Stability Research of Lanan Rock-Fill Dam Based on Limit Equilibrium Method

Abstract:

There are corresponding stability criterions for limit equilibrium method, which is simple to implement and has been used for long-term. But this method is only considered the equilibrium of system without considering deformation, compatibility conditions and material constitutive. To improve the method, which is used to analysis the stability of Lanna dam, was proposed to optimize the boundary conditions, consider the discontinuity between the media in junction and add additional stress to consider the effects of buoyancy and seepage. After completion, tests showed that this approach could overcome limit equilibrium method’s shortcoming and describe the discontinuous characteristics of media naturally, such as dislocation, opening, slip and so on. And the result is reliable.

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 1991-1995
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.1991
• Online since: May 2012
• Authors: Lin Xiang Pang, Lan Qiao, Yuan Li
• Keywords: Lanan Dam, Limit Equilibrium, Stability Research

References

[1] G.Y.Li,L.S. Wang Z.K.Mi:Research on stress-strain behavior of soil core rock-fill dam.Chinese Journal of Rock Mechanics and Engineering.Vol.23(2004),p.1363[in Chinese]

[2] Y.J Qian, S.S Chen:Verification of numerical simulation results of stress and deformation of core-wall dams.HYDRO-SCIENCE AND ENGINEERING. Vol .4(2005),p.11[in Chinese]

[3] B.L. Zhu Z.J. Shen,in:Computational Soil Mechanics,Shanghai Science and Technology(1990),in press[in Chinese]

[4] Q.F.Lv,Z.Z. Yin:Nonlinear strength parameters on the stability of the high embankment dam. Chinese Journal of Rock Mechanics and Engineering.Vol.23(2004),p.2708[in Chinese]

[5] C.S. Desai M.M. Zaman:Thin-layer element for interfaces and joints. International Journal for Numerical and Analytical Methods in Geomechanics.Vol.8(1984),p.19

DOI: 10.1002/nag.1610080103

[6] C.S. Desai Y.Z.Ma:Modeling of joints and interfaces using disturbed state concept. International Journal for Numerical and Analytical Methods in Geomechanics. Vol.16(1992),p.625

DOI: 10.1002/nag.1610160903

[7] G.L. Sivakumar Babu,Amit Srivastava, V. Sahana: Analysis of stability of earthen dams in kachchh Region.India. Engineering Geology. Vol.94 (2007),p.15

DOI: 10.1016/j.enggeo.2007.05.007

[8] T Shen G.Y.Li,Y Li: Numerical analysis of joint types between toe slab and foundation of CFRD in alluvial deposit layer.Chinese Journal of Rock Mechanics and Engineering.Vol.24(2005),p.2[in Chinese]