Numerical Simulation of the Dynamic Process of Levee Foundation Piping
[1]WU Mengxi,DENG Qinfang,HUANG Yanbei.Numerical Simulation of the Dynamic Process of Levee Foundation Piping[J].Journal of Zhengzhou University (Engineering Science),2012,33(05):66-71,76.[doi:10.3969/j.issn.1671-6833.2012.05.015]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
33
Number of periods:
2012 05
Page number:
66-71,76
Column:
Public date:
2012-09-10
- Title:
- Numerical Simulation of the Dynamic Process of Levee Foundation Piping
- Keywords:
- levee foundation ; piping; fnite element method ; numerical simulation
- CLC:
- TV871
- DOI:
- 10.3969/j.issn.1671-6833.2012.05.015
- Abstract:
- Levee foundation piping is a complex and dynamie process. For the levee foundation with a thinlayer of relatively impermeable clay over the permeable sand bed, a finite element model is presented to simu-late the souree tracing development of internal soil piping. In eiew of the inlluence of sand concentration on theflow resistance, the coefficient of the equivalent permeability of the pipe flow is given according to the form ofIDarcy formula, ’Thus the simulation of both piping zone and the normal soil zone is unified to the conventionalseepage analysis method. The relationship of soil erosion rate of the pipe wall and the shear stress of the flowis introduced into the balance equation of sediment transportation to simulate the dynamic development of thepiping channel. The dynamic development of the piping channel with time is obtained by the solution of theseepage equation and the sediment transport equation, The simulation of a sand tank test on piping shows that,the model can quantitatively simulate the dynamic development of piping with time.
- References:
- -
- Similar References:
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Last Update:
1900-01-01