Górnictwo i Geoinżynieria
Loading...
ISSN 1732-6702
Issue Date
2009
Volume
R. 33
Number
Nr 3/1
Description
Journal Volume
Górnictwo i Geoinżynieria
R. 33 (2009)
Projects
Pages
Articles
Dorobek naukowy i organizacyjny profesora Andrzeja Wichura w zakresie budownictwa podziemnego
(Wydawnictwa AGH, 2009) Czaja, Piotr; Grzybowski, Wiesław
Ocena zagrożenia zapadliskowego wybranych komór KS »Wieliczka« w oparciu o obliczenia numeryczne
(Wydawnictwa AGH, 2009) Cała, Marek; Czaja, Piotr; Flisiak, Danuta; Kowalski, Michał
The Ryncarz criterion is usually applied for estimation of discontinuous surface deformations hazard for underground caverns of Salt Mine Wieliczka. The criterion assumes that the broken zone slowly advances from cavern roof to surface level. This paper confirms that application of three-dimensional (3D) numerical modelling of processes occurring in the salt rock mass may be much better tool for that purpose. It must however utilise properly evaluated mechanical and time-dependant properties of the salt rock mass. The 3D modelling also allows to take under consideration the size and shape of caverns. The Finite Difference code FLAC3D was applied for numerical calculations and shear strength reduction method was selected to estimate discontinues deformations hazard. Two cases were analysed: one cavern Neustadter and a group of caverns consisted of Rainer I Upper, Rainer I Lower and Skoczylas. The application of developed analysis method and factor of safety values allowed to confirm that discontinues deformations hazard for analysed cases is very low.
Nieliniowa deformacja izotropowej sfery grubościennej
(Wydawnictwa AGH, 2009) Cała, Marek; Paluch, Marian; Tajduś, Antoni
Liquid and gas fuels or other fluids may be stored in containers of several shapes. This paper deals with spherical reservoirs located overground or underground. The walls of the container are made from Mooney material. In case of overground containers, the internal fluid pressure may be much higher from external pressure (from atmospheric pressure). In case of underground ones, internal and external pressures may differ depending on reservoir size, location and virgin stress field. That's why, four different cases of pressure conditions were analysed with application on non-linear elasticity theory. The presented solution may be applied in initial stages of design of spherical reservoirs located overground or underground.
Zabezpieczające prace górnicze w obiektach archeologicznych - zabezpieczenie jaskini w Obłazowej
(Wydawnictwa AGH, 2009) Chmura, Janusz
The archeological investigations that were conducted in the valley of the Białka river in the Obłazowa cave in 1985-95 resulted in many significant discoveries. Among them were the world oldest boomerang made of the mammoth tusks and many objects with magical significance to the prehistoric man. The discoveries were dated from 30 thousand years BC. After a few-year break in the investigations, preparations to the next stage of archeological investigations started that aimed at reaching the rock bottom of the cave. However, they had to be preceded by preservation operations as the present technical condition of the cave posed a danger to people inside. Preservation operations were carried out aiming at the stability of the walls and the roof. They did not destroy the initial looks of the working but at the same time they ensured full safety to people inside. What is more the safety elements were masked and invisible when the work was completed. The materials applied had suitable certificates that alloved them to be used in difficult conditions, and were neutral to the surrounding environment.
Średniowieczny kolektor sanitarny w Przemyślu jako element podziemnej trasy turystycznej
(Wydawnictwa AGH, 2009) Chmura, Janusz; Mikoś, Tadeusz
The construction plans of an underground tourist route that joins the cellar of several buildings in the area of the Przemyśl Market Square have been under preparation for some years now. The opening of the cellars to the public and connecting them into one underground system together with the historic intercepting sewer will create an attractive route, both from the tourist but also from the business and teaching points of view. The first stage of the project includes the connection of the cellars of the Town Hall, the exit to the Market Square and a passage to the cellars of the 11, Market Square building. Thus an interesting tourist route will be created, showing a part of the underground city.