224-0248/01 – Geohydrodynamics (GHD)
| Gurantor department | Department of Geotechnics and Underground Engineering | Credits | 5 |
| Subject guarantor | prof. Ing. Naďa Rapantová, CSc. | Subject version guarantor | prof. Ing. Naďa Rapantová, CSc. |
| Study level | undergraduate or graduate | Requirement | Compulsory |
| Year | 1 | Semester | winter |
| | Study language | Czech |
| Year of introduction | 2015/2016 | Year of cancellation | |
| Intended for the faculties | FAST | Intended for study types | Follow-up Master |
Subject aims expressed by acquired skills and competences
The aim is to cover a wide range of topics (see annotation) so we approached the students with basic terminology, principles and methods in the given subject and their practical application.
Teaching methods
Lectures
Tutorials
Project work
Teaching by an expert (lecture or tutorial)
Summary
Subject Geohydrodynamics gives a basic overview of patterns of groundwater flow in the rock environment in both saturated and unsaturated zones. In addition to the problems of porous media flow, attention is paid to hard rock – fracture flow (Cubic Law). Students are acquainted with the hydraulic parameters of aquifer and the methods of their determination in the laboratory and with hydrodynamic field tests. Students are encouraged to practice using analytical calculation equations - calculation of fluxes through the dam, hydraulic systems for dewatering construction pits, etc.
Compulsory literature:
Powers, J. Patrick Corwin, Arthur B. Schmall, Paul C. Kaeck, Walter E. (2007). Construction Dewatering and Groundwater Control - New Methods and Applications (3rd Edition). John Wiley & Sons. Online version available at: https://app.knovel.com/hotlink/toc/id:kpCDGCNMA1/construction-dewatering/construction-dewatering
Recommended literature:
Additional study materials
Way of continuous check of knowledge in the course of semester
The project protocols of exercises, laboratory measurements.
E-learning
www.geotechnici.cz
LMS Moodle VŠB-TUO
Other requirements
Completion of the course Civil Engineering Geology, and Basics of Hydrogeology and Engineering Geology
Prerequisities
Subject has no prerequisities.
Co-requisities
Subject has no co-requisities.
Subject syllabus:
Lectures:
Physical properties of fluids (density, specific gravity, compressibility, thermal expansion, viscosity, surface and contact tension, gas solubility - basic relationships and units).
2. Physical properties of aquifer (permeability, transmisivity, porosity, volumetric elasticity of aquifer, storativity, hydraulic conductivity - basic relations and units).
3. Systematics of the types of filtration fluxes - basic characteristics and overview of basic flow equations.
4. Law of continuity of flow - general continuity equation (steady and transient filtration of compressible and incompressible fluids).
5. Darcy's Linear Law (Problems of filtration rates, tortuosity). Nonlinear laws of filtration. Turbulent flow.
6. Basic equations of gravitational fluxes of incompressible fluids (Boussinesq equation) – unconfined conditions.
7. Basic equations of fluid filtration under confined conditions (incompressible, compressible under low and high-pressure).
8. Basic analytical equations for flows under steady flow conditions in confined and unconfined systems (Dupuit equations).
9. Depression cone (shape and characteristics). Basic computational relationships. Transient behavior of groundwater drawdown. Interference of wells (depression cones).
10. Basic analytical equations for flows under transient flow conditions in confined and unconfined systems (Theiss equations).
11. Methods of hydrodynamic testing – pumping tests, recovery tests, slug tests.
12. Hydrodynamic testing under steady state flow conditions (confined and unconfined aquifer). Dupuit method.
13. Hydrodynamic testing under transient flow conditions (confined and unconfined aquifer). Theiss type type curves, Jacob's method.
14. Hydraulic boundary conditions, their significance and manifestations in hydrodynamic tests.
Exercise: (or project)
1 / -2 / Calculations of fluid pressures (real gas corrections, compressibility, thermal expansion and fluid mineralization).
3 / Construction of groundwater contour maps – for system with stream drainage.
4 / Laboratory determination of soil permeability - Permeameter - Laboratory measurement.
5 / Calculations of basic hydraulic parameters of aquifers from empirical formulas.
6 / Ground water flow calculations for paralel flow in confined and unconfined conditions – steady state flow (Dupuit equations).
7) Calculation of the depression cone for radial flow flow in confined and unconfined conditions steady state flow (Dupuit equations).
8 / Calculation of groundwater drawdown in the network of points for a well system (interference of wells).
9 / Analytical evaluation of hydrodynamic tests under steady flow conditions.
10 / - 11 / Analytical evaluation of hydrodynamic tests under under transient flow conditions. Theiss and Jacob methods. Implementation of boundary conditions.
12-14 / Hydrodynamic testing project.
Conditions for subject completion
Occurrence in study plans
Occurrence in special blocks
Assessment of instruction