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Stability of submerged rock berms exposed to motion of liquefied soil in waves

机译：波浪作用下液化土壤运动对淹没岩壁的稳定性

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摘要

The paper describes the results of an experimental study on the behaviour of a submerged rock berm in liquefied backfill soil. The soil is liquefied by waves, and the rock berm is subject to the orbital motion of the liquefied soil. The soil used in the experiments was silt with d_(50)=0.075 mm. Various berm materials were used, stones of size 0.74-2.5 cm, plastic balls of size 3.6 cm, brass of size 2.5 cm and steel of size 1.0 cm. The experiments show that rock berms that are stable under very large waves can be unstable when they are exposed to the motion of liquefied soil. The limited data obtained in the study were plotted as a function of the mobility number versus the Keulegan-Carpenter number for the range of the Reynolds number of the tests. The critical mobility number corresponding to the incipient motion of the berm stones is determined. Recommendations are made as to how the present findings can be implemented in practice.
机译：本文描述了液化回填土中淹没岩床的行为的实验研究结果。土壤被波状液化，岩壁受到液化土的轨道运动的影响。实验中使用的土壤为d_（50）= 0.075 mm的淤泥。使用了各种护堤材料，0.74-2.5厘米大小的石头，3.6厘米大小的塑料球，2.5厘米大小的黄铜和1.0厘米大小的钢。实验表明，在大浪下稳定的岩石护堤在暴露于液化土壤的运动中可能不稳定。在研究的雷诺数范围内，将研究中获得的有限数据绘制为迁移率数与Keulegan-Carpenter数的函数。确定与护堤石的开始运动相对应的临界迁移率数。建议如何在实践中实施本研究结果。

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