Modeling of Internal Erosion and Initiation of Piping Phenomenon in a Dam
Journal Title: American journal of Engineering Research - Year 2018, Vol 7, Issue 10
Abstract
The initiation of a piping phenomenon which may occur under the dam is modeled. The model constructed to represent this problem is bi-dimensional. It combines the Darcy equation, the mass conservation equation for the fluid phase, the plane strain elasticity equation and a classical law of internal erosion. The conditions favoring the piping initiation are analyzed as function as the various parameters involved in the problem.The erosion equation is solved. The results obtained make it possible to plot under Comsol the isovalues of the porosity. Previous studies’ model assume that the fluid flow and erosion occur in a matrix that remains rigid at time t so that the deformation of the skeleton does not directly have any effect on them. The initiation of piping phenomenon is characterized by a sudden local variation in the porosity. Its development cannot be grasped through this simple system which assumes that the soil is homogeneous.
Authors and Affiliations
Drame Aboubacar Sidiki a,b, Wang Li a,b ,, Camara Tambac
Keywords
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