... earthquake resistance characteristic rebar displacement tokyo metropolitan university uniaxial compressive strength rockbolt shear deformation deformation countermeasure 15th ISRM Congress 2023 & 72nd Geomechanics Colloquium. Schubert & Kluckner (eds.) © ÖGG Characteristics of reinforcement...

...-roofed excavation mechanics: (1) roof instability in these cases involves primarily tensile deformation at the mid-span of the excavation and primarily shear deformation near the abutments; (2) prevention of shear deformation near the abutments can effectively stop mid-span deflection and block loosening...

.... (2001) defines factors that may be used in order to account for attenuation of motions inside the ground mass. However, these factors are provided for depths up to 30 m only, whereas depths of tunnels structures can range up to thousands of meters. shear deformation relative displacement...

... that earthquake-related shear deformation in the ground induces shear deformation in the tunnel, which causes an increased bending moment at the lining arch shoulder part and results in failure. Type II: Flexural compression failure and spalling at the crown characterize damage to tunnels in ground with poor...

... O-A). When a firm contact is fully achieved, the shear stiffness becomes almost constant whicb gives rise to a steady increase both in shear resistance and shear deformation (A-B). The shear deformation in this part includes both plastic sliding and elastic deformation of the rock joint. When...

...A practical formulation of Flow Element Method for large shear deformations Une formulation pratique de la meth6qe "Flow Elemenf' pour des problemes de grandes deformations de distorsion ' Eine praktische Formulierung der FlieB-Elemente-Methode fOr Probleme einer groBen Scherverformung T.NISHIMURA...

... records of individual fractures and superimposed on one another before exposure. (Brummer, 1987). metals & mining shear deformation tribution plane complex reservoir stope face numerical simulation data mining Simulation localization Figur fracture asperity excavation...

... strength is manifested in the fact that shear deformation is dependent on the omnidirectional pressure, While volume deformation depends on shear stress (which causes loosening). The deformation equation and its parameters can be obtained from diagrams of uniaxial compression and tension of the rock. Cases...