METHOD OF DETERMINING THE DYNAMIC CHARACTERISTICS OF THE DAM FOUNDATION AND BODY OF THE WATER-DEVELOPMENT WORKS

The method consists in measuring (within the scope of investigated object) the forced oscillations of the dam body appearing under the effect of microseismic background of the natural and technogenic origin. The novelty of this technology consists in the fact that there is determined the variation of microoscillations of the dam body as a result of action of polymonochromatic vibration emission of operating generators of hydroelectric power plants or as a result of action of a special controlled vibration source. To note these variations, use is made of a group of three-component vibration transducers being transferred in the dam body and two stationary three-component vibration transducers located in the dam body and in its foundation. The readings of all these transducers are taken simultaneously. Such a procedure of making the measurements and the arrangement of special vibration transducers make it possible to obtain a set of dynamic and elasticity characteristics reflecting the physical state of the dam foundation and body of the water-development works.

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