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Technological phase substructure - Business center in Ostrava
Toman, Jan ; Štěrba, Martin (referee) ; Henková, Svatava (advisor)
Subject of this thesis is the lower gross production technology mall in Ostrava. This work contains exactly technical reports, technological specification, site equipment, mechanical assembly design, scheduling, budgeting, monitoring and test plans, safety and environmental protection.
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Construction technological study of realization foundation of AZ Tower in Brno
Kořínková, Iveta ; Čech, David (referee) ; Diaz, Yvetta (advisor)
The thesis is concerned with project documentation for selected phase of building establishment of the highest building in the Czech Republic - AZ Tower in Brno. The object is the realisation of subterranean wall of reinforced concrete, drilling of piles and construction of fundamental plate. The project contains the technical report with orientation to the selected phase, technical report for construction-organisation principles and equipment of building yard, technological instruction for drilled piles, controlling and examining plan for this instruction, safety and risk plan on the building yard, proposal of machine order, budget of the projected phase, time-planning of the phase and all drawing concerning the problem.
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Vyhodnocení vlivu orby a hloubkového kypření na strukturu porostu a výnos zrna pšenice
Pokorný, Vít
This thesis deals with the effect of plowing and subsoiling on the structure of the spring wheat crop and the quality of spring wheat grain, as well as the effect of these two technologies on soil compaction. The literature review briefly describes basic information about soil and soil compaction, as well as necessary information about the plow and subsoiler and necessary information about spring wheat. In the practical part of this thesis, undisturbed soil samples were taken and evaluated, and the penetrometric resistance of the soil was measured, before and after tillage using the monitored technologies. Compaction has not been found. However, it was confirmed that subsoiling has a positive effect on the soil physical properties, despite the fact that there was no improvement in pentrometric resistance and soil moisture. Furthermore, the condition and structure of the spring wheat crop were evaluated, the results showed that at first plowing was better but before harvest subsoiling showed better plant density, and finally the yield and quality of the wheat grain were evaluated and compared. Plowing also came out better from this, despite the fact that subsoilling achieved a better number of plants and ears per m2. The field experiment took place in Jaroměřice nad Rokytnou in the local part of Vacenovice.
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Vliv konstrukce odhrnovaček na odpor pluhu
Opluštil, Adam
In the theoretical part, the construction of soil preparing machines is discussed, in particular the construction of ploughs is described and the construction of machines for minimizing soil preparing is also described. The practical part dealt with the investigation of two types of plough mouldboards. The first type of design is the standard mouldboard and the second type is the slatted mouldboard. The content of the work was, among other things, to determine which type of construction exerts more resistance on the whole plough. Pöttinger SERVO 45 M PLUS and SERVO 45 M PLUS NOVA ploughs were used for the measurements. Both ploughs were 4-radial reversible so that the results could be compared. A Zetor Forterra 150 HD tractor with a power of 95 kW (129,2 hp) was used as the tractive power source. The field measurement, which took place from 9 August to 11 August 2021, took place in the municipality of Sebranice u Skalice nad Svitavou. The approximately 10 ha of land where the measurements were carried out consisted of brown earth with a humus content of 2,5 %. Furthermore, measuring sections of 50 m length were marked out. During the measurements, data were collected on: time taken to pass the measuring sections, pulling power, fuel consumption, soil compaction and plough depth and width. Fuel consumption was measured with mass flow meters. To measure the specific resistance of the plough, the plough system was pulled by a second tractor. The tractor was a John Deere 8330 tractor with a power of 254 kW (330 hp). The connection between the two tractors was provided by a rope with an embedded Hottinger strain gauge force transducer that was placed in the hitch of the pulling tractor. The condition for calculating the plough resistance was to find the rolling resistance out, which was then subtracted from the tractive force. The results indicated that the average percentage difference between the specific resistances of the ploughs was almost 4,7 % with the standard mouldboard (68.47 kPa) having a higher specific resistance than the slatted mouldboard (65.40 kPa). This suggests that in heavier soils it is economically more advantageous to use a plough with a slatted mouldboard, which has less resistance.
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Analýza vlivu půdní injektáže na stabilitu a vitalitu stromů
Kyslík, Ondřej
The bachelor thesis deals with the influence of air injection on the stability and vitality of the tree. The measurement was performed on three individuals of the species Tilia cordata Mill. Based on the data measured using pulling tests, a safety factor was calculated for each tree before and after soil injection. No significant changes were observed among the safety factors, and it can be confirmed that in this case the air injection treatment had no influence on the stability of the examined trees.
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Průzkum půd z hlediska degradace půdní struktury a stavby s využitím penetrometrie pro vybranou oblast
POLAN, Tomáš
The diploma thesis deals with soil degradation, individual degradation processes and examines the soil structure in the selected area. Two research technologies were chosen for the processing of the work, one of them is the measurement of soil com-paction by pedometric means and the other is the analysis of soil samples taken using Kopecky rollers to determine the water retention capacity, porosity and aera-tion of the soil. In the selected area, two soil cultivation methods are compared with each other, soil cultivation technology with plowing and soil cultivation technology without plowing. At the end of the work, the results of the investigation will be summarized and procedures recommended for reducing degradation effects on the soil.
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Methodological tasks of livestock density in pastures and etological observation of cattle in pasture
PETRÁŠ, Marek
The aim of the bachelor's thesis is to design suitable ways of expressing the load of grazing areas and monitoring cattle during grazing with regard to the condition of pastures. These goals were achieved on the basis of one-year monitoring and analysis of pasture on the monitored pastures. At the same time, when monitoring the botanical composition of pastures, the behavior of cattle on pasture and its influence on pasture and soil compaction were monitored.
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Porovnání utužení půdy na zemědělském pozemku v závislosti na použité technologii jejího zpracování
MACH, Václav
The diploma thesis deals with the issue of soil degradation by compaction and with the influence of different method of cultivation on pedocompaction. It describes the problem of soil compaction, origin of this degradation, its impacts and whether it is possible to prevent the compaction or eliminate it afterwards. It also deals with description of measuring device which is able to find out the figures of penetrometric resistance of soil and its moistness. The thesis also closely describes individual work operations that have been done on the land. The tillage is analysed in detail because it is the system of cultivation that can highly influence the compaction. The most commonly used systems of soil cultivation are mentioned with their advantages and disadvantages. The experiment in the diploma thesis deals with the influence of soil compaction using different technology in its process. The field experiment took place on a trial field that was divided into two parts in terms of tillage. The first part was used for ploughing within three years and on the other ploughing was replaced by loosening. After collecting necessary data their evaluation took place. The figures of penetrometric resistance and soil moisture are summarized in tables and plotted in graphs for better interpretation.
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Comparison of plowing and no-till tillage
DOLEJŠÍ, Přemysl
This final thesis deals with the comparison of plowing and non-plowing soil tillage. It is divided into theoretical and practical part. The theoretical part describes soil properties and importance of soil cultivation. Following is a presentation and description of selected technologies of soil cultivation. The practical part presents the measurement results. It was investigated whether this or that technology was more cost-effective and how different processing would affect soil compaction. The results are presented for the sake of clarity through tables and graphs.
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Návrh přípravku k testování utužení půdy na univerzálním zkušebním stroji
BOČEK, Jan
The aim of the work was to produce a functional fixture for soil compaction testing on a universal testing machine. Above all, the question was whether the testing fixture could withstand the forces acting on the soil on a testing machine.In the theoretical part of the thesis is generally described soil compaction and how to prevent it. Further, there are described other instruments by which we can determine the soil firmness, from a simple spade test to more complex electronic instruments. This section also describes the universal testing machine.The practical part describes the production of the soil compaction test and the production costs are recorded in the table. The device is shown in the drawings for a better idea. The course of the experiment, individual measurements and repetitions are described. The results for better clarity are shown in the graphs.
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