National Repository of Grey Literature 14 records found  1 - 10next  jump to record: Search took 0.00 seconds. 
Design of weir reconstruction in Oslavany
Němcová, Denisa ; Smelík, Lukáš (referee) ; Uhmannová, Hana (advisor)
This diploma thesis deals with a design of the reconstruction of a smixed weir on the Oslava river in Oslavany town. The introduction describes the site of interest and the the occurrence of ice events. There are several types of fish ladders described theoretically. Further on in the thesis there is desribed the state of the objects on the flow and the state of the river basin in the area of interest of Oslava river. Next part of the thesis deals with the design of a movable baying structure (a hollow flap) and fish ladder type bypass channel. An impact assessment of the current and newly proposed weir on flow in the HEC-RAS program was carried out. The project also includes the basin adjustment in overweir and an evaluation of the stability of the newly designed construction.
River regulation with flood protection and revitalization
Kadrnoška, Jakub ; Smelík, Lukáš (referee) ; Duchan, David (advisor)
The diploma thesis focuses on the design of the flow adjustment, taking into account the flood protection and revitalization of the Leskava river. The first step is creating a computing model of a river section using the programme HEC_RAS. Based on results and the course, there is an adjustment proposed and the prevention of infiltrations in the intravilan.
Proposal for the nature friendly measures on the river Bobrava
Mláděnka, Jakub ; Smelík, Lukáš (referee) ; Uhmannová, Hana (advisor)
The aim of the diploma thesis is to describe and evaluate in detail the current state of the Bobrava river in the interest section – river kilometer 1,832-5,743. Part of the work is to assess the capacity of the river flow and the objects connected with it and find the class of an actual safety at village Zelesice. The calculation of the flow rate is performed by using the 1D mathematical model HEC-RAS for selected N-year flows. On the basis of the results of the flow rate, it is made the idea of natural freindly flood protection before the value of the 20-year flow. The result is two variants of river basin adjustment, when each one is leading to make Zelesice safer place and to improve the current state of the river Bobrava.
Proposal measures at upper reaches Svratka River
Klepárníková, Radka ; Smelík, Lukáš (referee) ; Uhmannová, Hana (advisor)
The diploma thesis deals with the proposal of measures on the Svratka stream in the cadastral area Český Herálec and Herálec na Moravě. The aim of the diploma thesis is to propose appropriate flood protection in the Herálec urban area and to elaborate proposals of nature friendly measures outside the municipality’s built up area, which will enable the renewal of the ecological functions of Svratka in the spring area. In the diploma thesis the assessment of the current state of the watercourse in the analyzed locality was caried out and also the assessment of the capacity of the watercourse and the objects on there. Furthermore, the flood levels and its areas were determined. Hydraulic water flow calculations were performed using the 1D and 1D/2D numerical model. For calculation, HEC-RAS 5.0.3 was used. When processing a 1D/2D numerical model, a manual describing the progress of work in the HEC-RAS 5.0.3 program was also created. On the basis of the results from the numerical model, a proposal for flood protection measures in the urban area and nature friendly measures in the extravilan was carried out.
Hydraulic assesment of river and design of flood protection
Pikna, Martin ; Smelík, Lukáš (referee) ; Duchan, David (advisor)
The bachelor thesis deals with the hydraulic analysis of the water flow of flood flow on the river Leskava from river station km 1,600 to river station 3,843 km. Hydraulic analysis was performed in the program HEC-RAS 5.0. using a combination of the flow of surfacewater in the 1D and 2D model. The calculation was carried out for the flow rates Q5, Q20, Q100. Bachelor thesis builds on the study to the General plan of the drainage of the city of Brno. In conclusion, on the basis of the resulting depths of the water and the size of the flood areas it was proposed to appropriate flood control measures in the form of idea flood protection.
Proposal of flood protection on the river in the basin of the Morava
Salingerová, Lucie ; Smelík, Lukáš (referee) ; Uhmannová, Hana (advisor)
The main aim of the thesis is an appraisal of the stream Oslava which belongs to the Náměšť nad Oslavou region with the focus on flood control of the town. The thesis asseses current state of the stream with respect to the state of riverbed, bulwark of the stream and evaluation of the capacity of the stream channel. Calculation water surface profiles have been made by usage of the 1D mathematical model HEC-RAS for selected N-year flows. The capacity of flows and objects in the given period has been detected. There is also a map of the water runoffs included and possible solutions of how to protect the area surrounding the stream are proposed. The thesis was complemented with hydroecological monitoring of the stream channel - the HEM analysis 2014.
Analysis of flood situation on selected part of river
Štěpánová, Markéta ; Smelík, Lukáš (referee) ; Duchan, David (advisor)
The thesis deals with an evaluation of flood situation at the area of the river Svitava in Brno throughout three different flows Q5, Q20 a Q100 and that proposes a possible solution for flood protection. Current state of the river stream is evaluated through hydraulic calculation combining 1D and 2D numerical modelling of flow rate with the use of HEC-RAS software.
Flow analysis of flood discharge at the selected location
Judas, Marek ; Smelík, Lukáš (referee) ; Duchan, David (advisor)
The bachelor thesis deals with analysis water flow at river Bečva from river station km 11,490 to river station km 18,053. Hydraulic analysis was done in program HEC-RAS 5.0. The calculation was performed for the flow of Q5, Q20 and Q100. These flows were calculated with 1D flow simulation and with combination of 1D and 2D flow simulation. In the area of interest was made conceptual design of flood protection based on computed depths of water and the flood areas. Depths of water and flood areas from calculation variants 1D and combination of 1D and 2D flow were compared.
Proposal of river training of a small watercourse in the basin of the Morava
Mlčochová, Zuzana ; Smelík, Lukáš (referee) ; Uhmannová, Hana (advisor)
The thesis is concerned with an appraisal of capacity of channel and design of suitable measures for environmental protection. Solved segment is located in the channel of Český potok in RK 0,000 – 6,366. The channel is flowing through villages of Čelechovice na Hané, Smržice a Držovice in solved segment. Within own solution the locality was divided into three partial sections, which is enabling clearer description of the proposed measures. Flood measures are proposed in several variants for each partial section. Calculations of flow capacity and water surface for the selected N-year flows were performed by using the program of HEC - RAS 4.1.0. Proposed solutions to flood measures are processed in the drawings documentation.
Design of methodology for determining roughness coefficient of open channels
Smelík, Lukáš ; Havlík,, Aleš (referee) ; Šoltész,, Andrej (referee) ; Uhmannová, Hana (advisor)
Determination of immeasurable parameter, the Manning’s roughness coefficient, is a complex problem of open channel hydraulics for more than 200 years. Now it doesn’t exists a method for determining an exact value of 1D roughness coefficient for computation water levels in watercourses. Doctoral thesis is focused for comparing different approaches to determine a roughness coefficient, especially for empirical equations. It were sought empirical equations, which are suitable for wide spectrum of water stages, types of bed material, channel shapes and channel dimensions. Selected equations were sorted on the base of two methods by the best values of medians and standard deviations of measured and computed values of roughness coefficients. Furthermore, it were compared qualities of roughness coefficient determination by tables, by photographic catalogs, CES software and by Cowan’s method, which has been extended and recalibrated. The computed values of roughness coefficients by those four methods were compared with values from own measurements in 27 locations in watercourses near of Brno and Frýdek-Místek. Also it were compared the grain size curves determined by sieving, by Wolman’s method and by Subjective estimation. Doctoral thesis is marginally focused for beginning of sediment movement, roughness coefficient of bedforms (dunes), grass and trees.

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