National Repository of Grey Literature 7 records found  Search took 0.00 seconds. 
Final research report to the project PB-2014-ZL-U2301-004-BUKOV
Souček, Kamil ; Vavro, Martin ; Staš, Lubomír ; Kaláb, Zdeněk ; Koníček, Petr ; Georgiovská, Lucie ; Kaláb, Tomáš ; Konečný, Pavel ; Kolcun, Alexej ; Králová, Lucie ; Kubina, Lukáš ; Lednická, Markéta ; Malík, Josef ; Martinec, Petr ; Ptáček, Jiří ; Vavro, Leona ; Waclawik, Petr ; Zajícová, Vendula
Bukov Underground Research Facility (Bukov URF) has been built as a test site to assess the properties and behaviour of the rock mass analogous to selected candidate sites. It is situated at a depth corresponding to the proposed storage depth of the final locality for the Czech Republic´s deep repository of high-level radioactive waste. Bukov URF is located in the Vysočina Region, the cadastral district of Bukov, approx. 3 km south-eastwards from the municipality of Dolní Rožínka. The underground research facility is placed approx. 300 m from the Bukov-1 shaft, namely on the level 12 of the shaft, at the depth of about 550 – 600 meters below the Earth’s surface. As for the regional geology, Bukov URF is found at the southern part of the Rožná uranium deposit, at the north-eastern edge of the Strážek Moldanubicum close to its contact with the Svratka Unit. The rock mass is composed of a relatively monotonous sequence of differently migmatized biotite gneisses to stromatic migmatites, continuing with amphibole-biotite to biotite-amphibole gneisses and amphiboles, with occasional fine intercalations of aplites, pegmatites or calc-silicate rocks (erlanes). Between 2013 and 2017 and within the complex geotechnical characterization of the Bukov URF, the Institute of Geonics of the Czech Academy of Sciences (Ústav geoniky AV ČR, v.v.i.) in Ostrava carried out a series of laboratory and field works in order to provide a detailed description of the geotechnical and geomechanical properties and quality of the rock mass. The works included the determination and assessment of the physical-mechanical properties of the rocks sampled from the walls, boreholes and ground surface in the locality, the determination of stress state and deformation properties of the rock mass using the methods of hydrofracturing of borehole walls, Goodman Jack and CCBO, or CCBM, determination of the rock mass quality based on selected index geomechanical properties, periodic, long-term strain-gauge measurements and convergence measurements, and the assessment of the effect of technical and mine-induced seismicity on the rock mass of interest. The implemented set of research works was supposed to render a sufficient and integral whole of geotechnical and geomechanical knowledge vital for the subsequent implementation of extensive research experiments focused on long-term safety and technical feasibility of the future national deep repository of radioactive waste.
Analytical analysis of twelve samples of back-up materials for the TESCO-TŘEBOVICE event with assessment of material susceptibility to volume changes
Martinec, Petr ; Ščučka, Jiří ; Ruppenthalová, Lucie ; Kubina, Lukáš ; Papcúnová, Renáta ; Krupíková, Miroslava
The research report contains an analytical analysis of twelve samples of the back-up materials at the TESCO-TŘEBOVICE event, assessing the susceptibility of material to volume changes.
Analytical analysis of samples of back-up materials from the event Ostrava-Dubina Sports Hall with assessment of material susceptibility to volume changes - PART II.
Martinec, Petr ; Kubina, Lukáš ; Ščučka, Jiří ; Papcúnová, Renáta ; Krupíková, Miroslava
The research report contains analytical analysis of samples of back-up materials from the Ostrava-Dubina Sports Hall event and assessment of material susceptibility to volume changes.
Analytical analysis of samples of back-up materials from the event Ostrava-Dubina Sports Hall with assessment of material susceptibility to volume changes - PART I.
Martinec, Petr ; Kubina, Lukáš ; Ščučka, Jiří ; Papcúnová, Renáta ; Krupíková, Miroslava
The research report presents the results of analytical analysis of samples of backfill materials from the Ostrava-Dubina Sports Hall event and the assessment of material susceptibility to volume changes.
Mineralogical and silicate analysis of steel work waste samples after expansibility and disintegration tests
Martinec, Petr ; Ščučka, Jiří ; Kubina, Lukáš ; Vavro, Leona
The report includes results of mineralogical and petrographic analyses of material samples of steel work waste after expansibility and disintegration tests.
Composition and properties of organic matter in freshwater clays of the lower Cenomanian ( Peruc Mbrs ) from the slope of Litice Chlum in Zamel , East Bohemia
Martinec, Petr ; Sýkorová, Ivana ; Havelcová, Martina ; Trejtnarová, Hana ; Šulc, Alexandr ; Kubina, Lukáš
The new finding of coal bearing kaolinite claystone in the Peruc Mbr occurring at the western hillside of Litice Chlum Hill in Zamel near Potstejn has contributed to expanding our knowledge of Czech Republic‘s Lower Cenomanian sediments. The petrographic and chemical investigation was focused on elucidating the composition of the fine-grained sediment and the origin of the organic matter present therein. However, the forms of organic matter preserved in the claystones bring evidence of the existence of an overlay of plant origin of which the residues may have been carried by water and wind to the vicinity of Lower Cenomanian riverbeds. The greater abundance of inertinite macerals coupled with the presence of semicoke representing the remains of incomplete combustion occurring during wildfires also documents the occurrence of polycyclic aromatic hydrocarbons and the distribution of n-alkanes exhibiting an unusual maximum.
Sandstones and conglomerates Peruc Mbrs (lower Cenomanian , Upper Cretaceous ) of eastern Bohemia and coal mass in them
Martinec, Petr ; Kubina, Lukáš ; Rojáková, T.
A reasonably complete knowledge of the development of East Bohemia’s Lower Cenomanian sediments (Peruc Mbr) is still lacking. The sediments originate from rivers flowing from the buried Hořice-Nové Město elevation to Moravia in the SE direction, via a flatland depression. The sandstone and conglomerate bodies within the Litice Chlum area under investigation are channel river sediments accompanied by sedimentation in river lakes or oxbow lakes. The landscape of the region showed the character of a low-relief peneplain. At Sopotnice site, the surface of Litice kaolinite massif of granodiorite with a weathered crust incorporates fine-grained conglomerates with white quartz and quartzite pebbles in a sandy matrix. They form wedge-shaped channel bodies of several dozens centimeters thickness. The textures are massive, with inconspicuous positive gradation bedding of medium to poor bed sorting. By their character they correspond to the fill of an instable riverbed that kept changing its position in the flatlands. In the matrix, kaolinite dominates over illite.

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