... is an extension of coulomb's classic method of calculating wall pressures on incoherent materials with a non linear strength criterion At the present time the calculation of pressures on these materials requires a previous linearization of the failure criterion. This linearization is always Problematical so its...

... in the analysis:  Lateral earth pressure coefficient 1( 3: A value of 1.0 has been adopted, for both soil types, basalts and pyroclastics.  Confinement loss, ? (Panet, 1995): At each stage a fictitious stress applied to the walls has been considered in the calculation. This was defined as (1-k where...

... of the main characteristics of the project is presented and the results predicted by the design are compared with the values given by the instrumentation. Upstream Oil & Gas cavern characteristic displacement rockbolt Madeira Island calculation construction work primary support shotcrete...