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Research on form of concentration leakage access by numerical simulationin weak structure plane of dike bedrock
Author(s): 
Pages: 37-42+48
Year: Issue:  4
Journal: Geotechnical Investigation & Surveying

Keyword:  dam; bedrock; concentration leakage; weak structure plane; numerical simulation ;
Abstract:  Seepage deformation in embankment has been much studied,but only focus on quaternary loose stratum.As the complexity of the geological conditions,in a proper condition the weak structure of the bedrock may bring seepage deformation and form the concentration leakage access.Then,a model for concentration leakage has been founded in bedrock weak structure.According to its different penetrability,the formation of concentration leakage access,and the variety of seepage flow field by numerical simulation is studied.The results show that concentration leakage access in bedrock weak structure has a certain impact on the happened piping in the dike,and could make the piping expand.Finally,an example validates the rationality of the numerical analysis in a certain extent.
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