中文摘要：

寒冷地区河流冬季常出现冰塞,伴随其形成和演变往往发生凌洪灾害。因此,对河冰的形成及演变相关问题进行研究具有重要的意义。冰塞堆积演变具有高度的三维特征,将三维贴体坐标变换应用于冰塞演变过程,成功地解决了冰塞面不规则形状给河冰数值模拟带来的相关困难。

英文摘要：

Ice jam often develops in cold region river in winter, it results in ice-flooding. It is very important to study the process of ice jam formation and evolution. Ice jam development is characteristic of strong 3-dimensional process. The 3-dimensional non-staggered curvilinear grid method is utilized in this study to model the river ice jam development process. This method eliminates the difficulties of ice jam numerical simulation caused by the irregular boundary of ice jam.