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W artykule przedstawiono metodę identyfikacji nieciągłości wklejenia żerdzi kotwiowych w górotworze. Metoda polega na wymuszeniu drgań badanego obiektu młotkiem udarowym i eksperymentalnej analizie modalnej. Otrzymane częstości własne porównywane są z wynikami teoretycznej analizy modalnej realizowanej na modelu elementów skończonych badanego obiektu dla różnych warunków brzegowych odpowiadających...
A rock bolt which is grouted underground may not be properly inserted which results in discontinuity of a resin layer surrounding it. Such discontinuity may also occur in working conditions due to typical rock behavior and displacement. It may be hazardous. In this paper a method for non-destructive identification of discontinuity of a resin layer surrounding rock bolts is presented. The method uses...
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