air temperature was taken into consideration. The volumetric source of heat (negative) was defined in energy equation. The source terms were located in group of cells adjacent to the wall. Calculation data are presented in the form of velocity field and air temperature images in the face zone of a working with a force-exhaust overlap system of ventilation.
Wpływ parametrów ustalonego przepływu dwufazowego w szybie wentylacyjnym na parametry pracy wentylatora głównego
(Wydawnictwa AGH, 2009) Branny, Marian; Nowak, Bernard; Ptaszyński, Bogusław; Kuczera, Zbigniew; Łuczak, Rafał; Życzkowski, Piotr
The two-phase flow, in which a continuous phase is moist air and a discrete phase is water, occurs frequently in the ventilating shafts. Flow of discrete phase, often bidirectional, can cause a change of direction of air flow in the shaft, in spite of function a main fan. In the article, the results of numerical research of influence of the two-phase steady flow in the upcast shaft on the parameters of main fan are described.
Techniki eksploracji danych w zagadnieniach eksploatacji górniczej złóż węgla kamiennego
(Wydawnictwa AGH, 2009) Brzychczy, Edyta
The paper presents a review of data mining techniques applied to the mining process issues. At the beginning, the need of knowledge discovery is described and the characteristic of data according to the mining process of deposit are given. The importance of information in management of the mining process was emphasized. In the continuation, process of data exploration was described. Attributes of data were characterized as well as the examples of data analysis techniques according to the formulated exploration tasks. The data exploratory model could be created on the basis of the wide know methodologies. In the paper two methodologies were presented: Cross-Industry Standard Process for Data Mining (CRISP-DM) and SEMMA evolved in SAS Institute. In the continuation, examples of the selected exploratory techniques in analysis of the hard coal mining process elements are presented. The following techniques are described: linear regression, neural networks, decision trees, clustering algorithms and association rules. Described techniques were applied to problems such as: methane threat prognosis, longwall gates compression, analysis of longwall equipment, analysis of longwall gate equipment and research on similarity of mining excavations.