Górnictwo i Geoinżynieria
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ISSN 1732-6702
Issue Date
2008
Volume
R. 32
Number
Nr 4
Description
Journal Volume
Górnictwo i Geoinżynieria
R. 32 (2008)
Projects
Pages
Articles
Ośrodek porowaty jako sieć przestrzenna utworzona z komórek elementarnych
(2008) Filipek, Wiktor
In this paper I have presented a structure of a virtual porous medium based on the principle of the similarity of this medium to the real one. At the beginning of this paper I have defined the conditions which should be fulfilled to make the virtual medium similar to the real one. Next, the ideas »an elementary cell« and »a multipole« have been introduced. The latter one makes it possible to exchange an actual sector of the porous medium into an elementary cell treated as a multipole. This multipole helps to write easily and clearly a system of equations of the functioning of the i-th elementary cell in the space lattice. The results of numerical calculations of the elementary cell chosen and representing a real porous medium have been given. These calculations confirm the sense of constructing virtual porous medium to make them imitate real ones.
Określenie skłonności skał do tąpań na podstawie badań próbek skalnych z kopalń Peru w sztywnej maszynie wytrzymałościowej
(2008) Krzysztoń, Danuta; Wosz, Ryszard Józef; Cieślik, Jerzy; Klisowski, Robert
Samples of two kinds rocks: limestone and mineral deposit from different mines of Peru were investigated in a stiff testing machine in conditions of a uniaxial compression at kinematic steering by the rate of sample longitudinal strain equal to 1.10-5 s-1. In general 63 samples (26 limestone samples and 37 mineral deposit samples) of slenderness equal to 2 were investigated. The complete stress-strain characteristic was the result of each sample test. The rock susceptibility to bumps was determined on the basis of different indexes, calculated according to the known formulae [11] in which the pre- and post-critical properties of rocks as well as the specific energies in the particular ranges of sample longitudinal strain were taken into consideration. The analysis of all applied indexes of susceptibility to bumps has proved that the investigated rocks are highly and very highly susceptible to bumps.
Rewitalizacja i zagospodarowanie turystyczne podziemnych wyrobisk górniczych zabytkowej kopalni złota i arsenu w Złotym Stoku
(2008) Mikoś, Tadeusz; Chmura, Janusz
W 1961 roku z przyczyn ekonomicznych zaprzestano eksploatacji w kopalni złota i arsenu w Złotym Stoku. Był to najstarszy ośrodek górniczo-hutniczy w Polsce. Nieczynna kopalnia, po wieloletnim procesie rewitalizacji pełni dziś funkcję kopalni turystycznej, którą odwiedza ponad 120 tys. turystów rocznie. Zwiększająca się ciągle liczba zwiedzających wymogła na właścicielach i zarządzie kopalni konieczność usprawnienia ruchu turystycznego. W tym celu wykonano połączenie sztolni Czarnej Dolnej ze sztolnią Czarną Górną, reaktywowano zlikwidowaną kolejkę podziemną i zmodernizowano trasę turystyczną pod kątem zwiększenia jej atrakcyjności i przepustowości.
Niektóre problemy z wykorzystaniem metanu z odmetanowania w Spółce Energetycznej Jastrzębie SA
(2008) Nawrat, Stanisław; Kuczera, Zbigniew; Łuczak, Rafał; Życzkowski, Piotr
A methane-aerial mixture is caught by demethanation system. This mixture can be used as a low-methane fuel in different kinds of heating-power engineering installations. Jastrzebie Energetic Company is the biggest energetic plant in Poland, where mixture from demethanation of mines is used as a fuel for electric energy and heat production. In this article is paid an attention to possibilities of improvement and extension of economical utilization of methane, which is caught by demethanation system. An analysis of intake, utilization and transport of gas mixture to consumers, who are associated in energetic company, are realized. Activity of Jastrzebie Energetic Company from 2000 to 2005 is analyzed. The technical state of gas installation, quantity and losses of gas, present and planned modernization of main conduit and demethanation system are taken into account.
Ochrona gazociągów na terenach objętych wpływem naprężeń górotworu wynikających z podziemnej eksploatacji górniczej
(2008) Wójcikowski, Maciej; Machowicz, Wojciech
The Upper Silesia area is a place of intensive mining activity. This activity has large impact on the area relief and on forming the subsidence process, which influence the pipeline integrity. This paper describes theoretical aspects of forming the subsidence basins. The examples of mining damage related to subsidence process has been shown. The preventive action of pipeline compensator has been demonstrated. The long term impact of exchange of medium pressure distribution network from steel to polietylene has been discussed.