.... The effect of intermediate principal stress is mostly ignored for simplification while analyzing and designing these structures. In addition, in many situations, the rocks are subjected to loadings which are cyclic in nature. Cycles of loading and unloading induce fatigue damage by altering its mechanical...

... type loading conference granite genuchten environmental science 861 mpa geological subdiscipline society iop publishing iop conf hlw disposal repository permeability mineral reservoir geomechanics microcrack humidity suction curve 11th Conference of Asian Rock Mechanics Society IOP...

... iop publishing iop conf granite loading Abstract Transparent rock-like materials have been used as a replica of natural rock to study the crack propagation mechanisms. Previous research focused on materials such as glass or transparent polymethyl methacrylate. In this paper, an alternative...

... Abstract The tensile stress generated by the transient unloading of the in-situ stress may cause deformation, damage or even destruction of the surrounding rock. Based on the equivalent load method and the deleted element method, the influence of blast loading and transient unloading...

... considered the performance of these criteria under Mode I loading, namely, K I ≠ 0, K II ≠ 0. The analytical solution for fracture initiation angle under each of the three mixed-mode criteria were presented, where the results demonstrated that only the elliptical form yielded accurate results...

... capacity without obvious softening and relaxation. The in-situ-measured minimum bearing capacity (0.986 Mpa) is consistent with the recommended bearing capacity of dam foundation mudstone, which is much greater than the maximum load of the dam foundation (0.5 Mpa). The value meets the bearing capacity...

... the multi-scale structures of fractured rocks, a micromechanical-based equivalent model under T-H-M coupled loading is presented in consideration of the influences of microcracks growth, opening and closing and fractures deformation and degradation on the mechanical behavior. By characterizing...

... Abstract The goal of this research is to study the dynamic properties and fracture damage laws of granite at the meso-scale under impact load. The quasi-static and dynamic mechanical properties of granite were studied through laboratory tests (Uniaxial compression, split Hopkinson pressure bar...

... Abstract Monopiles for offshore wind turbine foundations are often subjected to vertical-horizontal combined loading. For the analysis of piles subjected to horizontal loads in sand, the p-y curve method based on the Winkler model is usually employed, where p is the soil resistance...

... loading experiments. In the present study, a high-precision contact model that used Boussinesq's solution to relate contact stresses to surface displacements in two half-spaces was employed to calculate the deformation of rock fractures subject to normal loading-unloading cycles. The normal stress...

... invasion environmental science 861 precipitation concentration gradient geologist ion deposition chloride invasion geology loading chloride ion invasion pore chloride ion society iop publishing iop conf conference figure 3 Abstract Concrete for marine construction...

..., arrested and resume dynamic movement even without additional external load, seemingly due to the dynamic waves caused by the primary upward rupture. 1. Introduction In our contribution to ARMS10 in 2018 [1], through dynamic investigations into some instances of enigmatic earthquake-related structural...

... Abstract China has abundant deep shale gas resources, but the complex problem of wellbore collapse in horizontal well drilling is prominent. Aiming at the problem of wellbore collapse in deep brittle shale, deep shale's mechanical loading simulation experiment scheme under a complex wellbore...

... Abstract The fractured rock masses are often subject to impact loading, giving rise to complicated mixed-mode cracking. The propagation of the cracks may result in structural instability and project disaster and often cannot be understood by studying only the mode I fracture. Discovering...

... geology reservoir geomechanics conference society iop publishing iop conf geological subdiscipline microcrack geologist wellbore integrity environmental science 861 mechanism chinese journal friction-damage coupling fracture mechanic macrodamage specimen loading rock mechanic matrix...

.... Email:[email protected]; [email protected] Abstract. Cyclic loading is a common concept in geotechnical engineering, which has an important effect on rock joints. To study the mechanical properties and failure mechanisms of rock joints under cyclic loading, a kind of rock joint cyclic shear device...

..., the static shear strength, which is obtained by in situ rock shear tests under monotonic loading, is always used to judge the joint contacts between blocks for both static and dynamic analysis in the constitutive model of the DDA [1]. The use of the static shear strength is reasonable for static slope...

... sealing capacity and stability of the trap cap and pipe string under alternating load become the key problem that cannot be ignored. Firstly, the basic mechanical parameters of sandy mudstone and G-grade oil well cement were determined by conventional uniaxial tests, then, different upper load levels...

... Abstract The dynamic properties of jointed rock and closure deformation behavior of rock joints under impact loading are of significant importance for a correct understanding of stress wave propagation or dynamic failure in the rock masses, so a serial of impact tests of the intact and joined...

... loading speed to investigate the propagation law of the deformation wave. The digital image correlation technique is used to investigate the variation characteristics of the deformation wave of the sample. Furthermore, the variation characteristics of the three strain components of the slow deformation...