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PLAXIS | SOILVISION Wiki PLAXIS 3D Tutorial 07: Rapid drawdown analysis
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              • PLAXIS 3D Tutorial 06: Phased excavation of a shield tunnel
              • PLAXIS 3D Tutorial 07: Rapid drawdown analysis
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    PLAXIS 3D Tutorial 07: Rapid drawdown analysis

    Application PLAXIS 3D
    Version PLAXIS 3D
    Date created 04 October 2018
    Date modified 16 May 2022

    This example concerns the stability of a reservoir dam under conditions of drawdown. Fast reduction of the reservoir level may lead to instability of the dam due to high pore water pressures that remain inside the dam. The dam to be considered is 30 m high. The top width and the base width of the dam are 5 m and 172.5 m respectively. The dam consists of a clay core with a well graded fill at both sides. The geometry of the dam is depicted in the image below. The normal water level behind the dam is 25 m high. A situation is considered where the water level drops 20 m. The normal phreatic level at the right hand side of the dam is 10 m below ground surface. The sub-soil consists of overconsolidated silty sand.

    Tutorial case files

    Green book PLAXIS 3D CEV22.01 Tutorial 07: Rapid drawdown analysis.pdf

    Green book PLAXIS 3D CEV22 Tutorial 07: Rapid drawdown analysis.pdf

    Green book PLAXIS 3D CEV21 Tutorial 07: Rapid drawdown analysis.pdf

    Command log files

    Notepad spiral PLAXIS 3D CEV22.01 Tutorial 07: Rapid drawdown analysis.p3dlog

    Notepad spiral PLAXIS 3D CEV22 Tutorial 07: Rapid drawdown analysis.p3dlog

    Notepad spiral PLAXIS 3D CEV21 Tutorial 07: Rapid drawdown analysis.p3dlog

    This exercise requires a PLAXIS 3D Ultimate license for transient groundwater flow calculations.

    The attached *.p3dlog file contains all the commands to generate the model. With a Bentley Geotechnical SELECT Entitlement [GSE] licence, you can use the commands runner to open the *.p3dlog file and to execute all commands in one go, see also this instruction.

    Older downloads

    • PLAXIS 3D 2018 - Tutorial Lesson 07.pdf
    • PLAXIS 3D 2018 - Tutorial Lesson 07.p3dlog [command log file]

    See also

    Track previous PLAXIS 3D Tutorial 06: Phased excavation of a shield tunnel   [Tutorials]


    Track next PLAXIS 3D Tutorial 08: Dynamic analysis of a generator on an elastic foundation   [Tutorials]

    • coupled flow
    • PLAXIS 3D
    • dam
    • unsaturated
    • fully coupled flow
    • time-dependent
    • PLAXIS
    • Coupled Analysis
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    • Micha van der Sloot Created by Bentley Colleague Micha van der Sloot
    • When: Wed, Dec 18 2019 10:44 AM
    • Felipe Fonseca Last revision by Bentley Colleague Felipe Fonseca
    • When: Tue, May 17 2022 6:20 AM
    • Revisions: 8
    • Comments: 0
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