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Backward erosion piping is a prominent failure mechanism in water-retaining structures. It is a phenomenon in which shallow pipes are formed in an upstream direction at the interface of a sandy aquifer and an impermeable top layer. Experiments were conducted at two different scales to investigate the erosion mechanism near the pipe tip that causes the pipe to lengthen at the grain scale. The erosion...
Backward erosion piping is an important failure mechanism in both dikes and dams where sandy layers are covered by a cohesive layer. Shallow pipes are formed at the interface of the sandy or silty layer and the cohesive cover layer. As a pipe is formed, a zone of disturbed sand grains forms around it, which may have an effect on the equilibrium of forces on the grains at the tip and walls of the pipe...
This study was carried out in the Xujiawan watershed in Sichuan Province, China. The area is characterized by easy weathering of bedrock (sedimentary sandstone and shale) and vulnerability to erosion due to coarse soil texture and weak soil structure. The objective of this study was to understand the dynamics of nitrogen (N) and phosphorus (P) losses during typical storm events. The results showed...
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