PROBABILISTIC AND POSSIBILISTIC ESTIMATES OF GENERATING-SET VIBRATIONS AT HPP DUE TO WATER PULSATION IN TOE BASIN

摘要

The problem of computational assessment of the vibrations of a generating set at an HPP due to water pulsation in the toe basin with consideration of incomplete (doubtful) information on the properties of the bed material is examined. A solution is derived on the basis of the Lamb problem of the propagation of elastic waves in a half plane due to the dynamic effect applied to a portion of its boundary. Point (probabilistic) and interval (with use of possibility theory) estimates are obtained for the level of vibration and compared with results of measurements on, for example, a generating set at the Sayano-Shushenskaya HPP.