基金国家自然科学基金面上项目(No.51479097No.51279086)+3 种基金水沙科学与水利水电工程国家重点试验室科研项目资助(No.2016-KY-2)supported by the General Program of National Natural Science Foundation of China(5147909751279086)the Research Project of State Key Laboratory of Hydroscience and Hydraulic Engineering(2016-KY-2)