Browsing by Subject "ruch górotworu"

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Access status: Open Access ,
Określanie wartości parametrów odkształceniowych górotworu uwarstwionego w rejonie wpływów eksploatacji górniczej
(2007-07-05) (Data obrony: 2008) Tajduś, Krzysztof Franciszek
Wydział Górnictwa i Geoinżynierii
The primary objective of the following dissertation is to determine the value of strata parameters in a selected areas of the Polish mines using the author's own method based on finite element analysis, GSI geotechnical classification, laboratory tests, "back analysis" method and the knowledge about geological and mining situation. In the first stage the preliminary analysis were carried out about: rock mass failure hypothesis above excavation, influence of the modeled parameters on the surface settlement. In the next stage, author presented the rock mass classifications and from those he chose one which was the best for this task. The main stage of presented work was: numerical calculations for a chose areas of Polish mines: „Bogdanka", „Budryk", „Bielszowice", „Marcel", „Piast", „Siersza", „Staszic", „Wieczorek", „Wujek", „Wesoła", „Ziemowit". Basing on the carried out calculations, the strain parameters of the rock mass layers were determined. At the end of work author carried out the modifications for a Heok rock mass classification for the rocks in the area of Polish mines.
Access status: Open Access ,
Opracowanie modelu konwergencji wyrobisk w podziemnych kopalniach soli
(Data obrony: 2010) Maj, Agnieszka
Wydział Geodezji Górniczej i Inżynierii Środowiska
The research is devoted to the study of the convergence model which is designed for the description of the phenomenon of the convergence of workings in underground salt mines. The physical basis of the model is the constitutive relation for a viscous-elastic medium with the Norton-Bailey power creep law developed in the USA and Western Europe in connection with the building of underground hydrocarbon storages and radioactive waste repositories. In this research, on the basis of numerical calculations using the finite element method, a series of model properties determining the functional relations between convergence and the shape and depth of workings, both the elastic and viscous features of the rock mass, including creep compliance, have been revealed. The relationship between convergence and rock mass heterogeneity, the impact of temperature and filling a working with liquids of various density, as well as the impact of adjacent workings – with the use of 2D and 3D modelling – have also been presented. The research contains a wide review of used methods and instruments for surveying of convergence in Polish salt mines, the assessment of the accuracy and frequency of convergence surveys. The elaborated model has been used for the interpretation of survey results, including Sieroszowice salt mine. A recommended manner of establishing survey station, calculation method, and the revealing of the viscous characteristics of salt rock mass with the use of long-term surveys which can be used for engineering work, as well as to forecast the convergence of workings and rock mass movement have been presented. The guidelines for further convergence measurements and the interpretation of results obtained basing on the convergence model, have been formulated.
Access status: Open Access ,
Wpływ zaszłości eksploatacyjnych oraz aktywności sejsmicznej górotworu na utrzymanie wyrobisk przygotowawczych w pokładach węgla kamiennego
(2005-03-31) (Data obrony: 2007) Olechowski, Sławomir
Wydział Górnictwa i Geoinżynierii
In this thesis the autor writes about the influence of the old exploitation and the seismic activity of rock mass on stability of the opening-out headings in the coal beds. There are the analisys of influence of seismic activity, the rate of the face advance and the old exploitation on stability of the opening-out headings in the coal beds in KWK "Rydułtowy-Anna" in the paper.