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The behavior of rock masses is largely determined by the following factors: orientation and nature of its discontinuities and properties of the intact rock. Deformation and failure may take place in both Parts resulting in the actual response of the rock mass to changes in stresses. Rock masses may behave both in a brittle or a ductile manner depending on the state of stress they are subjected to. It is of fundamental significance to understand the mechanism of deformation and failure as a process. For this purpose experimental evidences gained from laboratory testing will be discussed. The mathematical modelling of the observed phenomena will be done taking into consideration elasticity, internal friction, cracking and viscosity. Special attention is given to the Problems of the continuum mechanics approach in tunnelling practice.
Index Terms:rock; TunnelingGroup
Further Information:Date published: 1982