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  • 3-D Effects on Estimation of Gradients, Seepage Flows and Evaluation of Internal Erosion Potential Failure Modes: Download

    Contains 1 Component(s)

    This is a DOWNLOADABLE version of the July 12, 2016 live webinar. This webinar will present the results of 2-D and 3-D numerical evaluations of seepage conditions around a developing piping defect

    This webinar will present the results of 2-D and 3-D numerical evaluations of seepage conditions around a developing piping defect. An updated model similar to the first 3-D numerical model performed at the University of Florida beginning in about 1980 (Townsend, 1981) will be presented to illustrate the importance of 3-D influences on estimated seepage gradients, seepage flows and the evaluation of potential internal erosion potential failure modes. The updated numerical models were developed using the computer code SVFlux. One of the benefits of this program is an automatic remeshing routine that provides for more accurate estimation of seepage gradients in areas of seepage concentration such as at a discharge defect (influence on initiation processes), or as a pipe continues (progresses) in an upstream direction toward the reservoir or water source. A simplified method of estimating 3-D influences on gradients and flow quantities will be presented that will allow practitioners to evaluate a number of different shapes and sizes of dam and levees.


    Key takeaways from participating in this webinar include:

        Importance of 3-D effects on assessment of seepage safety.
        Better understanding of internal erosion and related potential failure modes.
        Increased understanding of some of the history of seepage research.
        Software for 2-D and 3D seepage evaluations.
        Use of judgment in assessing seepage issues and risk assessment.

    Keith A. Ferguson, P.E.

    National Practice Leader, Dams and Hydraulic Structures, HDR Engineering, Inc.

    Mr. Ferguson is a senior dam safety and geotechnical engineer with over 35 years of experience in the assessment, design and construction of embankment, rockfill, and roller compacted concrete dams.  Mr. Ferguson has previously been an instructor for a number of ASDSO training programs including Rehabilitation of Dams, and Stability Evaluation of Embankment and Concrete Dams, along with an advanced technical seminar on Seepage for Earth Dams.  He holds both BS and MS degrees from the University of Colorado at Boulder with emphasis in geotechnical engineering, and is a registered professional engineer in 18 states.

  • 3-D Effects on Estimation of Gradients, Seepage Flows and Evaluation of Internal Erosion Potential Failure Modes: On-Demand

    Contains 4 Component(s), Includes Credits

    This is an ON-DEMAND version of the July 12, 2016 live webinar. This webinar will present the results of 2-D and 3-D numerical evaluations of seepage conditions around a developing piping defect

    This webinar will present the results of 2-D and 3-D numerical evaluations of seepage conditions around a developing piping defect. An updated model similar to the first 3-D numerical model performed at the University of Florida beginning in about 1980 (Townsend, 1981) will be presented to illustrate the importance of 3-D influences on estimated seepage gradients, seepage flows and the evaluation of potential internal erosion potential failure modes. The updated numerical models were developed using the computer code SVFlux. One of the benefits of this program is an automatic remeshing routine that provides for more accurate estimation of seepage gradients in areas of seepage concentration such as at a discharge defect (influence on initiation processes), or as a pipe continues (progresses) in an upstream direction toward the reservoir or water source. A simplified method of estimating 3-D influences on gradients and flow quantities will be presented that will allow practitioners to evaluate a number of different shapes and sizes of dam and levees.

    Key takeaways from participating in this webinar include:

        Importance of 3-D effects on assessment of seepage safety.
        Better understanding of internal erosion and related potential failure modes.
        Increased understanding of some of the history of seepage research.
        Software for 2-D and 3D seepage evaluations.
        Use of judgment in assessing seepage issues and risk assessment.

    Keith A. Ferguson, P.E.

    National Practice Leader, Dams and Hydraulic Structures, HDR Engineering, Inc.

    Mr. Ferguson is a senior dam safety and geotechnical engineer with over 35 years of experience in the assessment, design and construction of embankment, rockfill, and roller compacted concrete dams.  Mr. Ferguson has previously been an instructor for a number of ASDSO training programs including Rehabilitation of Dams, and Stability Evaluation of Embankment and Concrete Dams, along with an advanced technical seminar on Seepage for Earth Dams.  He holds both BS and MS degrees from the University of Colorado at Boulder with emphasis in geotechnical engineering, and is a registered professional engineer in 18 states.

  • 1987 Dam Safety Conference Proceedings

    Contains 1 Component(s)

    The following is a compendium of technical papers which were presented at the 1987 ASDSO Annual Conference held in Columbus, OH.

    The following is a compendium of technical papers which were presented at the 1987 ASDSO Annual Conference held in Columbus, OH. All presentations received by the print date are published here. A special thanks to all speakers, moderators, and session coordinators for their contributions to the conference.

  • 1988 Dam Safety Conference Proceedings

    Contains 1 Component(s)

    The following is a compendium of technical papers which were presented at the 1988 ASDSO Annual Conference held in Manchester, NH.

    The following is a compendium of technical papers which were presented at the 1988 ASDSO Annual Conference held in Manchester, NH. All presentations received by the print date are published here. A special thanks to all speakers, moderators, and session coordinators for their contributions to the conference.

  • 1989 Dam Safety Conference Proceedings

    Contains 1 Component(s)

    The following is a compendium of technical papers which were presented at the 1989 ASDSO Annual Conference held in Albuquerque, NM.

    The following is a compendium of technical papers which were presented at the 1989 ASDSO Annual Conference held in Albuquerque, NM. All presentations received by the print date are published here. A special thanks to all speakers, moderators, and session coordinators for their contributions to the conference.

  • 1990 Dam Safety Conference Proceedings

    Contains 1 Component(s)

    The following is a compendium of technical papers which were presented at the 1990 ASDSO Annual Conference held in New Orleans, LA.

    The following is a compendium of technical papers which were presented at the 1990 ASDSO Annual Conference in New Orleans, LA. All presentations received by the print date are published here. A special thanks to all speakers, moderators, and session coordinators for their contributions to the conference.

  • 1991 Dam Safety Conference Proceedings

    Contains 1 Component(s)

    The following is a compendium of technical papers which were presented at the 1991 ASDSO Annual Conference held in San Diego, CA.

    The following is a compendium of technical papers which were presented at the 1991 ASDSO Annual Conference in San Diego, CA. All presentations received by the print date are published here. A special thanks to all speakers, moderators, and session coordinators for their contributions to the conference.

  • 1992 Dam Safety Conference Proceedings

    Contains 1 Component(s)

    The following is a compendium of technical papers which were presented at the 1992 ASDSO Annual Conference held in Baltimore, MD.

    The following is a compendium of technical papers which were presented at the 1992 ASDSO Annual Conference in Baltimore, MD. All presentations received by the print date are published here. A special thanks to all speakers, moderators, and session coordinators for their contributions to the conference.

  • 1993 Dam Safety Conference Proceedings

    Contains 1 Component(s)

    The following is a compendium of technical papers which were presented at the 1993 ASDSO Annual Conference held in Kansas City, MO.

    The following is a compendium of technical papers which were presented at the 1993 ASDSO Annual Conference in Kansas City, MO. All presentations received by the print date are published here. A special thanks to all speakers, moderators, and session coordinators for their contributions to the conference.

  • 1994 Dam Safety Conference Proceedings

    Contains 1 Component(s)

    The following is a compendium of technical papers which were presented at the 1994 ASDSO Annual Conference held in Boston, MA.

    The following is a compendium of technical papers which were presented at the 1994 ASDSO Annual Conference in Boston, MA. All presentations received by the print date are published here. A special thanks to all speakers, moderators, and session coordinators for their contributions to the conference.