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J. Cent. South Univ. (2018) 25: 2550-2566 DOI: https://doi.org/10.1007/s11771-018-3935-0 Dilation angle variations in plastic zone around tunnels in rocks-constant or variable dilation parameter... of Springer Nature 2018 Abstract: Dilation angle is a significant parameter needed for numerical simulation of tunnels. Even though dilation parameter is physically variable and dependent on confinement......
; 文献标识码:A 文章编号:1672-7207(2009)02-0498-06 Dilation effect of slope under over-loading on top of its surface Jiang..., Central South University, Changsha 410075, China) Abstract: In order to study the effect of dilation angle ψ to the stability of slope, a numerical model was founded in plane strain mode by FLAC3D......
decrease with the increase of the damage factor. The displacement of the cavity wall for the case with maximum plastic bulk strain is nearly twice than that with no dilation. Rock mass moves more toward the center for the case with larger damage factor and shear dilation. The area of the plastic region is larger when the damage factors are considered. The displacements in the surrounding rock mass......
of dilation angle on failure process and mechanical behavior for rock specimen with random material imperfections WANG Xue-bin (Department of Mechanics and Engineering Sciences, Liaoning Technical University, Fuxin 123000, China) Abstract: For rock specimen with smooth ends and with initially random material imperfections, the effects of dilation angle (DA) on the failure process and stress......
J. Cent. South Univ. Technol. (2009) 16: 0292-0296 DOI: 10.1007/s11771-009-0050-2 Slope stability analysis considering joined influences of nonlinearity and dilation YANG Xiao-li(杨小礼), HUANG Fu... to the associated flow rule. The stability factors decrease by 39.7% with nonlinear parameter varying from 1.0 to 3.0. Dilation and nonlinearity have significant effects on the slope stability factors......
J. Cent. South Univ. (2017) 24: 1602-1611 DOI: 10.1007/s11771-017-3565-y Combined influence of nonlinearity and dilation on slope stability evaluated by upper-bound limit analysis TANG Gao-peng(唐高朋... Heidelberg 2017 Abstract: The combined influence of nonlinearity and dilation on slope stability was evaluated using the upper-bound limit analysis theorem. The mechanism of slope collapse was analyzed......
Correlation between microstructure and thermal dilation behavior of amorphous Fe-Co-Zr-Mo-W-B alloys ZHANG Ji-teng(张集滕)1, WANG Wei-min(王伟民)1,2, LI Gui-hua(李桂华)1, MA Hai-jian(马海健)1, QIN...) at a heating rate of 10 K/min. The dilation measurement, as described by VLASAK et al[9], was applied to measuring the viscosity of glassy alloys. In this method, the overall length changes, Δl, may......
Numerical simulation of triaxial compression test for brittle rock sample using a modified constitutive law considering degradation and dilation behaviorTAN Xin(谭鑫)1, 2, KONIETZKY H2, FRüHWIRT T2(1...-dependent strength degradation and volume dilation laws, and is able to represent the nonlinear degradation and dilation behaviors of brittle rocks in the post-failure region. A series of triaxial compression......
support; interface dilation; failure mechanism; high strength; bolt-grouting technology 1 Introduction As a support technology in underground mining engineering, bolting has been used for more than 100..., as shown in Fig. 4, the relative shear slip between them makes the failure interface dilatancy, and it imposes normal dilatation stress on the surrounding rocks. The dilation stress can improve the shear......
of Civil and Architectural Engineering, Central South University, Changsha 410075, China) Abstract: Considering the influence of shear dilation on the stability of surrounding rock, mechanical... was computed, and the influence of dilation angle on the stability factor was analyzed. The results show that there is a critical dilation angle which impacts the displacement of surrounding rock......
