National Repository of Grey Literature 71 records found  beginprevious62 - 71  jump to record: Search took 0.00 seconds. 
Assessment of dam safety during the floods
Hala, Mario ; Jandora, Jan (referee) ; Říha, Jaromír (advisor)
The Diploma thesis deals with the safety assesment of the small water reservoir Bartošovice III during the floods, according to requirments of TNV 75 2935 (technical standard). First two chapters are devoted to the description of the dam purpose. Following chapter deals with the summary of basic information and documentation, including hydraulic analysis. In the following section maximum permissible safe water level is determined together with the maximum check flood water level in reservoir which reflects the flood wave transformation. In the final evaluation the comparison of the maximum permissible safe water level with maximum check flood level is carried out. At the end of the thesis recommendations leading to ensuring of reliability and safety of water reservoir are listed.
Mathematical modelling of wind waves
Bendová, Gabriela ; Golík, Pavel (referee) ; Jandora, Jan (advisor)
The work deals with mathematical modeling of wind waves on water reservoirs and their effects on different types of slopes. The research work was carried out using a vast array of available literature written on this topic in the Czech Republic and partly abroad. And we also deal with the hydrodynamics problems, creating mathematical and numerical model Further simulations were created in two numerical models. Simulations were created in two programs FLOW-3D and DualSPHysics. Vast variety of situations was created in DualSPHysics program because it seems more appropriate for modeling of this situation. It was created twenty-seven simulations and their results are compared with results coming from valid Czech standard ČSN 75 0255.
Study of flood routing of extreme flood with emergency spillway of the Nové Mlýny dam
Slavětínský, Radek ; Rainer, Vít (referee) ; Jandora, Jan (advisor)
This diploma thesis deals with reliability assessment of the Nové Mlýny dam during flood routing of extreme flood with emergency spillway. Capacity of current emergency spillways was assessed and flood routing for theoretical flood waves was examined. Results showed insufficient capacity of the spillway for routing of 10 000 year flood. Therefore variants of corrective measures leading to reliability increase were proposed.
Study of Possibility to Build Small Dams near Vyškov
Richter, Štěpán ; Žatecký, Stanislav (referee) ; Jandora, Jan (advisor)
This thesis deals with the design of small reservoirs at Vyškov na Moravě. Projected reservoirs’ dams are earth-fill and homogenous and each one is equipped with the bottom water outlet and the emergency spillway. The first reservoir, located on the tributary of the Drnůvka river, has the fountain type emergency spillway and the feed pipe bottom water outlet. The reservoir of the Merchanice river, situated at the Vyškov airport, is equipped with the lateral emergency spillway and the feed pipe bottom water outlet. The third design is the reconstruction of the Marchanka reservoir projecting the dam raise. For this small reservoir two variants of functional installations were elaborated.
Numerical Modelling of Flow over Spillway in Small Dams
Vaněk, Jakub ; Roth, Tomáš (referee) ; Jandora, Jan (advisor)
The master´s thesis deals with the numerical modeling of flow in the emergency spillways of small dams. It is solved the flow rate capacity of a weir and of spillway called „duckbill-type“. Sharp crested weirs and long crested weirs are modeled using numerical simulations in ANSYS. Hydraulically complex spillway called „duckbill-type“ was modeled in the Flow-3D. The results of the discharge coefficients are compared with data in the hydraulic literature.
Safety Assesment of the Ostrov nad Oslavou Dam during Floods
Holinka, Matouš ; Holomek, Petr (referee) ; Jandora, Jan (advisor)
This Bachelor's thesis deals with the small water reservoir Ostrov nad Oslavou and its assessment with regard to the passage of the flood wave. Drawing takes place according to the requirements TNV 75 2935 (technical standard). In the first chapters we gradually describe the purpose of the water structure. In the following chapters we summarize the basic data, documents and values, including description of hydraulic calculations. Followed by analyzing of the maximum permissible safe water level and then setting of the maximum check flood water level in the reservoir as a result of transformation of the flood wave. In the final chapter there is a comparison of those two levels, their evaluation and recommendations. These measures are designed to ensure the safety and reliability of the water structure.
Failures and Rehabilitation of Embankment Dams in the Czech Republic
Hošková, Lucie ; Miča, Lumír (referee) ; Jandora, Jan (advisor)
Protective embankments are providing function of detention water during floods. Like any other building is connected with some risk of violation. The failure of a dam is creating a flood wave, which is dangerous for area behind the dam. In my bachelor´s thesis I have written down any failure at protective embankment in Czech Republic and how to prevent them.
Evaluation of Flood Protection of Újezd u Brna
Lehotská, Lívia ; Jelínková, Iva (referee) ; Jandora, Jan (advisor)
The aims of the bachelor thesis is evaluation of flood protection of town Újezd u Brna and propose the increase levees of the Litava river or reduction levees under the city and realize the water from the river to inundation. The thesis will be transferred to the calculation using the HEC - RAS. The conclusion will be evaluated both proposals for protecting the city.
Numerical Modelling of Energy Losses in Pipes
Kacálková, Eva ; Golík,, Pavel (referee) ; Jandora, Jan (advisor)
The bachelor´s thesis deals with numerical modelling of energy losses in pipes in 2D. It shows the process of creation of mathematical model, used mathematical equations and numerical methods of their solution. The theory is applied on the creation of pipe model and their energy losses.
Small Embankment Dam Jandovka in Vyškov
Vaněk, Petr ; Krejčí, Vlastimil (referee) ; Jandora, Jan (advisor)
The Bachelor´s Thesis analyses the importance of the flood protection on the Jandovka pond the in Vyškov na Moravě. It also contains the calculation of the basic object manipulation of this water reservoir and using them to draw up the management handling order. The thesis also includes the hydraulic calculation of the flow capacity of the Drnůvka stream and its ability to del with N-year flows.

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