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.

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.

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.

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.

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.

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.

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.

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.

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.

The following is a compendium of technical papers which were presented at the 1995 ASDSO Annual Conference in Atlanta, GA. 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.