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Development of wood-based board materials applying thermal modification process
Buriánek, Vlastimil ; Pipíška,, Tomáš (referee) ; Vaněrek, Jan (advisor)
This diploma thesis deals deals with the effectiveness of polyurethane and phenol-resorcinol-formaldehyde adhesives when applied in bonded joints of thermally treated sheet materials. The thermal resistance of commercially used adhesives was analysed as part of a research activity. Furthermore, the changes in the properties of wood materials after heat treatment were described. In the practical part, the effectiveness of the used adhesives on densified birch plywood was verified with respect to the shear strength of the resulting composite. Based on the results obtained, it was proceeded to verify the effectiveness of densification on spruce plywood.
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Analysis of the landslide area on the Odlezelské lake
Sachr, David ; Jerman, Jan (advisor) ; Roháč, Jakub (referee)
This thesis deals with the analysis of landslide areas in the vicinity of Odlezelské Lake, which is located in the western Limnic Permocarboniferous basin of the Žihel Basin. In this area, slope movements are not a frequent natural phenomenon. In the Czech Republic, this is the only slope deformation that has created a 'landslide lake' due to the damming of the Mladotický stream, which flows through this area. The geological conditions play a fundamental role here - the overlying strata consist mainly of arkosic sandstones, sandstones and siltstones. Layers of clay or claystone lie 20-30 metres below the ground surface and the average slope of the layers in the area is 10ř to the north-west, very close to the average slope in the landslides studied. An engineering geological analysis of the landslide areas in the area of Lake Odlezel was carried out. The area was depicted using LiDAR and DMR 5G in QGIS software and thus new morphological maps of the landslide areas were created. Data from the ČÚZK and 48 years old geomorphological maps, which were mapped by Prof. Janský, were used as a basis. Furthermore, a supplementary field survey was carried out, on the basis of which, in combination with LiDAR analysis, the contours of slope deformations of the previous authors were refined. Furthermore,...
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Data processing of well log complex
Hanák, David ; Procházka, Martin (advisor) ; Kobr, Miroslav (referee)
This thesis is focused on the problem of the determination of shear surfaces of slope instabilities (including fossil ones) from the results of the complex of logging methods. It describes the steps taken during data measurement, processing, and interpretation. All the data comes from the measurements conducted in the boreholes carried out for the geotechnical survey of the sliding area in the immediate proximity of the D8 highway or measurements in a well from the Děčín-Loubí locality. On the second mentioned locality, due to a different well construction, a more extensive logging complex could be carried out. After locating shear surfaces in a slope instability, a comparsion was made to determine whether the results in neighboring boreholes corresponded to each other, and to evaluate which methods (or combination of methods) suits best for the task.
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Data processing of well log complex
Hanák, David ; Procházka, Martin (advisor) ; Kobr, Miroslav (referee)
This thesis is focused on the problem of the determination of shear surfaces of slope instabilities (including fossil ones) from the results of the complex of logging methods. It describes the steps taken during data measurement, processing, and interpretation. All the data comes from the measurements conducted in the boreholes carried out for the geotechnical survey of the sliding area in the immediate proximity of the D8 highway or measurements in a well from the Děčín-Loubí locality. On the second mentioned locality, due to a different well construction, a more extensive logging complex could be carried out. After locating shear surfaces in a slope instability, a comparsion was made to determine whether the results in neighboring boreholes corresponded to each other, and to evaluate which methods (or combination of methods) suits best for the task.
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