Location

St. Louis, Missouri

Session Start Date

3-11-1991

Session End Date

3-15-1991

Abstract

The October 17, 1989 Lorna Prieta Earthquake shook a large number of earth and rockfill darns. There were actually more than 100 darns within 50 miles of the fault rupture associated with this event. Although more than half of these embankments were less than 60 feet in height, a number of major darns were strongly shaken. In general, the darns performed satisfactory with one major darn and one minor darn developing moderate damage. A small number also developed minor to moderate cracking which required repairs. The great majority, however, sustained no significant damage. Although this result is quite encouraging, this thought should be tempered by the fact that the reservoirs in many of these darns were quite low at the time of the earthquake. Thus, the 1989 Lorna Prieta Earthquake was not the full test of these structures.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Meeting Name

Second Conference

Publisher

University of Missouri--Rolla

Publication Date

3-11-1991

Document Version

Final Version

Rights

© 1991 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Mar 11th, 12:00 AM Mar 15th, 12:00 AM

Performance of Earth Dams During the Loma Prieta Earthquake

St. Louis, Missouri

The October 17, 1989 Lorna Prieta Earthquake shook a large number of earth and rockfill darns. There were actually more than 100 darns within 50 miles of the fault rupture associated with this event. Although more than half of these embankments were less than 60 feet in height, a number of major darns were strongly shaken. In general, the darns performed satisfactory with one major darn and one minor darn developing moderate damage. A small number also developed minor to moderate cracking which required repairs. The great majority, however, sustained no significant damage. Although this result is quite encouraging, this thought should be tempered by the fact that the reservoirs in many of these darns were quite low at the time of the earthquake. Thus, the 1989 Lorna Prieta Earthquake was not the full test of these structures.