No (1149)
Yes (182)
Number of found documents:
1331
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Effects of abrasives during accelerated simulation of mechanical corrosion of cement composites using abrasive water flow
Hlaváček, Petr; Sitek, Libor; Klichová, Dagmar; Bodnárová, L.
2019 - English
The paper deals with the use of the abrasive water flow technology in an accelerated simulation of the process of mechanical degradation of surface layers of cement-based composites by flowing liquids. Effects of the abrasive particle size and the mass flow rate of abrasives in an abrasive water flow impacting on the surface of concrete samples have been studied. In addition, suitability of the application of the abrasive water flow for the simulation of real situation of the surface wear by flowing liquids has been evaluated.
Keywords:
cement-based composite; erosion; abrasion; cavitation; high-speed water flow; abrasive material
Available at various institutes of the ASCR
Effects of abrasives during accelerated simulation of mechanical corrosion of cement composites using abrasive water flow
The paper deals with the use of the abrasive water flow technology in an accelerated simulation of the process of mechanical degradation of surface layers of cement-based composites by flowing ...
Evaluation of fracture response of Silesian granite specimens via Effective Crack Model approach and finite element analysis
Malíková, L.; Vavro, Leona; Vavro, Martin; Keršner, Z.
2019 - English
The paper is focused on the advanced evaluation of fracture tests of selected rock specimens. Assessment of fracture response of chevron notch cylindrical specimens of Silesian granite subjected to three-point bending test was performed. The effective crack model is used and academic software chevroncylinder (author Petr Frantík) based on the finite element method is applied for the analyses. Based on the described procedures, estimation of maximum values of the effective fracture toughness are established and discussed.
Keywords:
granite; fracture test; chevron notch; load–displacement diagram; effective crack model
Available in digital repository of the ASCR
Evaluation of fracture response of Silesian granite specimens via Effective Crack Model approach and finite element analysis
The paper is focused on the advanced evaluation of fracture tests of selected rock specimens. Assessment of fracture response of chevron notch cylindrical specimens of Silesian granite subjected to ...
X-ray computed tomography analysis of four test specimens of concrete before and after the frost-resistance test
Souček, Kamil; Georgiovská, Lucie; Zajícová, Vendula
2018 - Czech
The non-destructive 3D X-ray computed tomography method was used to visualize the structure and baseline analysis of changes in the internal construction of two samples of concrete, four test bodies subjected to the frost resistance test. The analyzed samples were scanned on the Nikon Metrology XT H 450 2D / 3T CT Scanner. CT imaging was performed using CT Pro 3D software. The visualization, the preparation of tomographic sections, the analysis of the pore space and the measurement of the dimensions of the test of the bodies were elaborated in VGStudio MAX 2.2 software. Pro účely vizualizace struktury a základní analýzy změn vnitřní stavby dvou vzorků betonů, čtyř zkušebních těles, které byly vystaveny zkoušce mrazuvzdornosti, byla použita nedestruktivní metoda 3D rentgenové počítačové tomografie. Analyzované vzorky byly skenovány na RTG počítačovém tomografu XT H 450 2D/3T firmy Nikon Metrology. Zpracování radiografických projekcí do CT objemu bylo provedeno pomocí softwaru CT Pro 3D. Vlastní vizualizace, příprava tomografických řezů, analýza pórového prostoru a měření rozměrů zkušebních těles bylo zpracováno v softwaru VGStudio MAX 2.2.
Keywords:
X-ray computed tomography; concrete; frost-resistance test
Available at various institutes of the ASCR
X-ray computed tomography analysis of four test specimens of concrete before and after the frost-resistance test
The non-destructive 3D X-ray computed tomography method was used to visualize the structure and baseline analysis of changes in the internal construction of two samples of concrete, four test bodies ...
Obtaining data from the deep horizons of the Rožná mine - realization project of work
Švagera, O.; Bukovská, Z.; Souček, Kamil; Vavro, Martin; Waclawik, Petr; Sosna, K.; Havlová, V.; Zuna, M.; Jankovský, F.; Filipský, D.; Chabr, T.; Navrátil, P.; Mixa, P.; Soejono, I.; Laufek, F.; Kříbek, B.; Leichmann, J.; Zeman, J.
2018 - Czech
Realization project summarizes the planned work, its progress and continuity within the environment of Rožná I mine in the extent of the procurement „Získání dat z hlubokých horizontů dolu Rožná“ which is being compiled by Hluboké hluboké horizonty Rožná group. The final goal is to clarify the significance and spatial influence of major tectonic fault on surrounding rock mass. The results will help to clarify localization and safety issues of the potential deep underground repository, especially with respect to the Kraví hora locality. Realizační projekt prací shrnuje plánované práce, jejich postup a návaznost v rámci prostředí dolu Rožná I v rozsahu zadání veřejné zakázky „Získání dat z hlubokých horizontů dolu Rožná“ a zpracovávané Společností Hluboké horizonty Rožná. Cílem je objasnění významu a prostorového ovlivnění horninového prostředí přítomností významnější tektonické zóny pro účely lokalizace a bezpečnosti potenciálního umístění hlubinného úložiště.
Keywords:
Rožná uranium mine; brittle structure; horizon; locality; deep radioactive waste repository
Available at various institutes of the ASCR
Obtaining data from the deep horizons of the Rožná mine - realization project of work
Realization project summarizes the planned work, its progress and continuity within the environment of Rožná I mine in the extent of the procurement „Získání dat z hlubokých horizontů dolu Rožná“ ...
Assessment of the suitability of the site for the location of the SNF and RAW deep geological repository in terms of long-term safety - Dukovany - West site\n(EDU-Z).
Havlová, V.; Pertoldová, J.; Bukovská, Z.; Hroch, T.; Štědrá, V.; Jankovec, J.; Říha, J.; Červinka, R.; Černý, M.; Dudková, A.; Dušek, K.; Franěk, J.; Gondolli, J.; Gvoždík, L.; Hokr, M.; Holeček, J.; Hrdličková, K.; Jelének, J.; Jelínek, J.; Kachlíková, R.; Kaláb, Zdeněk; Klajmon, M.; Kolomá, K.; Královcová, J.; Kouřil, M.; Kryštofová, E.; Kučera, R.; Kunceová, E.; Maryška, J.; Milický, M.; Nývlt, D.; Ondra, P.; Pacherová, P.; Polák, M.; Rapprich, V.; Rukavičková, L.; Sedláčková, I.; Vašíček, R.; Vavro, Martin; Vopálka, D.; Uhlík, J.; Zeman, J.; Zeman, O.
2018 - Czech
This report summarises outline of a report for evaluation of the sites suitability for the emplacement of a deep geological repository on the basis of the archive information and the geological survey conducted from surface.\nSites are evaluated according to the following criterion categories\n1. Geological characteristics of the site\n2. Hydrogeologic characteristics of the site\n3. Transport characteristics of the the site\n4. Site stability\n5. Factors, increasing probability of human intrusion into the site\n6. Acceptability of enginnered barrier properties under site conditions Tato zpráva shrnuje dostupná data z lokality Dukovany-západ a hodnotí lokalitu podle kritérií odvozených pracovníky SÚRAO z požadavků SÚJB (vyhláška č. 378/2016 Sb., o umístění jaderného zařízení) a IAEA (NS-R-3 rev.1 Site Evaluation for Nuclear Installations Safety Requirements, IAEA 2016, SSG-14 Geological Disposal Facilities for Radioactive Waste, IAEA 2011b) na vlastnosti lokality, které mají vliv na dlouhodobou bezpečnost HÚ (MP 22 verze 3, Vokál et al. 2017). Lokality jsou hodnoceny podle následujících kategorií kritérií:\n1. Geologické charakteristiky lokality\n2. Hydrogeologické charakteristiky lokality\n3. Transportní charakteristiky lokality\n4. Stabilita lokality\n5. Faktory zvyšující pravděpodobnost intruze člověka do lokality\n6. Slučitelnost vlastností horninového masivu s inženýrskými bariérami
Keywords:
deep geological repository; long term safety; Dukovany–West; Třebíč pluton; Moldanubian zone
Available at various institutes of the ASCR
Assessment of the suitability of the site for the location of the SNF and RAW deep geological repository in terms of long-term safety - Dukovany - West site\n(EDU-Z).
This report summarises outline of a report for evaluation of the sites suitability for the emplacement of a deep geological repository on the basis of the archive information and the geological survey ...
Obtaining data from the deep horizons of the Rožná Mine
Bukovská, Z.; Bohdálek, P.; Buda, J.; Dobeš, P.; Filipský, D.; Franěk, J.; Havlová, V.; Chabr, T.; Knés, I.; Kryl, J.; Kříbek, B.; Laufek, F.; Leichmann, J.; Navrátil, P.; Pořádek, P.; Rosendorf, T.; Soejono, I.; Sosna, K.; Souček, Kamil; Šustková, E.; Švagera, O.; Vavro, Leona; Vavro, Martin; Veselovský, F.; Waclawik, Petr; Zuna, M.
2018 - Czech
This report summarizes the work and partial results made under the Public Procurement Obtaining Data from the deep horizons of the Rožná Mine in the first phase of the third and fourth subdivisions from February to November 2018. These are in particular technical works (boreholes, access to corridors),seismic measurements, sampling for laboratory analysis (physical-mechanical properties of rocks, breakage fills, bearing revalidation), structural characterization of the rockanalytical work on all samples taken. Parallel to these works3D models are being prepared, especially data preparation for modeling. Tato zpráva shrnuje práce a dílčí výsledky provedené v rámci veřejné zakázky Získání dat\nz hlubokých horizontů dolu Rožná v první etapě třetího a čtvrtého dílčího plnění od února do\nlistopadu 2018. Jedná se zejména o technické práce (provedení vrtů, zpřístupnění chodeb),\ndále seismická měření, odběr vzorků pro laboratorní analýzy (fyzikálně mechanické vlastnosti\nhornin, zlomové výplně, ložisková revalidace), strukturní charakterizace horninového\nprostředí, dále analytické práce na všech odebraných vzorcích. Souběžně s těmito pracemi\nprobíhá příprava 3D modelů, zejména příprava dat pro tvorbu modelů.
Keywords:
deep horizons; Rožná Mine; physical-mechanical properties of rocks
Available at various institutes of the ASCR
Obtaining data from the deep horizons of the Rožná Mine
This report summarizes the work and partial results made under the Public Procurement Obtaining Data from the deep horizons of the Rožná Mine in the first phase of the third and fourth subdivisions ...
Assessment of site suitability for the placement of the SNF and RAW deep geological repository in terms of long-term safety - locality Hrádek\n
Havlová, V.; Pertoldová, J.; Bukovská, Z.; Baier, J.; Hroch, T.; Štědrá, V.; Říha, J.; Červinka, R.; Černý, M.; Dudková, I.; Dušek, K.; Franěk, J.; Gondolli, J.; Gvoždík, L.; Hokr, M.; Holeček, J.; Jelínek, J.; Kachlíková, R.; Kaláb, Zdeněk; Klajmon, M.; Kolomá, K.; Kouřil, M.; Královcová, J.; Kučera, R.; Kunceová, E.; Maryška, J.; Milický, M.; Nývlt, D.; Ondra, P.; Polák, M.; Rapprich, V.; Rukavičková, L.; Steinová, J.; Svoboda, J.; Šír, P.; Švagera, O.; Uhlík, J.; Vašíček, R.; Vavro, Martin; Vopálka, D.; Zeman, J.
2018 - Czech
This report summarises outline of a report for evaluation of the sites‘ suitability for the emplacement of a deep geological repository on the basis of the archive information and the geological survey conducted from surface.\nSites are evaluated according to the following criterion categories\n1. Geological characteristics of the site\n2. Hydrogeologic characteristics of the site\n3. Transport characteristics of the the site\n4. Site stability\n5. Factors, increasing probability of human intrusion into the site\n6. Acceptability of enginnered barrier properties under site conditions Cílem této zprávy je shrnout dostupná data z lokality Hrádek a hodnotit lokalitu podle kritérií odvozených pracovníky SÚRAO z požadavků SÚJB (vyhláška č. 378/2016 Sb. o umístění jaderného zařízení) a IAEA (NS-R-3 rev.1 Site Evaluation for Nuclear Installations Safety Requirements, IAEA 2016, SSG-14 Geological Disposal Facilities for Radioactive Waste, IAEA 2011b) na vlastnosti lokality, které mají vliv na dlouhodobou bezpečnost HÚ (MP22 v3, Vokál et al. 2017):\n1. Geologické charakteristiky lokality\n2. Hydrogeologické charakteristiky lokality\n3. Transportní charakteristiky lokality\n4. Stabilita lokality\n5. Faktory zvyšující pravděpodobnost intruze člověka do lokality\n6. Slučitelnost vlastností horninového masivu s inženýrskými bariérami
Keywords:
deep geological repository; long term safety; Moldanubian zone; siting
Available at various institutes of the ASCR
Assessment of site suitability for the placement of the SNF and RAW deep geological repository in terms of long-term safety - locality Hrádek\n
This report summarises outline of a report for evaluation of the sites‘ suitability for the emplacement of a deep geological repository on the basis of the archive information and the geological ...
Structural mapping of exploration boreholes walls within first phase - Safety boreholes for Boxcut
Waclawik, Petr; Souček, Kamil; Vavro, Martin; Kukutsch, Radovan; Ram, S.
2018 - English
Structural-geological analysis, i.e. core fracturing assessment within the boxcut safety\nborehole was carried out on the basis of optical televiewer record evaluation. In general,\noptical televiewer (OPTV) probe provides a continuous, unwrapped, high-resolution digital\n360° image of the borehole-walls oriented towards the cardinal points. This technique\nprovides information about the strike, dip direction, dip angle and depth of foliation, bedding\nplanes and fractures, as well as the frequency, aperture and infillings of fractures. Information\nabout spatial characteristics of structural elements is one of its indisputable advantages and\nallows for subsequent statistical evaluations.\nThe structural mapping of boreholes of Boxcut safety boreholes were carried out within the\ncontract of IG CAS (Contract No. D/18/156/00) GEOMET, s.r.o. (as a customer, contract No.\n01/2018). The aim of the contractual research was the realisation and interpretation of the\nfractures by digital logging of boreholes walls.
Keywords:
boreholes; structural mapping; rock quality
Available at various institutes of the ASCR
Structural mapping of exploration boreholes walls within first phase - Safety boreholes for Boxcut
Structural-geological analysis, i.e. core fracturing assessment within the boxcut safety\nborehole was carried out on the basis of optical televiewer record evaluation. In general,\noptical televiewer ...
Monitoring of ecosystems in the area of mining and processing of uranium ores near Rožná and in the Bukovský potok basin in 2018
Lacina, Jan; Halas, Petr
2018 - Czech
The study was prepared on the basis of a contract of work from 14.12.2017 for the client DIAMO, s., Of GEAM in Dolní Rožínka. According to this agreement, this year's follow-up follows similar research work from 1998 to 2017, focusing in particular on the repeated examination of vegetation in the form of phylocenological pictures on the test areas defined in previous years, and special attention is again paid to the avifauna of anthropogenically conditioned habitats of the K1 and K2 ponds. In addition, the monitoring of the status of biotopes of ecologically important landscapes was carried out with regard to their potential impact on the activities of the uranium industry. The field survey was conducted between mid-January and mid-November 2018. Studie byla zpracována na základě smlouvy o dílo z 14.12.2017 pro objednatele DIAMO, s. p., o. z. GEAM v Dolní Rožínce. Podle této smlouvy letošní monitoring navazuje na obdobné výzkumné práce z let 1998 - 2017, přičemž se soustřeďuje zejména na opakované šetření vegetace formou fylocenologických snímků na testovacích plochách vymezených v minulých letech, zvláštní pozornost je opět věnována avifauně antropogenně podmíněných biotopů odkališť K1 a K2. Dále bylo realizováno sledování stavu biotopů ekologicky významných egmentů krajiny s ohledem na jejich případné ovlivnění aktivitami uranového průmyslu. Terénní šetření jsme prováděli v období od poloviny ledna do poloviny listopadu roku 2018.
Keywords:
vegetation; disturbantion; mining area
Available at various institutes of the ASCR
Monitoring of ecosystems in the area of mining and processing of uranium ores near Rožná and in the Bukovský potok basin in 2018
The study was prepared on the basis of a contract of work from 14.12.2017 for the client DIAMO, s., Of GEAM in Dolní Rožínka. According to this agreement, this year's follow-up follows similar ...
Cultural heritage and geodiversity of landforms in the landscape of the Archdiocese of Olomouc
Kirchner, Karel; Kuda, František; Kubalíková, Lucie; Havlíček, M.; Machar, I.; Pechanec, V.
2018 - English
Within the framework of the NAKI II project – Cultural heritage of landscape of the Archdiocese of Olomouc - research, presentation and management (DGB 16P02B014), we focus on the results that will contribute to the sustainable development of regional cultural identity through applied cultural heritage research in the cultural landscape of the area of interest. As part of the material cultural heritage, we include the landforms that originated from the conscious activity of man - the anthropogenic relief forms. These landforms complement the geodiversity of the landscape and are referred to as secondary geodiversity. Therefore, their identification and interpretation will make it possible to complement and enhance the diversity of cultural heritage and to specify the development of the cultural landscape. The first results from the area of Central Moravia will be presented with the using of the historical maps, the digital model of the relief DMR5G and the field research.
Keywords:
cultural heritage; secondary geodiversity; Archdiocese of Olomouc
Available at various institutes of the ASCR
Cultural heritage and geodiversity of landforms in the landscape of the Archdiocese of Olomouc
Within the framework of the NAKI II project – Cultural heritage of landscape of the Archdiocese of Olomouc - research, presentation and management (DGB 16P02B014), we focus on the results that will ...
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