复杂型宽肩台堆石防波堤破坏机制试验研究

Model test and research of failure mechanism of complex rubble mound berm breakwater

采用断面物理模型试验对不同护面重量、不同级配的宽肩台堆石防波堤进行试验,研究影响该类型防波堤断面稳定性的主要因素,对于断面破坏结果采用3种不同方法进行描述,对不同方法的合理性加以阐述。试验结果表明,护面块石的形状、重量和级配是影响护面稳定性的决定性因素,采用等效冲刷宽度和平均冲刷宽度更能准确描述护面破坏程度。

Physical model tests with different weight of armor units and different gradations of rock materials for a rubble mound berm breakwater have been carried out to investigate the main factors that affect the sectional stability of this type of breakwater. Three different methods are used to describe the sectional failure and the reasonableness of the different methods is described. The experimental results show that the shape, weight and grading of armor rocks are the critical factors for stability.The equivalent and average scour width can be more accurate for describing the extent of surface damage of armor protection.