Górnictwo i Geoinżynieria
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ISSN 1732-6702
Issue Date
2010
Volume
R. 34
Number
Nr 2
Description
Journal Volume
Górnictwo i Geoinżynieria
R. 34 (2010)
Projects
Pages
Articles
Optymalizacja geometrii bryły odłamu w uogólnionej metodzie elementów kinematycznych
(Wydawnictwa AGH, 2010) Bagińska, Irena; Izbicki, Ryszard Jerzy
The paper deals with the generalized kinematic elements method. In particular the rules for constructing the optimization object out of the power equilibrium equation is explained. The procedure for optimizing geometry the collapse mechanism is presented. The work describes both: application of constraints in the form of the punishment function and adoption of Nelder-Mead's nongradient method for global optimization.
Special purpose engineering geological maps of slope failures in Slovakia
(Wydawnictwa AGH, 2010) Baliak, František; Striček, Igor
The territory of Slovakia is characteristic with extremely frequent occurrences of various types of slope failures. Especially landslides are one of the major geotechnical problems in Slovakia. The landslides significantly affect building and operation of large amounts of transport, watermanagement and underground constructions. Results of regional research of slope stability of certain areas are perfectly illustrated in the special purpose engineering-geological maps of slope failures, which are usually made in scales from 1:5000 to 1:50 000. Slope failure maps can be classified by the content, type of compilation and their purpose. The most prevalent are large scale (M = 1:10 000) maps of engineering geological conditions and medium scale (M = 1:50 000) landslide susceptibility maps. Special purpose engineering geological maps of slope failures appear to be the most appropriate information for investors, city planners and developers.
Przydatność mieszanek popiołowo-gruntowych do budowy nasypów komunikacyjnych
(Wydawnictwa AGH, 2010) Batog, Andrzej; Hawrysz, Maciej
The paper presents results of the investigations of the anthropogenic material created as the composition of sandy soil and the ash-slag. The wastes from burning of coal in one of heat and generating plants in Wrocław and the local sand were used. The obtained results determined the range of usability the two different mixtures to the construction of the road embankments. The discussion of the usability were performed. The lack of compatibility in the technical guidelines and technical standards were underlined especially in case of the criteria used for the organic part contents determination.
Wartości charakterystyczne parametrów geotechnicznych gruntów wyznaczane według Eurokodu 7
(Wydawnictwa AGH, 2010) Batog, Andrzej; Hawrysz, Maciej
The enclosed in the Eurocode 7 guidelines for the estimation of the characteristic parameters are commonly general and some of the essential definitions which used for the description of this problem are inaccurate for the geotechnical engineering. The acceptable and usable methods for the estimation of geotechnical parameters in case of small data set were not presented in EC7. In this paper compatible with EC7 methods of estimation based on the statistical analysis were presented and discussed.
Wpływ zmienności losowej parametrów podłoża na ocenę niezawodności pracy pala obciążonego siłą poziomą
(Wydawnictwa AGH, 2010) Bauer, Jerzy; Kozubal, Janusz; Puła, Wojciech; Wyjadłowski, Marek
This paper presents probabilistic modeling of pile displacement under random lateral forces acting on the pile head. An original numerical model is presented incorporating a randomly varying elastic modulus with depth. The probabilistic computations take into account different values of the coefficients of variation as well as correlation coefficients of random variables. The probability of excessive displacements and corresponding reliability indices were evaluated. The computed examples show that the displacement exceeding the allowable value is determined by the force acting at the head of the pile and by the variation of the elastic modulus of the soil.