Kaiser effect in rocks as a result of three-dimensional load

Kaiser effect is noted during loading the rocks which have been subjected to action of stresses creating anisotropic damage. Kaiser effect can be used for evaluating the stresses. In this case, it is necessary to determine influence of three-dimensional stressed state on Kaiser effect. The main regularities in manifestation of Kaiser effect in various conditions of three-dimensional loading have been considered. Use of the regularities during developing the methods to measure stresses in rocks plays important role. Mathematical model of phenomena in rocks has been developed. Results obtained with the use of the model agree with experimental data.