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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Slope movement analysis in the northwestern part of the Příhrazská plošina platform and evaluation of sandstone properties relative to the stability situation
 Vorlíček, Petr ; Blahůt, Jan (advisor) ; Vařilová, Zuzana (referee)
The Northwestern part of the Příhrazská platform is known for its processes, the first scientifically studied movement occurred here in 1926 and had catastrophic consequences. This work deals with the evaluation of the selected continuous slope movements in the north- western part of Příhrazská platform and builds on previous measurements. The measured movements are compared with meteorological data, with the surrounding hydrogeological borehole data, and compared with other monitoring site in the vicinity. In the second part, the work focuses on clarifying the problem of the increased susceptibility of the monitored rock tower for weathering and comparison of the properties of sandstone material from this tower with surrounding sandstones from the vicinity and other localities. Attention is especially paid to the influence of the biological crusts, whose significant influence is confirmed. For the investigation field and laboratory methods were used in combination with the use of computer programs.
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Analysis of slope deformation from the Mužský hill, Příhrazská plošina plateau
 Pantůčková, Klára ; Blahůt, Jan (advisor) ; Lešner, Jeroným (referee)
This thesis is dealing with analysis of landslide on the eastern hillside of the Mužský hill, which lies on the Příhrazská plošina Plateau in Český ráj. Příhrazská plošina Plateau belongs to areas, where landslides occur very often and it is well known for a destructive landslide at Dneboh village in 1926. Landslide under the Mužský hill originated on hillside of a Tertiary volcano, which penetrated Cretaceous sandstones and claystones. That distinguishes it from other landslides in the area. Geophysical method of electrical resistivity tomography was used for finding landslides slip surface. Due to small resistivity contrast between landslide mass and underlying claystones, it was not able to identify slip surface with high certainty. The results show only some indications of it. The geophysical exploration however, proved that the landslide mass is overlaying originally exposed sandstone blocks in the accumulation part of the landslide. The whole area of the landslide was mapped into engineering geology map of slope stability at 1:2000 scale with the help of GPS. Slope map on the basis of digital model terrain acquired from LiDAR measurements was used, as a basis of new map. This slope map provided more information about older landslides around examined landslide. From results of the mapping was...
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