This paper reexamines orientations of shear bands (fault angles) predicted by a theory of shear localization as a bifurcation from homogeneous deformation. In contrast to the Coulomb prediction, which does not depend on deviatoric stress state, the angle between the band normal and the least (most compressive) principal stress increases as the deviatoric stress state varies from axisymmetric co...

Although the current ecological engineering technology can reinforce shallow landslides, it cannot deep landslides. A new type of technology-living tree stump slope protection was developed, aiming at deficiency technology. For living stumps with different tap root lengths, mechanical properties and system were analyzed. The model based on finite element method, using Mohr-Coulomb failure crite...

The use of recycled aggregates to produce precast concrete products is conductive the green development construction industrialization. This paper aimed study effects curing regimes and confining pressures on triaxial compression behavior aggregate (RAC). Triaxial tests were carried out RAC under different (standard curing, 60 °C—12 h 80 °C—9 h), designed 0 MPa, 2.5 5 10 MPa. results show that ...

Pore fluid pressure in a fault zone can be altered by natural processes (e.g., mineral dehydration and thermal pressurization) and industrial operations involving subsurface fluid injection and extraction for the development of energy and water resources. However, the effect of pore pressure change on the stability and slip motion of a preexisting geologic fault remains poorly understood; yet, ...

Seismic performance evaluations of tailings dams are essential for characterizing the geoenvironmental risks posed by these earthen structures, which should include the geotechnical hazards implied by slope instability failure, free board loss and the potential release of contaminants. The observed damage is more important when liquefaction occurs on the dam body and foundation, which often lea...

It is widely known that rainfall induces a rise of the groundwater level and an decrease in matric suction (negative pore water pressure) that results in slope failure. However, in many situations where shallow failures are concerned, it has been noted that there is not much evidence of a rise in the groundwater level sufficient to trigger the observed slope failures. Instead, the failures have...

We present an experimentally-based failure criterion for symmetric two-ply plain-weave laminates of carbon-fiber reinforced plastic. The criterion is formulated in terms of six force and moment stress resultants and consists of a set of three inequalities, related to in-plane, bending, and combined in-plane and bending types of failure. All failure parameters in the criterion are measured direc...

1Cancer Metabolism Research Group, Institute of Biomedical Sciences, University of São Paulo, Avenida Professor Lineu Prestes 1524, 05508-900 São Paulo, SP, Brazil 2Department of Clinical Medicine, Sapienza University, Viale dell’Università 37, 00185 Rome, Italy 3Cancer Research Group, Department of Biochemistry and Molecular Biology, Biology Faculty, University of Barcelona, Avenida Diagonal 6...

Abstract One of the most important oil and gas drilling studies is wellbore stability analysis. The purpose this research to investigate from a different perspective. To begin, vertical stress pore pressure were calculated. lowest maximum horizontal calculated using poroelastic equations. strike-slip normal fault regime was shown by in situ values. 1-D geomechanical model utilized failure mecha...