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- W21071710 abstract "The hole erosion test was developed in order to study erosion phenomenon which occurs in cracks appearing in hydraulic infrastructures such as dams. This test enables describing experimentally the erosive characteristics of soils by means of an index which is called erosion rate and a critical tension which indicates the threshold of surface erosion initiation. The objective of this work is to give modelling of this experiment by means of a simplified analytical approach. The erosion law is derived by taking into account the flow regime. This law shows that the erosion occurring in the tube is controlled by a first order dynamics where only two parameters are involved: the characteristic time linked to the erosion rate and the stress shear threshold for which erosion begins to develop. RESUMEN El ensayo de erosion de tubo se desarrollo con el fin de estudiar el fenomeno de la erosion producida en las grie- tas que se hallan en determinadas obras hidraulicas como por ejemplo las presas. La prueba permite describir experimen- talmente las caracteristicas erosivas del suelo mediante un indice llamado velocidad de erosion y una tension critica que caracteriza el inicio del fenomeno. El objetivo de este trabajo es modelar este ensayo segun un enfoque analitico simplificado. La ley de evolucion del feno- meno de erosion se obtiene asi en funcion del regimen de drenaje. Esta norma muestra que la erosion originada en el tubo esta controlada por una dinamica de primer grado donde intervienen solo dos parametros: el tiempo caracteristico del feno- meno vinculado a la velocidad de erosion y el limite maximo a partir del cual se desencadena." @default.
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- W21071710 date "2009-01-01" @default.
- W21071710 modified "2023-09-26" @default.
- W21071710 title "Modelado analítico simplificado del ensayo normal de erosión de tubo" @default.
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