内腐蚀
岩土工程
土壤水分
腐蚀
同种类的
流量(数学)
材料科学
机械
多孔性
液压头
多孔介质
环境科学
土壤科学
地质学
热力学
物理
古生物学
作者
Ahmed Benamar,Abdelghani Seghir
出处
期刊:Journal of Porous Media
[Begell House Inc.]
日期:2017-01-01
卷期号:20 (3): 205-216
被引量:3
标识
DOI:10.1615/jpormedia.v20.i3.20
摘要
This paper focuses on the experimental and analytical study devoted to internal erosion (suffusion) of sand-clay mixtures made of different fines contents and tested under head controlled flow. The investigations aim to evaluate a simplified analytical model using experimental results obtained from laboratory column tests. The analytical model is based on the integration of the transport equation of particles in a homogeneous porous medium subjected to different hydraulic gradients. The adjustment of the derived analytical solution with experimental results, carried out on several samples under different conditions, allowed us to identify the model parameters using empirical expressions. The results showed mainly that the detachability parameter deceases when fines content increases. In addition, the erosion trigger law has been adapted to the volume erosion and is used to estimate the critical shear stress and the internal erosion coefficient of the studied soil.
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