Determination of deformation modulus of rock mass;Bakhtiari dam site

摘要

One of the key parameters in analyzing and designing of the underground andgeomechanical projects, especially in water pressure tunnels and dams, is determination of the deforma-tion modulus. To evaluate and estimation this parameter, several researches have been conducted usingempirical models and rock mass classifications. However, none of these models are capable of accuratelypredicting the modulus of deformation value. They only predict the initial estimation of this parameter.For this reason, a huge series of in situ tests based on the plate load test were carried out in the Bakhtiaridouble arch concrete dam, the highest concrete dam in the world. Finally, according to the in situ dataanalysis, a model to predict the modulus of deformation was presented.