Stresses in the foundation of the floating block of the kislaya guba tidal power station

Conclusions

The results of measuring the stresses reflect the successful conduction of the operations of setting the block on the artificial foundation and even placement of the block both in the dock and at the site of the tidal power station. Experience at the Kislya Guba tidal power station shows that soil and piezodynamometers cna be used successfully for investigating stresses in the foundation of a floating structure under marine conditions when the following necessary conditions are observed: a) a piezodynamometer must be placed alongside of each soil dynamometer; b) higher requirements must be imposed on the elimination of lateral fastening of instruments; c) the instrument must be reliably protected against corrosion and fouling by marine microorganisms; d) special attention must be given to the commutation of instruments (it is necessary to investigate the reliability of lengthening the cables under seawater conditions on instruments installed at the Kislaya Guba tidal power station).

The installation of instruments by the underwater method made it possible to reveal the most vulnerable places of these operation, i.e., to find places for installing the instrument and protecting the cables under water. However, this matter requires additional development. In so doing, particular attention should be given to effective control of the performance of this operation by divers.

The conduction of full-scale observations during the operating period will make it possible to obtain a more clear-cut picture of the change of stresses in the foundation of the block of the Kislaya Giba tidal power station as a function of the variable head.