水力发电学报2012，Vol.31Issue(2)：114-121,139,9.
温州浅滩二期围涂促淤方案数值模拟研究
Numerical study of silting-promotion plans in second phase reclamation of Wenzhou shoal
摘要
Abstract
Implementation of a silting-promotion plan in advance is important to reclamation project.Such plan could improve environmental conditions and promote sediment deposition in the reclamation region,saving backfill work and project investment.To predict sediment transport,this paper develops a multifactor mathematical model containing a wave module,current module,sediment transport module and bedform topography-change module,and takes into account all the radiate force,shear force,sediment transport capability of waves and the breaking effect.This model was applied to the second phase of Wenzhou shoal reclamation for a silting-promotion plan by comparing two alternatives,plan I with a dam breach and plan II without the breach.The results are as follow.1） With a silting-promotion plan the second-phase project causes a change only in the flux discharge and flux rate near the north and south river mouths,with little effect on the other regions nearby.2） A decrease of flow velocity everywhere in the silting-promotion zone favors sediment deposition.In terms of hydrodynamic conditions for sediment transport and slit-promoting effect,plan I is a little better than plan II,and the predicted average deposition depths are 0.59m and 0.51m,respectively.关键词
河流泥沙工程学/促淤方案/数值模拟/温州浅滩Key words
river sedimentation engineering/silting-promotion plans/numerical simulation/Wenzhou shoal分类
建筑与水利引用本文复制引用
郑敬云,陈永灿,李孟国..温州浅滩二期围涂促淤方案数值模拟研究[J].水力发电学报,2012,31(2):114-121,139,9.基金项目
水沙科学与水利水电工程国家重点实验室统筹项目 （）
国家自然科学基金项目 （）
