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Internal Erosion: Analysis and Measurement of Hydraulic Stability of Reconstituted Laboratory Soils—Erosion Kinetics Analysis
Internal erosion is a major threat to dam instability. The processes involved in internal erosion are complex, evolutionary, and dependent on multiple parameters that can be coupled. The process is complex and far from fully understood. The process of particle migration during seepage is one of the mechanisms of internal erosion because it involves not only the release and transport of particles during erosion but also changes in hydrodynamic conditions due to the clogging process. In this paper, test results from an experimental study aimed at tracking the progression of erosion inside soil matrices are presented. Hydraulic and mechanical testing of constructed soil samples (mixture of sand and fines) was carried out to understand internal erosion, followed by measurement of hydraulic properties and quantification and characterization of eroded particles. Mechanical tests allowed to assess the consequences of internal erosion on mechanical characteristics of the medium. The research work undertaken in the context of this issue aimed to improve knowledge and better understand the kinetics of internal erosion. The study of the initiation and the development of internal erosion are carried out on materials consisting of mixtures involving different kind and content of fines. At the end of erosion tests, particle size analysis of samples carefully taken from different layers in the specimen was performed. This article presents the first results of performed tests to validate this experimental approach.
Internal Erosion: Analysis and Measurement of Hydraulic Stability of Reconstituted Laboratory Soils—Erosion Kinetics Analysis
Internal erosion is a major threat to dam instability. The processes involved in internal erosion are complex, evolutionary, and dependent on multiple parameters that can be coupled. The process is complex and far from fully understood. The process of particle migration during seepage is one of the mechanisms of internal erosion because it involves not only the release and transport of particles during erosion but also changes in hydrodynamic conditions due to the clogging process. In this paper, test results from an experimental study aimed at tracking the progression of erosion inside soil matrices are presented. Hydraulic and mechanical testing of constructed soil samples (mixture of sand and fines) was carried out to understand internal erosion, followed by measurement of hydraulic properties and quantification and characterization of eroded particles. Mechanical tests allowed to assess the consequences of internal erosion on mechanical characteristics of the medium. The research work undertaken in the context of this issue aimed to improve knowledge and better understand the kinetics of internal erosion. The study of the initiation and the development of internal erosion are carried out on materials consisting of mixtures involving different kind and content of fines. At the end of erosion tests, particle size analysis of samples carefully taken from different layers in the specimen was performed. This article presents the first results of performed tests to validate this experimental approach.
Internal Erosion: Analysis and Measurement of Hydraulic Stability of Reconstituted Laboratory Soils—Erosion Kinetics Analysis
Lecture Notes in Civil Engineering
Agnihotri, Arvind Kumar (editor) / Reddy, Krishna R. (editor) / Bansal, Ajay (editor) / Jalil, Ahmed (author) / Benamar, Ahmed (author)
International Conference on Environmental Geotechnology, Recycled Waste Materials and Sustainable Engineering ; 2023 ; Jalandhar, India
2025-02-02
12 pages
Article/Chapter (Book)
Electronic Resource
English
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A Stress-controlled Erosion Apparatus for Studying Internal Erosion in Soils
| Online Contents | 2011