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The contemporary geomechanical and geophysical sciences describe deformation of a rock mass as of a complex hierarchy of block structures.As per this concept, a rock mass is a system of various scale blocks embodied into one another (M.A.Sadovsky.1979).Inter-block layers are usually composed of weaker and fissured rocks, based on that, there is a new phenomenon of dynamic response of rock mass called pendulum-type waves.Pendulum-type waves occur due to deformation of these partings and closely contacts with geomechanical structure.