Analysis of controlled deformation in rocks and soils

ADECO-RS was proposed by Pietro Lunardi in the 1980s on the basis of long in-depth research into the stress-strain behavior of more than 1,000 km of tunnel and more than 9,000 faces.

ADECO- RS is a systematic and full-face mechanized excavation tunneling technology that can be used under various surrounding rock conditions, especially in shallow buried soft formation.

In diagnosis phase(2): to predict and classify the surrounding rock of tunnel face into A, B, C three forms based on its stability conditions.

In therapy phase(3): to the determine methods of stabilizing (preconfinement or simple confinement) and excavating the tunnel on the basis of three behaviour categories, A, B, C. and then, to the theoretical evaluation of the effectiveness.

In operational phase(4): to begin with the construction, during which the stabilizing methods (confinement and preconfinement) for controlling the Deformation Response are adopted.

Taking measures to improve the stiffness of the advance core medium can relieve the deformation reaction of the tunnel face and cavity.