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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.
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Traffic lanes merging analysis and possible improvement measures
Mikolášek, Igor ; Ščerba, Marek (referee) ; Holcner, Petr (advisor)
The presented thesis deals with lane merging at lane drops. The theory of traffic flow is briefly introduced and put into the perspective of lane merging. Forming of queues at lane drops, the capacity drop and traffic flow behaviour at lane merging is explained. A review of existing measures at lane drops at work zones and elsewhere is provided. Measurements of traffic flow from three different locations are presented. The locations are introduced, the methods used for analysis of the data are explained and the results are provided and discussed. The capacity drop is confirmed and the first proof of concept of the later introduced metering system is presented. The behaviour of the merging drivers was found to have a significant influence on the merging capacity during congestion. Further, an overview of existing applications of traffic light in traffic flow control is provided and ramp metering and mainstream metering is explained. The new metering system for lane drops is presented including several possible modifications and extensions. Finally, the proposed metering system is tested in microsimulation software Aimsun. The simulations further confirm the viability of such systems. It brings significant capacity improvements and consequently even greater improvements of delays and travel times due to shorter queues.
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Revitalization of the selected section of the watercourse
Šmídová, Hana ; Ošlejšková, Kateřina (referee) ; Šlezingr, Miloslav (advisor)
This study solves revitalizing proposal of selected section of river Kuřimka in km 0,212 to 0,312 in the cadastral Kníničky. Work is focused on assessing the current state, capacity assessment and subsequent design of revitalization using extension space for sedimentation. Calculations of flow capacity were performed using HEC-RAS 5.0.0. The assessment was made based on my own errand, remeasurement and photographic documentation. The work also includes a proposal of riparian vegetation and drawings.
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Regulation of Hartmanice River
Samková, Aneta ; Gernešová, Lenka (referee) ; Šlezingr, Miloslav (advisor)
This bachelor thesis deals with the assessment of the current condition of the part of Hartmanice stream and his vegetation accompaniment. Stream flows through the Hartmanice village in Pardubice region. Designed stretch begins in the R.K. 1,080 – 1,662. Assessment of the current condition is based on the personal perambulation, the personal geodetic survey plus photographs. In this thesis are designed the possible variants of stabilization of the river banks and completion of vegetation accompaniment. The capacity of the flow is counted by the HEC – RAS program. Drawings are created by the Auto - CAD program.
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Application of Doppler ultrasound system to detection of significant venous insufficiency
ADAMCOVÁ, Jaroslava
The measuring of blood flow capacity with ultrasound devices is important diagnostical method. For measuring characteristics of blood flow in vessel, we{\crq}re using today almost in all cases the doppler ultrasound systems. This work dealed with use of this system and measuring a vessel flow capacity of patients suffering from chronical venous insufficiency Chronical venous insufficiency and varicose veins related to it, belongs to civilization diseases. For examination that uses a Doppler ultrasound system you need a special examination room for each device. It is therefore usable to deal with less expensive and more compact devices for screening and detection of serious venous insufficiency. In this work we{\crq}ll examinate the usefulness of Doppler vessel system HiDop 300.
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Assessment of runoff conditions on the water flow Luha
Urbánková, Olga ; Niklová, Věra (referee) ; Uhmannová, Hana (advisor)
Diploma thesis deals with the assessment of runoff conditions on the water flow Luha in the river kilometer 8,120 – 13,900. The river flows in the urban area of Polom and undeveloped area of Polom and Heřmanice. The thesis is focused on an assessment of the condition of the riverbed, capacity of the river and on design of a flood protection. The thesis includes an assessment of the condition of fishponds. The assessment is based on personal visit and photos taken as record. Program HEC-RAS was used to calculate the water levels. The outcome is an evaluation of the river condition according to a method HEM and design of the flood protection.
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Influence of biochar on saturated hydraulic conductivity of contaminated fluvisol
Tomáš, Tomáš ; Jačka, Lukáš (advisor) ; Pavlásek, Jiří (referee)
This thesis deals with the influence of biochar on saturated hydraulic conductivity (Ks) of contaminated fluvisol. Values of Ks are key inputs for modeling of water flow in soils. Contaminated fluvisol and this soil enriched by 2 and also 5% of biochar were studied in this thesis. These differently treated soils ware gauged to find out differences in Ks and changes of Ks time. Biochar improves sorption capacity and other soil properties. The influence of biochar application on Ks it not fully revealed. We used biochar which was made by pyrolysis of stalks of grapevine.
Measurements were made in two series since October to December in 2015. For both series, 10 samples, (5 in reference and 5 enriched by biochar) were measured. A total of 20 samples were measured in each series. Every sample was measured for 14 days in 10 time steps (10 recurrent measurements). Physical properties (bulk density, porosity, saturated water content) and particle size analysis using hydrometer method were also measured. Homogeneous soil mixtures of the soils were packed in Kopeckého sampling rings (100 cm3). In first series, 5 reference samples and 5 samples with 2% content of biochar were compared. Saturation of the samples was made gradually and slowly and takes 1 week. Measurement was made by laboratory permeameter (hydraulic gradient about 0.5).
For reference samples of first series, mean Ks value was 4,818.10-6 m.s-1. For samples enriched by 5% biochar mean Ks value was 2,254.10-6 m.s-1. For reference of second series, mean Ks value was 6,435.10-6 m.s-1. For samples enriched by 2% biochar mean Ks value was 4,211.10-6 m.s-1.
Application of biochar on tested soil decrease Ks in comparison with reference soil. Decrease of Ks value was more distinct for soil enriched 5% of biochar than for soil enriched by 2% of biochar. Application of biochar also decrease coefficient of variation of measured Ks. in most of the time steps. Reference samples exhibited larger differences of Ks among time steps than biochar enriched soils.
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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.
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