American Society of Civil Engineers


Morris Sheppard Dam: A Rational Approach to Stability Analysis


by John A. Focht, Jr., (Fugro-McClelland, Inc, United States) and Robert P. Ringholz, (Fugro-McClelland, Inc, United States)

pp. 277-281

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Document type: Conference Proceeding Paper
Part of: Optimizing the Resources for Water Management
Abstract: This paper details the excessive foundation piezometric conditions found during a routine five-year inspection, and presents the results of backfigured stability analysis of a critical buttress. It then summarizes the multiple sets of design stability criteria established by the design team to be achieved by the corrective measures. This rational approach using the Terzaghi observational method in conjunction with detailed analyses is believed to have provided a better balance of risk and certainty than is normally achievable with new construction. Analyses of corrective measures undertaken are presented to show that adequate stability of this 50-year old dam can be accomplished by grouting, development of good foundation drainage, and placement of substantial ballast within the dam.


ASCE Subject Headings:
Dam safety
Dams
Design
Grouting
Pressure
Soil strength
Uplifting

Author Keywords:
Dams, Buttress
Dams--Repair - Drainage - Foundations--Pressure Effects - Grouting - Rock Mechanics--Stability
Corrective Measures - Dam Safety - Design Stability - Morris Sheppard Dam - Stability Analysis - Terzaghi Observational Method