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Factors of revitalization of brownfields in the Czech Republic
Osman, Robert; Frantál, Bohumil; Kunc, Josef; Klusáček, Petr; Martinát, Stanislav
2014 - English
The paper deals with reuse of brownfields in the Czech Republic. Based on the analysis of information about re-use of residual spaces are shown major changes in the current management space. The paper is based on a comparison of two data files - specifically, the existing brownfields database managed by the CzechInvest and own database of brownfields that have already been revitalized. The paper is divided into three parts, the first part of the paper analyzes the structure of a revitalized brownfields, in the second part of the paper, the structure of this file is compared with the structure of existing brownfields and the third part analyzes the factors revitalization of brownfields. The paper aims to answer the question what functions take the brownfields after revitalization and what factors determine their reuse.
Keywords:
space management; revitalization; brownfield
Available at various institutes of the ASCR
Factors of revitalization of brownfields in the Czech Republic
The paper deals with reuse of brownfields in the Czech Republic. Based on the analysis of information about re-use of residual spaces are shown major changes in the current management space. The paper ...
New Rock Mechanics Testing and Measuring System at the Institute of Geonics
Janeček, Ivan; Mishra, D.
2014 - English
New research tasks of the Department of laboratory research on geomaterials at the Institute of Geonics required improvement of experimental technique for investigation of the geomechanical properties of rocks and mastering of new rock testing methods as well. A new computer controlled hydraulic press with large set of adaptive accessories could meet the demands. With EU support of the project Institute of Clean Technologies for Mining and Utilization of Raw Materials for Energy Use (CZ.1.05/2.1.00/03.0082), a new Rock Mechanics System of the MTS Corporation was purchased, installed and put into operation.
Keywords:
rock testing; measurement under uniaxial and triaxial loading; testing of permeability and poroelastic response
Available in digital repository of the ASCR
New Rock Mechanics Testing and Measuring System at the Institute of Geonics
New research tasks of the Department of laboratory research on geomaterials at the Institute of Geonics required improvement of experimental technique for investigation of the geomechanical ...
The X-ray CT lab and the research at the Institute of Geonics AS CR
Souček, Kamil; Staš, Lubomír
2014 - English
In recent decades, non-destructive methods of materials analysis (Desrues 2006) have been used increasingly for the study of different kinds of materials. Especially, it concerns the method of the X-ray computed tomography (CT). This technique was invented in 1970's (Hounsfield 1972) and it quickly became an indispensable part of medicine. In the 1980's, this success in medicine encouraged the research and development of the X-ray CT applications in the field of materials engineering and consequently also in the field of geomaterials (Otani, Obara 2004). Nowadays, many applications are possible due to high resolution of individual building units in the tomographic cross-sections (so called voxels) with dimensions of units or tens of micrometres. To get this resolution, the use of the 2D and the 3D high-resolution X-ray CT, or the micro-CT with micro-focal sources of X-rays, and suitable linear or flat (2D) X-Ray detectors are preferred.
Keywords:
X-Ray computed tomography; non-destructive investigation of geomaterials; X-ray CT lab; rentgenové záření; materiály
Available in digital repository of the ASCR
The X-ray CT lab and the research at the Institute of Geonics AS CR
In recent decades, non-destructive methods of materials analysis (Desrues 2006) have been used increasingly for the study of different kinds of materials. Especially, it concerns the method of the ...
Stability of suspension bridges in lateral wind
Malík, Josef
2014 - English
The collapse of the original Tacoma suspension bridge has been studied in many papers. On 7 November 1940 around 10 a.m. the torsional oscillations appeared on the deck of the original Tacoma bridge after the loosening of one midspan cable band, which resulted in the lateral asymmetry of the construction. It seems that the loosening of the midspan cable band had a significant impact on the behavior of the bridge and in the end it resulted in the collapse.
Keywords:
stability; suspension bridges; torsional oscillations
Available in a digital repository NRGL
Stability of suspension bridges in lateral wind
The collapse of the original Tacoma suspension bridge has been studied in many papers. On 7 November 1940 around 10 a.m. the torsional oscillations appeared on the deck of the original Tacoma bridge ...
Geosite and geomorphosite assessment for geotourism purposes: a case study from the Vizovická vrchovina Highland, Eastern Moravia
Kirchner, Karel; Kubalíková, L.
2014 - English
Contribution deals with the problem of geodiversity, geoheritage and possibilities of their assessment for geotourism purposes. Geological, geomorphological and pedological sites are the most important resource for the geotourism activities. To find out which site can be used, it is necessary to identify, describe and assess various sites using a suitable assessment methodology. Based on the definition and concepts of geotourism and the assessment methods already used for geomorphosite assessment, authors propose five groups of assessment criteria. The method was used for assessing selected sites in the Vizovická vrchovina Highland.
Keywords:
geodiversity; numerical assessment; Outer Western Carpathians
Available in a digital repository NRGL
Geosite and geomorphosite assessment for geotourism purposes: a case study from the Vizovická vrchovina Highland, Eastern Moravia
Contribution deals with the problem of geodiversity, geoheritage and possibilities of their assessment for geotourism purposes. Geological, geomorphological and pedological sites are the most ...
Optimization methods for inverse problems with energy norm
Hrtus, Rostislav; Haslinger, Jaroslav; Blaheta, Radim
2014 - English
The paper deals with the application of the energy norm in the inverse problem which is based on a minimization of a nonlinear least squares function. Three different parameter distribution examples are solved by the steepest descent, nonlinear conjugate gradient and Newton methods. Efficiency comparison is also presented.
Keywords:
optimization methods; parameter distribution; Newton methods
Available in a digital repository NRGL
Optimization methods for inverse problems with energy norm
The paper deals with the application of the energy norm in the inverse problem which is based on a minimization of a nonlinear least squares function. Three different parameter distribution examples ...
Slightly generalized regular space decompositions
Kolcun, Alexej
2014 - English
Space decomposition methods represent an important part of numerical modelling process. In many applications it is suitable to use the simplest case of decomposition { regular rectangular grid: the whole raster graphic concept can be seen from this point of view. Dierent raster concept, based on regular hexagonal mesh, is analyzed e.g. in [18]. Generalized task { decomposition of the space to the set of the identical elements have been presented in various research areas since a long time, and it is connected with Hilbert's 18th problem [9], [10].
Keywords:
space decomposition methods; numerical modelling; discretization
Available in a digital repository NRGL
Slightly generalized regular space decompositions
Space decomposition methods represent an important part of numerical modelling process. In many applications it is suitable to use the simplest case of decomposition { regular rectangular grid: the ...
Geo-oriented mathematical modelling: multiphysics and multiscale
Blaheta, Radim
2014 - English
This contribution is aimed at a brief introduction to two important aspects of nowadays geo-oriented mathematical modelling: multiphysics and multiscale. Moreover, these types of modelling are illustrated on problems currently solved at the Institute of Geonics AS CR.The multiphysics means modelling of coupled physical phenomena. In the case of the geotechnical engineering, it is typically modelling of coupled thermo-hydro-mechanical (THM) processes, in other engineering branches, we can consider similar models, e.g. coupling of electric and mechanical phenomena. The modelling of coupled processes is particularly involved in modelling of sealing and plugging effects of bentonite barriers used in the design of underground repository of spent nuclear fuel. At present, the team at the Institute of Geonics is involved in the solution of Task A of the Decovalex 2015 project aimed at modelling in-situ SEALEX experiments, which were performed in Tournemire underground laboratory in France.
Keywords:
cyclic loading; thermal loading; dynamic loading; creep; underground opening; cyklické zatěžování; tečení
Available in digital repository of the ASCR
Geo-oriented mathematical modelling: multiphysics and multiscale
This contribution is aimed at a brief introduction to two important aspects of nowadays geo-oriented mathematical modelling: multiphysics and multiscale. Moreover, these types of modelling are ...
The history of measurement of rock mechanical properties at the Institute of Geonics AS CR
Konečný, Pavel; Blaheta, Radim
2014 - English
The rock testing and evaluation of parameters for description of rock behaviour is an important part of the research at the Institute of Geonics AS CR since its foundation as an independent institute of the Czechoslovak Academy of Sciences in 1982. Focusing on mechanical testing, the first testing device, the hydraulic press EDZ 100H made in GDR with maximum force 1000 kN, was acquired in 1980, when only a branch of the Mining Institute existed in Ostrava. This equipment was substantially extended in the eighties by two „small“ mechanical presses FPZ 100 (max. force 100kN) and FPZ 10 (max. force 10kN) purchased in 1987 from GDR. But a really great progress came with the mechanical press ZWICK 1494 (500 kN) controlled by computer with a possibility of recording and processing the data. This press was bought from ZWICK Ulm (FRG) in 1985. The deformation measurement was realized by the dial test indicators. The described equipment was used for rock testing with focus on elastic behaviour and uniaxial strength limits, which were required for solving engineering problems mostly related to the coal mining.
Keywords:
rock testing; measurement under uniaxial and triaxial loading; permeability tests; zkoušení; mechanické lisy
Available in digital repository of the ASCR
The history of measurement of rock mechanical properties at the Institute of Geonics AS CR
The rock testing and evaluation of parameters for description of rock behaviour is an important part of the research at the Institute of Geonics AS CR since its foundation as an independent institute ...
High performance computing in micromechanics
Blaheta, Radim; Hrtus, Rostislav; Jakl, Ondřej; Starý, Jiří
2014 - English
By micromechanics we understand analysis of the macroscale response of materials through investigation of processes in their microstructure. Here by the macroscale, we mean the scale of applications, where we solve engineering problems involving materials like different metals and composites in aircraft design or rocks and concrete in a dam construction. Different applications are characterized by different characteristic size. At macroscale the materials mostly look as homogeneous or they are idealized as homogeneous or piecewise homogeneous. A substantial heterogeneity is hidden and appears only after more detailed zooming view into the material.
Keywords:
analysis on CT scans; high resolution finite element solution; boundary value problems; solution of inverse problems
Available in a digital repository NRGL
High performance computing in micromechanics
By micromechanics we understand analysis of the macroscale response of materials through investigation of processes in their microstructure. Here by the macroscale, we mean the scale of ...
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