... overburden are difficult to predict from a surface geological survey of mountain tunnels under the large overburden. The ground conditions ahead of a tunnel face needs to be predicted to ensure efficient and safe tunnel construction. inclination angle tunnel face mountain tunnel predictable range...

... ABSTRACT Results are presented of an experimental study of failure patterns in transversely isotropic sandstone samples induced by the Brazilian tensile test. The variation of the strength and the failure pattern is examined as a function of the inclination angle between the isotropic plane...