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River regulation with regard to the flood protection and revitalization
Vojtasová, Simona ; Kotaška, Stanislav (referee) ; Duchan, David (advisor)
This bachelor's thesis deals with the assessment of the capacity of the existing river Svratka in the area of interest between Rajhrad and Židlochovice at km 28,927 to km 34,942. The assessment was performed based on a hydraulic 1D model in the HEC -RAS calculation program. According to the results, improvement of the capacity of the river channel and flood control measures were proposed to protect nearby urban areas from dangerous flood damage.
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Actions on bridges caused by the water flow and floating items
Řezník, Jindřich ; Duchan, David (referee) ; Špano, Miroslav (advisor)
The subject of this thesis is the enumeration and analysis methods applicable to the calculation of loads on bridges from water and water-borne objects. It involves a hydrodynamics loads, loads from captured debris and from impacts of the individual water-borne objects and their clusters. It includes an assessment of the current situation, the teoretical analysis and model calculations on the concrete bridge with the evaluation of usable methods.
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Possibilities of banks stabilization of Desná watercourse
Lach, Radek ; Duchan, David (referee) ; Uhmannová, Hana (advisor)
The thesis includes the assessment of the current state of the Desná watercourse in the cadastral area of Velké Losiny and the subsequent suggestion of the remediation of two solves sites in the solved area.The river falls under the management of Povodí Morava, s.p. and for the most part it flows through built-up area of Maršíkov. To assess the current state of the river bed, a personal tour of the area of interest was conducted, during which everything was digitally documented. To determine the river bed capacity and calculate the progress of individual levels with the inclusion of all existing objects on the flow in the solved section, the 1D program HEC-RAS was used. Level flow calculation was made for one-year, five-year and capacity flow. Based on the literature search, measures were proposed to remediate bank erosion in locality 1 and locality 2. In these locations, an ideological nature-friendly measures in the river bed were proposed.
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Proposal of measures on Hodonínka river
Ondrišík, Ivan ; Duchan, David (referee) ; Uhmannová, Hana (advisor)
The content of this bachelor's thesis is focused on assessing the condition of the riverbed of a river Hodonínka, which flows through the built-up area of the village of Olešnice, Křtěnov and the vacant area of the village Crhov. The assessment includes an assessment of the current condition of the riverbed and the condition after adjustments with the proposed flood control measures. The proposed modifications are supposed to ensure the protection of parts of municipalities against twenty years of water Q20 = 16,74 m3/s. The section of interest of the stream is located on the river kilometre 13,018 - 14,638 and extends into three cadastral areas. The mathematical model HEC-RAS 5.0.7 is used for hydro-technical calculations, which works in a 1D environment.
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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.
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River regulation with regard to the flood protection and revitalization
Rychlý, Patrik ; Pospíšilík, Šimon (referee) ; Duchan, David (advisor)
The bachelor's thesis is focused on the design of a suitable variant for the millrace revitalization of the Chrudimka river and the construction of a flood protection park in the urban area of the town of Chrudim. Within the thesis, first the current state of the solved locality is described, then three variants of a possible solution are proposed with regard to the limits of the given area. From the proposed variants the most suitable one is selected, which, with its processing, follows on from the already revitalized stream in the adjacent park. The selected variant for the given area is elaborated in more detail. As part of the processing, a 1D hydraulic model is created, which is compared with the hydraulic model of the current state. The thesis can serve as a basis for a possible realization of such project.
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Reconstruction of gate weir on the river Bystřice in Kunčice
Svatoš, Petr ; Neumayer,, Oldřich (referee) ; Duchan, David (advisor)
This thesis is about reconstruction of existing floodgate weir on the river Bystřice in river km 17,650. In actual state (2017) there is floodgate weir with four independent flow fields. This construction is inappropriate in the locality due to the capture of floating debres on the guiding profiles of the weir boards at higher flows, which reduces the flow capacity of the weir profile and consequently the flow over banks of the river Bystřice into the village of Kunčice. As a solution, the reconstruction was chosen as a movable structure with automatic water level control – rubber weir. This proposal is then compared to the previous investor's proposal on the economic, hydraulic and operational aspects.
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Assessment of status of the watercourse in the basin of the Povodi Dyje
Janovská, Michaela ; Duchan, David (referee) ; Uhmannová, Hana (advisor)
This thesis was aimed at assessing the capacity of the current state of the river Oslavany in the urban area Oslavany. Weighted section is located near the football field and a castle, which was built in 1225 and in case of passing 100 - year flood is the flood area. Assessment of the capacity of the stream was performed using the 1D mathematical program HEC- RAS in which based on oriented transverse profiles and beats in the field, the flow model was developed and assessed for the indi-vidual N-year flows. Based on the results of the program HEC- RAS was conducted conceptual design of flood protection measures in the area of interest.
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Design of flood protection
Rajnoch, Dalibor ; Smelík, Lukáš (referee) ; Duchan, David (advisor)
The diploma thesis copes with the evaluation of status quo and further proposal for a flood control arrangements for the river Dřevnice (Zlín district). The evaluation as such has been made by the hydraulic calculation of flow alongside 2D numeric model - SMS-TUFLOW software was used for these calculations and sub-calculations. Based on the results as evaluated by numerical model, the proposal for a flood control arrangements has been made and is further available within the document. Last not least, the utilization of the aforementioned arrangements was measured and described.
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Estimating the flow capacity of river
Lorenc, Václav ; Dráb, Aleš (referee) ; Duchan, David (advisor)
The bachelor thesis is dealing with the watercourse`s capacity assessment of the river Jihlava on the kilometers 136,5 to 139,5 in the village Maly Beranov. In the chosen locality was made a model of the surface water flow during the flood flow rate Q1, Q5, Q20 and Q100. Based on the gathered information about the area`s utilization, errand and following calculation of the flow, the areas for a potential flood protection were identified. In the problematic locations was suggested to dredge the bottom. In selected sections was made a draft of protective earth dam and concrete wall. According to the draft of flood protection, the model of surface water flow was adapted and the efficiency of flood protection was verified by calculations. All the results are published in clear maps.
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