International Research on Mechanics of River Bank Erosion?A Summary Overview
A brief overview is presented of research regarding mechanisms of river bank erosion and treatments. In the research river planforms, water stages, currents, waves, ice sediments, bed...
Efficiency and Vibration Testing
To gather the necessary data to assure the most efficient and reliable operation of the system, Idaho Power Company implemented a plant testing program in 1988. The testing program consists...
Effect of Seepage in Cracks in Older Gravity Dams
One of the many problems encountered by dam designers is that of estimating uplift pressures in cracks within older concrete dams. As part of ongoing research, we are investigating this...
Hydropower and Fish Passage Impacts
The Pacific Northwest Electric Power Planning and Conservation Act (Act) of 1980 formed the Northwest Power Planning Council, which establishes criteria and sets goals for developing future...
Clay Joints in the Foundation of Dkhila Dam
The stability analysis performed at the beginning of construction, taking into account the shear test results of the foundation claystone showed insufficient safety factors against sliding....
In-Situ Shear Strength Testing
Dam stabilization requirements at the Upper Mechanicville Hydroelectric Project on the Hudson River in New York were significantly modified based on the results of an in-situ direct shear...
The Use of Interior Guide Tube in Cross Flow Turbines
The Cross Flow Turbine has the distinct advantage of lower initial and operating costs over other small scale turbines, but it is believed to lack somewhat in efficiency. In this study...
Characteristics of the Independent Turbine Testing Facility
The Independent Turbine Testing Facility (ITTF) located at the St. Anthony Falls Hydraulic Laboratory has recently undergone extensive upgrading, partially funded by a grant from the small...
Optimizing Joint Load Control for Hydroelectric Plants
This paper discusses a method to minimize water usage at a multi-turbine hydroelectric generating plant. At plants which do not spill water this optimization is directly converted to extra...
Runner Induced Penstock Vibrations
During the start up testing of the Sly Creek Power-house a severe penstock vibration was discovered at wicket gate openings above 65%. Subsequent testing revealed that the penstock vibration...
Turbine Improvements through Model Testing, a Case Study
An air-flow, propeller type, rim-drive turbine is being manufactured to be used in sites with heads ranging from 12 to 28 feet. A laboratory turbine model study was conducted to optimize...
Field Efficiency Tests of a Large Pump-Turbine
The New York Power Authority's Blenheim-Gilboa Pumped Storage Project began commercial operation in 1973. In 1987, the Authority initiated a study of the existing pump/turbines...
Field Efficiency Testing of Hydroelectric Turbines
The wide variability of conditions encountered in field testing of turbines is illustrated by examining two case studies with widely different scenarios. One site involved field acceptance...
Turbine Efficiency Measurements by the Pressure-Time and the Current-Meter Method at Paugan
Paugan generating station was built in the 1920s. Although the generators were converted from 25 Hz to 60 Hz in the mid 1950s, the original runners were in place until recently when a...
Analyses of the Lower San Fernando Dam Failure
The main methods employed for the back analysis of the behaviour of the Lower San Fernando Dam during the 1971 earthquake are described. The requirements for a comprehensive analysis are...
Successful Behavioral Devices for Fish Protection
Since 1987, the Electric Power Research Institute (EPRI) has been sponsoring studies of behavioral barrier devices for protecting fish at hydroelectric facilities. Primary emphasis has...
Evaluating Uplift Pressures for Concrete Gravity Dams
An approach for evaluating uplift and dam foundation conditions, which resulted from the initial phases of an Electric Power Research Institute (EPRI) study is presented. An earlier study...
Experience with the Application of Fully 3D Potential Flow Analysis to Runner Design
Hydraulic turbines come in various shapes and types depending on their operating conditions. Their performance characteristics depend largely on the runner which is the most difficult...
Foundation Engineering
Current Principles and Practices
The proceedings of the 1989 ASCE Foundation Engineering Congress (entitled Foundation Engineering: Current Principles and Practices) address advances in the state-of-practice and in research...
Predicted and Observed Axial Behavior of Piles
Results of a Pile Prediction Symposium
This publication presents the results of a pile capacity event that was held at the Lakefill site on the Evanston Campus of Northwestern University in conjunction with the 1989 Foundation...
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