Low crested structures built with homogeneous stones or precast blocks serving the purpose of wave attenuation are often referred to as reef breakwaters. The present work involves laboratory investigation of hydrodynamic pressures exerted on reef breakwaters made of gabion boxes in submerged conditions. The study provides an understanding of nature and magnitudes of pressures in and around the reef structures depending on the configuration of choice. The knowledge on the wave induced pressure on porous structures is important to better understand the stability and flow around the coastal structures. Such reef based structures are also being adopted as mitigation against sea-level rise and to reduce loads exerted on existing maritime structures. The pressure reduction achieved on the leeside of the structure is also examined in the present study. This is of immediate interest for preserving the existing coastal structures in a serviceable condition, which are prone to more severe conditions than considered in the design. The wave-induced dynamic pressures on the submerged porous structure are analyzed and discussed in the present work for varying reef and wave parameters. This experimental study involves analysis of wave-induced pressure on the seaside, leeside and at the mid-section of the porous reef breakwaters. The investigation has been carried forward to bring out major parameters of concern for the present problem and their ranges. The study demonstrates that a pressure reduction of about 70% is achievable by the use of reef breakwaters and this clearly indicates the application of such structures for coastal resilience.

由均质的石头或预制砌块建造的低波峰结构，通常被称为礁石防波堤，用于消波。目前的工作涉及在水下条件下对由石笼箱制成的礁石防波堤上施加的水动力压力的实验室研究。这项研究根据选择的配置，对珊瑚礁结构内外的压力的性质和大小有了了解。关于波浪在多孔结构上引起的压力的知识对于更好地理解沿海结构周围的稳定性和流动非常重要。这种基于礁石的结构也被用作缓解海平面上升和减轻施加在现有海事结构上的负载的方法。在本研究中还检查了在结构背侧实现的压力降低。对于将现有的沿海结构保持在可使用的条件下，这是立即引起关注的问题，因为这些沿海结构比设计中所考虑的条件更严峻。在目前的工作中，针对变化的礁石和波浪参数，对淹没的多孔结构上的波浪引起的动压力进行了分析和讨论。这项实验研究包括分析波浪在海边，背风处和多孔礁防波堤中段的压力。已经进行了调查以提出当前问题及其范围所关注的主要参数。该研究表明，通过使用礁石防波堤可以将压力降低约70％，这清楚地表明了此类结构在沿海防灾中的应用。