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首页> 外文会议>Geotechnical frontiers >Earthquake-Induced Water Level Rise: Implications for Tsunami-Induced Sediment Instability in Coastal Areas
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Earthquake-Induced Water Level Rise: Implications for Tsunami-Induced Sediment Instability in Coastal Areas

机译：地震引起的水位上升：对沿海地区海啸引起的沉积物不稳定的影响

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摘要

Coastal areas are vulnerable to the earthquake-tsunami multi-hazard, which can cause significant sediment instability near the shoreline, leading to potential damage or collapse of critical coastal infrastructure. During the earthquake, sediment instability can occur via residual liquefaction, and the water level can rise following the cessation of strong shaking. The water level rise has significant implications for the ensuing tsunami-induced sediment instability. Herein, a modeling framework for the aforementioned problem is established using two different pore water pressure generation models. The water level rise is estimated for a hypothetical sediment profile and earthquake motion for both fully saturated and partially saturated conditions. The results show that water level rise can be significant just onshore, which is validated with post-earthquake field reconnaissance. The results imply that tsunami-induced sediment instability will be significantly affected by the earthquake-induced sediment instability. Future work will focus on the interaction between earthquake-induced and tsunami-induced sediment instability.
机译：沿海地区很容易遭受地震-海啸的多重危害，这可能会导致海岸线附近的泥沙不稳定，从而可能导致关键沿海基础设施遭受破坏或倒塌。在地震过程中，残余的液化可能会导致沉积物不稳定，并且在强烈震动停止后水位会上升。水位上升对随之而来的海啸引起的沉积物不稳定具有重要意义。在此，使用两个不同的孔隙水压力产生模型建立了针对上述问题的建模框架。对于完全饱和和部分饱和条件下的假设沉积物剖面和地震运动，估计水位上升。结果表明，水位升高仅在陆上就很明显，这在震后野外勘测中得到了验证。结果表明，海啸引起的沉积物失稳将受到地震引起的沉积物失稳的显着影响。未来的工作将集中在地震诱发和海啸诱发的沉积物不稳定性之间的相互作用。

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