The evaluation of three-dimensional effects on slope stability by the strength reduction method

In the design process of the earth-rock dam, the slope stability problem was always focused on. The shear strength of rockfill in the earth-rock dam had strong nonlinear characteristics. The characteristic directly affected the factor of safety (FOS) of stability of dam slope and the determination of the critical slip surface. The shear strength parameter of rockfill was related to the minimum principal stress σ3 closely. And the value of σ3 had close relationship with the deformation characteristics of filling material and the process of dam filling etc. Strength reduction method has been widely used in solving the FOS of slope stability, and this method has the advantage on the searching of the critical slip surface. Combining the deformation and stress analysis of earth-rockfill dam filling process and the strength reduction method, this paper proposes a comprehensive method of dam slope stability analysis.

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Application of FLAC strength reduction method to analysis of slope stability

2011 Second International Conference on Mechanic Automation and Control Engineering ◽

10.1109/mace.2011.5988301 ◽

2011 ◽

Author(s):

Baocheng Yang ◽

Cunquan Nan

Keyword(s):

Slope Stability ◽

Reduction Method ◽

Strength Reduction ◽

Strength Reduction Method

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The Simulation of Foundation Pit Construction on Basis of Strength Reduction Method and the Research on its Stability

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.926-930.699 ◽

2014 ◽

Vol 926-930 ◽

pp. 699-702

Author(s):

Tao Yang

Keyword(s):

Reduction Method ◽

Geotechnical Engineering ◽

Three Dimensional ◽

Strength Reduction ◽

Good Stability ◽

Stress And Strain ◽

Strength Reduction Method ◽

Research Model ◽

Foundation Pit ◽

High Security

In geotechnical engineering, the support pattern regularly applied is continuous wall, whose high security, strong adaptability, good stability and other characteristics have been widely appraised in engineering circles. This paper use Midas to build the three-dimensional research model on varied construction stages of foundation pit, in which the foundation pit applies the scheme of combing continous wall and inner support. Further more, this paper makes estimation on the machenical stability in varied construction stages of foundation pit and use strength deduction method to analyze the stress and strain conditions of foundation pit in different working states, the results acquired from which researches have certain reference to the engineers.

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Static and Dynamic Stability Analysis on Artificial Rock Mass Slope Using Strength Reduction Method

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.368-370.1774 ◽

2013 ◽

Vol 368-370 ◽

pp. 1774-1780

Author(s):

Shi Yan ◽

Hai Tao Du ◽

Qi Le Yu ◽

Han Yan

Keyword(s):

Rock Mass ◽

Stability Analysis ◽

Slope Stability ◽

Dynamic Stability ◽

Rock Slope ◽

Reduction Method ◽

Strength Reduction ◽

Strength Reduction Method ◽

Artificial Rock ◽

Static And Dynamic Stability

This paper focuses on stability analysis of an artificial rock mass slope by a nonlinear finite element method (FEM). For a long time, rock slope stability problem is always an important research issue in the field of geotechnical engineering, which is related to human life and property safety as well as engineering security and efficiency. Therefore, the stability analysis and evaluation on rock slope is of great significance. The static and dynamic stability analysis on the artificial rock mass slope of WuAn power plant in China is carried on respectively in this paper by using the strength reduction method and FLAC3D software. In this analysis, static and dynamic instability criterions are enumerated, and the static and dynamic safety factors are calculated with the developed criterions of the displacement mutation, respectively. The analysis results show that the artificial rock mass slope is basically stable. It indicates that analyzing slope stability with strength reduction method is feasible.

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