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Evaluation and Rehabilitation of Relief Wells

by Max Kenneth Klaus, U.S. Army Engineer District, Vicksburg, United States,



Document Type: Proceeding Paper

Part of: Geotechnical Practice in Dam Rehabilitation

Abstract:

The U.S. Army Engineer District, Vicksburg has developed an expedient method of rehabilitating arrays of large numbers of gravity flowing relief wells located along the toe of dams using conventional equipment. The recurring problems associated with clogging by iron related bacteria and the large number of wells included in the toe relief systems at three reservoir dams have required an extensive effort to develop a program which will maximize the efficiency of the equipment, procedures, and chemicals used. A biological study is ongoing to attempt to provide insight into the bacterial problem and to determine the effectiveness of various chemicals used in the rehabilitative process. The procedures, chemicals, and equipment currently used, along with an overview of the bacterial problem will be presented herein. The biological study currently being conducted will also be discussed.

Subject Headings: Rehabilitation | Bacteria | Gravity dams | Equipment and machinery | Wells (water) | Chemical grouting | Biological processes

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