砂质海岸突堤式建筑物下游岸线变形数学模型

Numerical modelling of coastline deformation for sandy beach at downstream of a jetty

提出了一种改进的砂质海岸岸滩演变的“一线理论”数学模型 .该模型中考虑了岸滩演变过程中岸滩坡度变化的影响 ,并采用波浪折射、绕射和反射联合计算数学模型模拟掩护区的波浪场 ,提高了波浪计算的精度 .实例计算表明 ,在验证资料比较充分的条件下 ,该数学模型计算结果的可靠度较高 ,可供实际工程规划和设计时参考使用 .

A reformed numerical model based on one line theory for beach deformation is presented. In this model, the change of slope of beach during beach procession is considered. A wave numerical model combined with wave refraction, diffraction and reflection is used to simulate wave climate to increase the numerical accuracy. The results show that the numerical model has a good precision based on enough field data. The results can be applied to real engineering.