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Water supply of scout camp by hydraulic ram
Růžička, Jakub ; Duchan, David (referee) ; Špano, Miroslav (advisor)
This work is dealing with water supply of a scout camp from Trusovický potok. The water is pumped with a ram pump to the water tank. The construction of the ram pump is simplified and it is collected from commonly available fittings and fixtures. The water from the tank is distributed by pipe network gravitationaly. Operating charakteristics of the hydraulic ram pump were measured in the laboratory.
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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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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.
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Comparement of results from infiltration tests
Blahut, Dominik ; Mazáč, Petr (referee) ; Duchan, David (advisor)
The aim of this thesis is to compare the results of water infiltration from field tests, from laboratories and from numerical modeling at two selected locations. The first objective is the search procedure and the description of both sites and its adjacent areas. Further work continues with infiltration field tests using ring infiltrometer, at first theoretically for each method, and then practically with own personal measurements in the field. Further from the collected soil samples the measurements are performed in the laboratory, first in the permeameter, and followed by the grain size distribution test, from which the hydraulic conductivity is derived by using empirical formulas. At last the numerical modeling is used and all the results are compared. In the final phase of thesis the recommendations are given for infiltration at various locations and comparsion of the infiltration methods.
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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.
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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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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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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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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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