U.S. Department of EnergyOffice of Scientific and Technical Information
Resolving the time lag' debate in dam stability analysis
Abstract
The significance of delays in uplift pressure increases during floods is a subject of ongoing debate among dam owners and regulators. Current regulatory standards do not recognize these delays, known as time lag. One recent study concludes that the regulatory approach, indeed, is reasonable. In the complete study, Stone Webster researchers evaluated uplift pressures from 17 large concrete gravity dams. Data from eight of the dams were used to study time lag. Uplift was measured as frequently as every 15 minutes at one dam, two times per day at another dam during a flood, and three times per week at six other dams. The study showed that, although there is always a small time lag, the duration of the time lag is generally not sufficient to justify reducing the uplift pressures used in stability calculations.
- Authors:
-
- Stone Webster Engineering Corp., Denver, CO (United States)
- Electric Power Research Inst., Palo Alto, CA (United States)
- Publication Date:
- OSTI Identifier:
- 6640807
- Resource Type:
- Journal Article
- Journal Name:
- Hydro Review; (United States)
- Additional Journal Information:
- Journal Volume: 12:2; Journal ID: ISSN 0884-0385
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 13 HYDRO ENERGY; DAMS; SAFETY ANALYSIS; STABILITY; COST; FLOODS; RESERVOIR PRESSURE; SAFEGUARD REGULATIONS; DISASTERS; REGULATIONS; 130600* - Hydro Energy- Environmental Aspects
Citation Formats
Grenoble, B A, Harris, C W, and Morris, D I. Resolving the time lag' debate in dam stability analysis. United States: N. p., 1993.
Web.
Grenoble, B A, Harris, C W, & Morris, D I. Resolving the time lag' debate in dam stability analysis. United States.
Grenoble, B A, Harris, C W, and Morris, D I. 1993.
"Resolving the time lag' debate in dam stability analysis". United States.
@article{osti_6640807,
title = {Resolving the time lag' debate in dam stability analysis},
author = {Grenoble, B A and Harris, C W and Morris, D I},
abstractNote = {The significance of delays in uplift pressure increases during floods is a subject of ongoing debate among dam owners and regulators. Current regulatory standards do not recognize these delays, known as time lag. One recent study concludes that the regulatory approach, indeed, is reasonable. In the complete study, Stone Webster researchers evaluated uplift pressures from 17 large concrete gravity dams. Data from eight of the dams were used to study time lag. Uplift was measured as frequently as every 15 minutes at one dam, two times per day at another dam during a flood, and three times per week at six other dams. The study showed that, although there is always a small time lag, the duration of the time lag is generally not sufficient to justify reducing the uplift pressures used in stability calculations.},
doi = {},
url = {https://www.osti.gov/biblio/6640807},
journal = {Hydro Review; (United States)},
issn = {0884-0385},
number = ,
volume = 12:2,
place = {United States},
year = {Thu Apr 01 00:00:00 EST 1993},
month = {Thu Apr 01 00:00:00 EST 1993}
}
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