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首页> 美国政府科技报告 >Repair Works for Uplift and Seepage Control in Existing Concrete Dams.
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Repair Works for Uplift and Seepage Control in Existing Concrete Dams.

机译：既有混凝土坝的抗拔和防渗修复工程。

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The report studies the problems involved in the control of deterioration of rock foundations of concrete dams. The analysis of case histories on deterioration of rock mass and repair works of Portuguese dams is the main objective. Three case histories in Portuguese arch dams are presented. For each case the following is referred to: main characteristics of the works and main features of their design; relevant aspects of site studies, namely geological and geotechnical studies, and studies on materials; models and the experimental and numerical methods used in their analysis, developed to support design and safety control during operation; main features of the observation system and the most important results observed, with particular reference to hydromechanical behavior; detection of abnormal behavior; main aspects of the repair works; and finally behavior after repair. The three arch dams have different characteristics as regards to the geotechnical properties of the foundation, the shape and the year of construction; however, in the three cases similar methods were used in the repair works, particularly by the use of polymers. One case is still in progress; satisfactory results were obtained with the repair carried out in the other two cases. (kt)

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