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《Geotechnical Investigation & Surveying》 2009-04
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Research on form of concentration leakage access by numerical simulationin weak structure plane of dike bedrock

Ye Hexin1,Chen Jiansheng2,Duan Xiangbao3(1.Institute of Water Conservancy and Hydropower Science of Guangdong Province,Guangzhou 510610,China;2.Research Academy,Hehai University,Nanjing 210098,China;3.Nanjing Hydraulic Research Institute,Nanjing 210029,China)  
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.
【Fund】: 国家自然科学基金面上项目(50579017/E090701)
【CateGory Index】: TV223.4
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