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- #Determine significant differences flac3d software#
- #Determine significant differences flac3d license#
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#Determine significant differences flac3d license#
The license term may extend over a period of time of a monthly lease, an annual lease, or in perpetuity.The license type may be either a standard or network USB security key (i.e., hardware lock) or a web license (for 3DEC 7+, FLAC3D 7+, and PFC 6+).
#Determine significant differences flac3d software#
Furthermore, stability analysis and optimization of tunnels support system performed in this study using the real topography data. Itasca software licenses (and any enabled options) have two parts, the License Term and the License Type. Figure 5.1 compares the crack initiation stress exceeding in new and old FLAC3D model at the level of 1.5 meters below the tunnel floor. In the case of ignoring real topography, the error function obtained from monitoring and numerical method results are between 1.5 and 10 times more than the case of considering real topography, suggesting the significant role of real topography. Next, another numerical model was built to study the role of real topography and the obtained modeling results were compared for cases with and without real topography where a significant difference was obtained between the results. For this aim, 8 instrumentation sections were modeled using FLAC3D 5.0 and the real topography was determined. The next significant difference between Hoek-Brown and Mohr-Coulomb is the. The purpose of the present research is to study the role of real topography on the obtained results of back analysis and determine the accurate geomechanical parameters of the rock mass using back analysis based on convergence meter data. Experience from the mine was used to assess the accuracy of the FLAC3D model. This issue is especially critical for cases when two tunnels or underground structures are constructed next to each other. This new model can successfully reflect the damage-induced stiffness degradation at large deformation, and can provide a theoretical basis for stability design and evaluation of underground excavation.The Effect of Topography on Stability of Shallow Tunnels Case Study: The Diversion and Conveyance Tunnels of Safa DamÄue to ignoring the role of real topography in the numerical modeling carried out for back analysis and considering that in the tunnel longitudinal profile the distance of tunnel roof to the ground surface is the maximum, some results inaccuracy may occur. The reason for the difference is unclear, but it indicates that stresses. 3 CALCULATING METHOD AND PRINCIPLE FLAC3D is a large explicit finite-difference program. This study shows that the simulated results using the proposed new constitutive model matched much more closely with the measured field data, with an average error less than 5%. In this thesis, a FLAC 3D model of the mine was developed to determine if there. The direction of the maximum horizontal principal stress is N53W. Geostatic vertical stresses comparison between FLAC3D methods and hand. The obtained results of these models were analyzed and compared with field data. In this thesis, pavement loading responses of five different large-scale pavement. The excavation-induced stress in rocks was calculated by FLAC 3D using the Mohr-Coulomb model, conventional strain model, and the proposed modified model. This study analyzes and discusses various attenuation parameters in the proposed nonlinear plastic constitutive model using FLAC 3D software. In order to better reflect the nonlinear stress-strain behavior of rock, especially for the post-peak failure behavior, with expected stiffness degradation and large deformation, a modified constitutive model of rock considering stiffness degradation and dilatation behavior at large deformation was proposed in this study. The existing constitutive models of rock with strain softening cannot successfully reflect the damage-induced anisotropy and nonlinearity of the post-peak failure behavior under progressive loading.