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...

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...

The multiaxial Mises-Schleicher and Drucker-Prager unified (MSDPu) criterion has been shown to exhibit several specific features compared other yield failure criteria, including a nonlinear mean stress dependency, influence of the Lode angle, use independent uniaxial compressive tensile strength values absence an apex (singularity) on envelope surface in negative quadrant. However, MSDPu seldom...

Abstract This paper aims to study the behaviour of a circular footing resting on two granular layers, i.e., dense sand layer loose strata, subjected vertical and an inclined loading (?=0°, 10°, 20°, 30°) using finite element (FE) software PLAXIS-3D. The Mohr-Coulomb criterion is employed for analysis model, in which parameters are considered vary significantly; (1) thickness top (dense layer) (...