Analyzing The Impacts Of Explosions On Dams
And Levees
Author(s)
J. Parkes, H. Kelly, G. Munfakh & S. Choi
Abstract
Infrastructure safety and security is a growing area of engineering analysis.
Dams and levees need to be considered as part of these critical infrastructure
assessments. In the United States alone, there are over 80,000 dams and 100,000
miles of levees. Over 26,000 of these dams are classified as high or significant
hazard. A study has recently been undertaken with the goal of expanding blast
security assessments for modeling the impacts of explosions to include analysis
of embankment dams and levees. Specific aims of the study include developing
reasonably accurate models to assess localized, shallow impacts and developing
methods to assess global stability impacts.
Assessing these structures requires a unique combination of understating of
blast impacts, soil modelling under high energy dynamic loading, embankment
dam failure modes, and conventional geotechnical slope stability. A trial dam
section was developed and possible failure mechanisms due to blast impacts
were determined. Published numerical soil models, developed and validated for
land mine analyses, were evaluated with regard to typical soil properties of
embankment dam materials. An applicable soil model was selected, and the
numerical trial dam model was analysed for an explosion on the crest. The
results were assessed using conventional geotechnical engineering software and
engineering judgment. A step-by-step procedure for assessing the impacts of
explosions on embankment dams has been developed, and a simplified chart for
assessing localized breach potential have been developed. Areas for further study
and validation are also identified. The work combines research from military
applications with state-of-the-art infrastructure security analyses and
conventional geotechnical engineering evaluations.
Keywords: dam and levee security, explosions, blast impacts, embankments,
simplified charts.
Keywords
dam and levee security, explosions, blast impacts, embankments,
simplified charts
Related Book
Other papers in this volume
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