基于水动力模拟的城市浅水湖泊水循环研究  

Water Cycle Research of Shallow Lakes Based on Hydrodynamic Simulation

作　　者：卢婉莹[1] 毕佳成 陈星[1] 田传冲 陈玥[1] 

机构地区：[1]河海大学水文水资源学院,江苏南京210098 [2]西安电子科技大学计算机学院,陕西西安710126

出　　处：《水电能源科学》2015年第10期18-21,共4页Water Resources and Power

摘　　要：治理富营养化湖泊应首先改善湖泊的水动力条件,一般是通过连通引水和调整湖泊形态来实现,但连通引水对湖泊富营养化的改善效果时效较短,合理的湖泊形态对实现湖泊健康更为重要。以吴江市盛泽镇的潜龙渠为例,选择水龄作为描述湖泊水循环的指标,利用EFDC模型对不同条件下的水龄和流速及规划后湖泊形态的水动力情况进行模拟,同时根据模拟结果确定生态修复方案。结果表明,经过岸线和湖底高程调整后,潜龙渠水龄可以减少2~3d,水动力条件得到明显改善。The key of controlling lake-eutrophication is to improve its hydrodynamic conditions.In general,there are two methods to reach it.One is the river-lake connectivity,and another is adjusting its shoreline.However,the former effect towards the eutrophication won＇t last long.The rational shoreline plays more important role in a healthy lake.This paper took the Qianlong Lake of Wujiang City for an example to explore the effect by choosing water age as an indicator of water circulation.And then the EFDC model is used to simulate water ages and velocities in different conditions and shorelines.Besides,the wetland ecological restoration programs are determined based on the simulation results.The results show that after the adjusting of shoreline and lakebed height,the water ages were reduced 2-3days,and the hydrodynamic conditions were improved significantly.

关 键 词：浅水湖泊 水动力模拟 EFDC模型 湖泊形态 水龄 

分 类 号：TV213.3[水利工程—水文学及水资源]