Sensitivities in rock mass properties: A DEM insight
This work proposes to look at the variation of some engineering properties of a rock mass (strength and stiffness) with respect to some structural and mechanical properties. Based on standard laboratories properties and field measurements, a discrete element model of a particular rock mass has been generated using the Synthetic Rock Mass approach (SRM). Large scale specimens are generated combining DEM to represent the rock and 3D discrete fracture network models to represent the structure pattern. The specimens of rock mass are then numerically tested. Series of compression tests have been performed on different samples varying loading direction, sample size, intact rock strength, joint size and joint spacing. Results of the simulations are presented here and sensitivity of the rock mass mechanical properties to these parameters is discussed.