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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摘要针对土体内部渗流侵蚀这类特殊工程地质力学问题，系统研究土体渗流侵蚀形成机制、影响因素以及渗流侵蚀引起土体结构强度损伤的量变关系。通过分析渗流侵蚀机制，建立土体内部渗流侵蚀各组分关系，建立土体内部渗流侵蚀本构及控制方程，给出渗流侵蚀引起的土体结构强度损伤关系。以心墙坝为例，利用有限元数值计算分析方法，将所建立的控制方程进行数值计算，对渗流侵蚀进行分析。有限元数值分析计算结果很好地验证了所建立的土体内部侵蚀控制方程、侵蚀损伤弹性模量与侵蚀率之间的函数关系的正确性。

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关键词 ：渗流力学, 土体内部侵蚀, 本构方程, 控制方程, 有限元法

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

引用本文:

张兴胜1，宋丽娟1，董金玉1，于怀昌1，黄志全1，王建秀2，WONG Henry3，王江锋1，杨永香1. 土坝渗流侵蚀机制及有限元计算[J]. 岩石力学与工程学报, 2015, 34(05): 1031-1038.
ZHANG Xingsheng1，SONG Lijuan1，DONG Jinyu1，YU Huaichang1，HUANG Zhiquan1，WANG Jianxiu2，. MECHANISM OF SEEPAGE EROSION AND FINITE ELEMENT CALCULATION OF EARTH DAM. , 2015, 34(05): 1031-1038.

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

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