Course detail

Stability of channels of water courses

FAST-DR58Acad. year: 2020/2021

Natural stream channel evolution, response of natural stream to interferences. Generation, properties and transport of sediments. Effect of sediment transport to channel bed roughness. Deformation of particular parts of open channels and train rivers by water flow.

Language of instruction

Czech

Guarantor

prof. Dr. Ing. Miloslav Šlezingr

Department

Institute of Water Structures (VST-VST)

Learning outcomes of the course unit

Not applicable.

Prerequisites

River hydraulics - mathematical models of river flow, mechanic-physical properties of earth materials

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Not applicable.

Assesment methods and criteria linked to learning outcomes

Not applicable.

Course curriculum

1. Channel evolution processes, stream slope curve, regime theory
2. Generation of sediments, Sternberg's law, mechanic-physical
properties of sediments
3. Initiation of sediment transport - distribution of shear stress in
profile
4. Critical shear stress, drag force
5. Non-scouring and silting velocity, sediment flow
6. Analysis and comparison of comonly used calculaiton formulas
7. Flow in open channel - velocity field - point, in vertical and
mean profile velocities
8. Deformation of velocity field in river bends - main equation
9. Razovsky method of expression of velocity field deformation
10. Deformation of channel, geration of scours and deposits
11. Theoretic-empiric formulas for calculaiton of size of possible
scours
12. Comparison of applicability of different formulas
13. Influence of sediment transport to change of roughness degree

Work placements

Not applicable.

Aims

Evaluation of stability of open channels as ecological spine of landscape. Physical bases, theoretical bases and empirical calculation formulas.

Specification of controlled education, way of implementation and compensation for absences

Extent and forms are specified by guarantor’s regulation updated for every academic year.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

Not applicable.

Recommended reading

Lebreton,J., C.: Dynamique fluviale. Eyroles Paris 1974
Raudkivi,A.,J.: Loose Boundary Hydraulics. Pergamon Oxford 1967

Type of course unit

 

Lecture

39 hours, optionally

Teacher / Lecturer

prof. Dr. Ing. Miloslav Šlezingr

Syllabus

1. Channel evolution processes, stream slope curve, regime theory 2. Generation of sediments, Sternberg's law, mechanic-physical properties of sediments 3. Initiation of sediment transport - distribution of shear stress in profile 4. Critical shear stress, drag force 5. Non-scouring and silting velocity, sediment flow 6. Analysis and comparison of comonly used calculaiton formulas 7. Flow in open channel - velocity field - point, in vertical and mean profile velocities 8. Deformation of velocity field in river bends - main equation 9. Razovsky method of expression of velocity field deformation 10. Deformation of channel, geration of scours and deposits 11. Theoretic-empiric formulas for calculaiton of size of possible scours 12. Comparison of applicability of different formulas 13. Influence of sediment transport to change of roughness degree