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Application |
GeoStudio |
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Version |
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Primary Analysis |
SEEP3D |
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Keywords |
GeoStudio, SEEP3D, SEEP/W, Relief, well, spacing |
Introduction
Elevated pore-water pressures or artesian conditions can develop on the landward side of water retention dams or levees. Typically, this occurs when the embankment is constructed on an impermeable layer underlain by a pervious sand layer. Pressure in the sand aquifer builds due to downward flow through the low conductivity confining unit. This leads to strong upward flow and possibly artesian conditions in the sand near the toe of the embankment. Consequently, the pore-water pressures and corresponding flow regime can influence stability and even lead to piping. One method for alleviating the excess pressure is to install relief wells. To determine the spacing required between the relief wells, a three-dimensional seepage analysis is required. This example demonstrates how to create and evaluate well spacing using SEEP/W and SEEP3D.
Downloads
▪ 📗 GeoStudio - SEEP3D - Relief well spacing (3D) - Information [PDF]
▪ 💻 GeoStudio - SEEP3D - Relief well spacing (3D) - Project [gsz]
See also