土坝渗流侵蚀机制及有限元计算

doi:10.13722/j.cnki.jrme.2014.1156

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Abstract The formation and the influencing factors of seepage erosion in soil and the relationship between the damage to the soil structural strength and the erosion ratio were systematically analyzed. The relationship of the constituents of soil grains，the constitutive equation and governing equations of seepage erosion in the earth structure were established. A relationship of structural strength damage of soil due to seepage erosion was presented. The partial differential equations for the coupled multiple fields based on the governing equations were solved with the finite element method. A core dam was analyzed. The results of the numerical analysis validated the governing equations and the relationship between the damage elastic modulus and erosion ratio.

Key words： seepage mechanics earth internal seepage erosion constitutive equation governing equation finite element method

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2014.1156 OR http://www.rockmech.org/EN/Y2015/V34/I05/1031

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