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- W3132128533 abstract "Abstract Seepage-induced piping erosion is observed in many geotechnical structures. This paper studies the piping mechanism of gap-graded soils during the whole piping erosion failure process under a supercritical hydraulic gradient. We define the supercritical ratio R i and study the change in the parameters such as the flow velocity, hydraulic conductivity, and fine particle loss with R i . Under steady flow, a formula for determining the flow velocity state of the sample with R i according to the fine particle content and relative density of the sample was proposed; during the piping failure process, the influence of R imax on the rate at which the flow velocity and hydraulic conductivity of the sample increase as R i decreases was greater than that of the initial relative density and the initial fine particle content of the sample. Under unsteady flow, a larger initial relative density corresponds to a smaller amplitude of increase in the average value of the peak flow velocity with increasing R i . Compared with the test under steady flow, the flow velocity under unsteady flow would experience abrupt changes. The relative position of the trend line L of the flow velocity varying with R i under unsteady flow and the fixed peak water head height point A under steady flow were related to the relative density of the sample." @default.
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- W3132128533 date "2021-02-11" @default.
- W3132128533 modified "2023-09-26" @default.
- W3132128533 title "Experimental Study on the Piping Erosion Mechanism of Gap-Graded Soils Under a Supercritical Hydraulic Gradient" @default.
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- W3132128533 doi "https://doi.org/10.21203/rs.3.rs-176056/v1" @default.
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