According to sine derivative curve which is put forward by langbein W B,Leopold L B,the situation of mountain river meanders in Yalujiang is analyzed,and a new solution is selection of curvature r.

• 通过利用拉宾和里奥普提出的正弦派生曲线理论,对鸭绿江山区河流弯道情况进行分析,探讨选取山区河流弯道水流弯曲半径新的方法,采取具有变化曲率半径的正弦派生曲线来规划航道走向,起到了优化环境的作用。