Titlebook: Elektrotechnik und Elektronik; für Maschinenbauer u Rudolf Busch Textbook 20064th edition Vieweg+Teubner Verlag | Springer Fachmedien Wiesb

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Rock properties and mechanical behaviors, industry many geological disasters induced by mining were associated with misunderstanding of rock mechanical properties (Peng 1998a, Han and Peng 2002). Rock physical properties include density, porosity, and permeability, etc. Rock mechanical properties mainly include elastic modulus, Poisson’s r