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Numerical 3D simulations of seepage and the seepage stability of the right-bank dam of the Dry Flood Control Reservoir in Racibórz

Tomasz Strzelecki
Tomasz Strzelecki
, 
Anna Uciechowska-Grakowicz
Anna Uciechowska-Grakowicz
, 
Michał Strzelecki
Michał Strzelecki
, 
Eugeniusz Sawicki
Eugeniusz Sawicki
 and 
Łukasz Maniecki
Łukasz Maniecki
   | Jun 05, 2018
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Article Category: Research Article
Published Online: Jun 05, 2018
Page range: 11 - 20
Received: Oct 18, 2017
Accepted: Jan 12, 2018
DOI: https://doi.org/10.2478/sgem-2018-0003
Keywords
© 2018 Tomasz Strzelecki et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Figure 1

Localization of the reservoir on the hydrographic map of Poland (Aoteroa, 2006).
Localization of the reservoir on the hydrographic map of Poland (Aoteroa, 2006).

Figure 2

View of the triangle mesh of the terrain model of the reservoir’s area, with locations of numerical models
View of the triangle mesh of the terrain model of the reservoir’s area, with locations of numerical models

Figure 3

Fragment of the dam built of material from local mines, km 1+900.
Fragment of the dam built of material from local mines, km 1+900.

Figure 4

One of gravel mines within the reservoir’s basin, view from the right-bank dam, km 2+400.
One of gravel mines within the reservoir’s basin, view from the right-bank dam, km 2+400.

Figure 5

3D view of the REV element along with the generated finite element mesh
3D view of the REV element along with the generated finite element mesh

Figure 6

Generated 3D finite element mesh for Dam 1.
Generated 3D finite element mesh for Dam 1.

Figure 7

Isolines of hydraulic head relative to the roof of the gravel layer after: a) 1 day, b) 2.5 days, c) 15 days, d) 1 year.
Isolines of hydraulic head relative to the roof of the gravel layer after: a) 1 day, b) 2.5 days, c) 15 days, d) 1 year.

Figure 8

Isolines of hydraulic head in a selected cross-section relative to the elevation of 170 m above sea level after: b) 1 day, b) 2.5 days, d) 15 days, e) 1 year
Isolines of hydraulic head in a selected cross-section relative to the elevation of 170 m above sea level after: b) 1 day, b) 2.5 days, d) 15 days, e) 1 year

Figure 9

Vector field of seepage speed in the roof of the gravel layer underneath the clay layer after: a) during the period between floods (1 year after flood), b) 15th day of filling. Water table height in gravel layer is shown in the background.
Vector field of seepage speed in the roof of the gravel layer underneath the clay layer after: a) during the period between floods (1 year after flood), b) 15th day of filling. Water table height in gravel layer is shown in the background.

Figure 10

Area of change of potential Ψ to a negative sign on the 15th day of reservoir filling.
Area of change of potential Ψ to a negative sign on the 15th day of reservoir filling.

Figure 11

Model geometry (10× exaggeration): 1. clay, 2. gravel, 3. gravel columns in clay, 4. drain, 5. Diaphragm wall
Model geometry (10× exaggeration): 1. clay, 2. gravel, 3. gravel columns in clay, 4. drain, 5. Diaphragm wall

Figure 12

Seepage rate vectors on the 15th day of a flood, in the gravel layer for the case of the shorter diaphragm wall (left) and longer diaphragm wall (right).
Seepage rate vectors on the 15th day of a flood, in the gravel layer for the case of the shorter diaphragm wall (left) and longer diaphragm wall (right).

Figure 13

Comparison of water table height (in the case of no drainage) for both variants of diaphragm wall length. Longer diaphragm wall on the left, shorter on the right6.3
Comparison of water table height (in the case of no drainage) for both variants of diaphragm wall length. Longer diaphragm wall on the left, shorter on the right6.3

Figure 14

A) Generated 3D finite element mesh B) Cross-section through dam 3: 1. clay, 2. gravel, 3. gravel columns in clay, 4. drain
A) Generated 3D finite element mesh B) Cross-section through dam 3: 1. clay, 2. gravel, 3. gravel columns in clay, 4. drain

Figure 15

Isolines of hydraulic head and flow vectors in the gravel layer at 170 m above sea level after: a) 1 day, b) 15 days.
Isolines of hydraulic head and flow vectors in the gravel layer at 170 m above sea level after: a) 1 day, b) 15 days.
eISSN:
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Language:
English
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Journal Subjects:
Geosciences, other, Materials Sciences, Composites, Porous Materials, Physics, Mechanics and Fluid Dynamics
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