双层堤基渗透破坏机制和数值模拟方法研究

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Abstract This article summarized and analyzed the results of sand box test，simulated the seepage failure of the double-layer dike foundation. These experiments are focus on the affection of the different characteristics of simulated cover-materials on the seepage failure. Base on above analyzing，two criterions are derived. One is the stress strength，considering the seepage force. The other is the limited balance of the rotational moments of soil particle. Meanwhile according to the observed phenomena of experiments，the seepage failure is simulated by the two-dimensional axisymmetric finite element method(FEM). Compared the results between the experiment and numerical simulation，the above research method and two criterions on the seepage failure are reasonable，feasible.

Key words： soil mechanics double-layer dike foundation seepage failure numerical simulation finite element method(FEM)

Received: 18 March 2011

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http://www.rockmech.org/EN/Y2011/V30/I10/2128

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