Safety Assessment for Debris Basins

by Bilal M. Ayyub, Univ Maryland, United States,
Richard H. McCuen, Univ Maryland, United States,



Document Type: Proceeding Paper

Part of: Structural Safety and Reliability

Abstract: Debris basins are engineering control structures used in locations where debris flows occur. Knowledge of the risk of failure as a function of important design variables can improve decision-making and minimize the hazard associated with debris flows. The risk was computed for four policy elements: rainfall frequency, interval between significant watershed burn, construction and dredging accuracy, and regularity of maintenance of debris basins. The burn interval and rainfall magnitude are the two most important variables associated with failure risk, with the risk varying from less than one percent to as much as 65 percent.

Subject Headings: Debris | Risk management | Failure analysis | Basins | Hydraulic structures | Solids flow | Structural safety | Structural failures

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