Abstract:624.131.522 ~"k~o main types of nonlinearity are important in calculations of underground structures: physical (nonlinearity of the stress--strain relation) and morphological (nonlinearity of the structure of the calculation schemes).The first nonlinearity is a consequence of the known manifestation of the physical and mechanical properties of the material: The rock mass is practically always deformed nonlinearly when driving workings owing to the development of decompression.The more specific type, the sec… Show more
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