本文从环境工程的角度讨论了岸滩侵蚀问题中建立分析模型的基本框架。讨论了岸滩岩土介质在风浪潮作用下 ,根据不同的侵蚀准则所建立的岸滩沉积物在近海迁移和传输的模型。得出了岸滩的侵蚀、演变过程由三相组成的结论 ,第一相是与饱和多孔介质经受动力载荷变形和损伤相联系的固态相 ;第二相是关于介质侵蚀和剥离的流 -固态混合相 ;第三相是流动和沉积物运输的流体相。从分析讨论还可以看出 ,岸滩侵蚀演化的模拟分析可在岸滩介质的动力固结、悬浮介质扩散漂移及海浪流体动力学理论相互交叉的基础上 ,针对海岸环境工程问题中的观念和现象来建模并完成。研究表明 ,在分析海滩侵蚀和海岸演化过程的机理时 ,采用海洋环境工程学中的相关方法可以得到更符合实际状况的结果。用损伤力学方法建摸研究岸滩介质的侵蚀和沙化过程 ,可以将海岸沉积物的迁移速率描述为海床面上的等效摩擦剪应力、损伤状态、侵蚀参数及介质的孔隙冲蚀率的函数。在岸滩侵蚀和演化机理研究中将海岸沉积物的纵向迁移和横向迁移理论相结合的模型有一定的优越性 ,这为岸滩侵蚀与海岸演变提供了定量的分析方法 This paper discusses the basic framework for establishing an analytical model for beach erosion from the perspective of environmental engineering. This paper discusses a model of beachbank sediment migration and transport in coastal waters established by different erosion criteria under the action of wind wave. The conclusion is drawn that the evolution of the shore beach is composed of three phases. The first phase is the solid phase associated with the deformation and damage of saturated porous media subjected to dynamic load. The second phase is related to the flow-solid state of media erosion and stripping Mixed phase; the third phase is the fluid phase in which fluid and sediment transport. It can also be seen from the analysis and discussion that the simulation analysis of the beach erosion evolution can be based on the cross-over of the dynamic consolidation of the beach media, the diffusion drift of the suspended media and the wave fluid dynamics theory, Phenomenon to model and complete. Research shows that when analyzing the mechanism of beach erosion and coastal evolution, the relevant methods in marine environmental engineering can be used to obtain more realistic results. Using damage mechanics method to study the erosion and desertification process of beach media, the migration rate of coastal sediments can be described as equivalent friction shear stress, damage state, erosion parameters and pore erosion rate function. In the research on the mechanism of beach erosion and evolution, there is a certain superiority in combining the model of longitudinal migration and horizontal migration of coastal sediments, which provides a quantitative analysis method for shoreline erosion and coast evolution