波浪作用下における底泥の圧密挙動に関する実験的研究 Experimental Study on Consolidation of Bottom Mud under Wave Action
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In the case where soft bottom mud with high water content over the liquid limit is fluidized by wave-induced pressure, cracks are generated in the surface of the mud. Focusing on the generation of cracks in the mud, a laboratory experiment on the consolidation of soft mud under wave action has been conducted. The characteristics of development of cracks to deeper area are investigated in terms of wave height and occurrence global slip-failure in the mud layer. It is elucidated that consolidation of soft mud is promoted remarkably under wave action because excess pore-water pressure tends to be accumulated around the tips of cracks by wave-induced repetitive shear stress and the pressure dissipates promptly by the drain effect of cracks. Also, the washout of fine particles from deep area of mud has been examined.
- Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering)
Journal of Japan Society of Civil Engineers, Ser. B2 (Coastal Engineering) 67(2), I_506-I_510, 2011
Japan Society of Civil Engineers