A comparative study for empirical equations in estimating deformation modulus of rock masses

The deformation modulus of rock masses (Em) is one of the significant parameters required to build numerical models for many rock engineering projects, such as open pit mining and tunnel excavations. In the past decades, a great number of empirical equations were proposed for the prediction of the rock mass deformation modulus. Existing empirical equations were in general proposed using statistical technique and the reliability of the prediction...