... another (Salehi et al. 2007). Laser effects appear in two steps in rocks, firstly, the creation of a hole in the rock and secondary include melting, evaporation, laser beam gases and micro fractures. modeling & simulation finite element method fracture structural geology limestone mpa...

... variable rock. Thus, in this paper, the influence of spatial variability of strength properties on the situation of non-elastic zone extension is investigated in the Finite Element Method (FEM) analysis of a shallow tunnel. The results show that considering the spatial variability concept changes the size...

...., 2005). In Cohesive Zone Models (CZM), fractures propagate along predefined paths, and a governing law (traction-separation law) determines fracture and dissipated energy evolution. In Extended Finite Element Methods (XFEM), the propagation path is not predefined. Discontinuous enrichment functions...

... Abstract According to the geometrical characteristics of triangular meshes, Triangular Mesh Split Model (TMSM) based on a finite element method is proposed to simulate cracks propagation of fractured rock. With TMSM, stress intensity factors at the tip of cracks are obtained by far-field...

... uniaxial expression. Two types of branch cracks, i.e. wing cracks and secondary cracks are found through experiments. Then, the extended finite element method (XFEM) technique is applied to simulate the propagation of cracks in the specimens, and results obtained from the XFEM analysis are compared...

... method for crack-weakened rock mass. On the basis of extended finite element method, a multiple scale model for simulating the damage evolution in crack-weakened rock mass is proposed. The coordination between the internal boundary (such as cracks and holes) and mesh is not needed in this new model...

... Upstream Oil & Gas back analysis bedrock Valgrisenche Artificial Intelligence slope movement strength parameter inclination Engineering ground investigation limit equilibrium landslide Reservoir Characterization displacement borehole investigation finite element method...

... shuibuya underground powerhouse soft rock mass replacement Artificial Intelligence formula powerhouse underground powerhouse finite element method Refine rock mass tunnel 11th Congress of the International Society for Rock Mechanics Ribeiro e Sousa, Olalla & Grossmann (eds) © 2007 Taylor...

... The sixth underground pumped powerhouse cavern is under construction now in Korea. For the stability analysis of the five underground powerhouses, finite element method was used. For this analysis, in-situ rock stresses were measured by overcoring method and horizontal to vertical stress ratio...

... problem. This approach has been used in the present study. In the present paper a study has been carried out for finding out factor of safety of a rock slope using finite element method. The results have been compared with those obtained by Limit Equilibrium method. The effects of joint orientation. joint...

.... The usefulness of 2 D Boundary Element Method, 2 D linear Finite Element Method and Photo elastic Technique for the estimation of stesses around (Figure in full paper) openings with particular reference to Tehri Power House for designing shape of underground (Machine hall) cavity have been discussed...

... back analysis contribution Rock mechanics consideration constitutive equation discontinuity Reservoir Characterization Wellbore Design displacement mechanical model Cundall rock block jointed rock rock mass deformation computational method finite element method General report...

... Reservoir Characterization hyperbolic constitutive model hyperbolic model investigation Belgrade stress-strain curve Upstream Oil & Gas marl application Neogene clay procedure Pannonian deformation finite element method triaxial test Sarmatian clay Strain Characteristic rock...

... face displacement vertical force unsupported distance metals & mining longwall face insufficient pressure support element fracture verification finite element method massif main parameter total vertical force hypothesis soutenement marchant Verification by the finite element...

..., sandstone etc. On the basis of this constitutive model the stability of circular and rectangular cavities is studied by means of the finite element method. It was pointed out by EGGER (1973) in an analytical study that the most important aspect of the material behaviour with respect to the stability...

... a study on the dynamic behavior of rock mass by finite element method (F.E.H), and calculated the seismic responses of abutment foundations for two arch dams. The results were compared with those obtained from in-situ measurements of ambient vibrations and geomechanic model tests. ANALYSIS HETHOD...

... ABSTRACT: Numerical modelling of complex geologic and mining conditions of Tkibuli-Shaor coal deposit region using the finite element method is performed and proven to be effective as the means for repetitive operative predictions of burst-free mining sequence. RESUME: On presente la...

... ABSTRACT: In this paper, the effects of water-inrush from floor stratum caused by coal mining have been deeply studied, and the mechanism and influential factors of water-inrush have been analysed comprehensively by the finite element method and in-situ measurements. It is shown...

... the finite element method for dimensioning support measures and adaptable construction methods. It should be noted, however, that according to the proposed technique those material properties are not necessarily to be real quantities, but to be equivalent values for evaluating the deformational behaviour...

... (Yamaguchi and Terashi,1971). The finite element method has been adopted as a powerful technique in the field of rock mechanics, being extensively used for the analysis of the plate loading test. The purpose of this paper is to study the general behavior of multi-layered soft sedimentary rock mass...