人工浅水湖泊水动力和水体交换特性研究  

Study on Hydrodynamic and Water Exchange Characteristics of Artificial Shallow Lakes

作　　者：张少雄 何晗笑 张力霆 李国林[3] 李庆林 ZHANG Shaoxiong;HE Hanxiao;ZHANG Liting;LI Guolin;LI Qinglin(College of Civil Engineering,Shijiazhuang Tiedao Univ.,Shijiazhuang 050043,China;Key Laborato-ry of Roads&Railway Engineering Safety Control,Ministry of Education,Shijiazhuang Tiedao Univ.,Shiji-azhuang 050043,China;China Railway 19th Bureau Group Fifth Engineering Co.,Ltd,Dalian 116100,China)

机构地区：[1]石家庄铁道大学土木工程学院,石家庄050043 [2]道路与铁道工程安全保障省部共建教育部重点实验室(石家庄铁道大学),石家庄050043 [3]中铁十九局集团第五工程有限公司,大连116100

出　　处：《三峡大学学报（自然科学版）》2022年第5期9-13,共5页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金(51608279);河北省重点研发计划(20375409D);河北省水利厅水利科研与推广项目(2021-34)。

摘　　要：为了营造良好的生态环境和文化环境,各地开挖了许多具有各种吉祥寓意的人工湖泊,这些湖泊具有造型特殊、水深较浅等特征,这些特征会导致水动力和水体交换能力较差.为了探究人工浅水湖泊的水动力和水体交换情况,以河南省人工浅水湖泊如意湖为例,建立水动力和水体交换模型,结果表明:在设计引水流量工况下,湖内流速场整体较为平顺,存在两个逆时针环流,在引水末时刻水体交换率为99.83%;水体流速随着流量的增加而增大,在主流区流速随流量增长较快,在湖湾区流速增长较慢,在各流量下湖内都存在环流现象,环流的位置和大小不随流量而改变;水体交换率随着流量的增加而增大,当引水流量大于0.8m3/s时,引水3d后所有水体交换率为100%,水体交换率随引水时间增加先快速增加,随后增长趋于平缓.In order to create a good ecological and cultural environment,many artificial lakes with various auspicious meanings have been excavated all over the country.These lakes have the characteristics of special shape and shallow water depth,which will lead to poor hydrodynamic and water exchange capacity.In order to explore the hydrodynamic and water exchange of artificial shallow lakes,taking Ruyi Lake,an artificial shallow lake in Henan Province as an example,a model was established.The results show that:under the design diversion flow condition,the velocity field in the lake is relatively smooth as a whole,and there are two counterclockwise circulations,and the water exchange rate is 99.83%at the end of the diversion.The velocity of water increases with the increase of flow rate,The velocity in the mainstream region increases rapidly with the flow rate,and the velocity in the bay region increases slowly.There is a circulation phenomenon in the lake under each flow rate,and the position and size of the circulation do not change with the flow rate.The water exchange rate increases with the increase of water flow.When the water diversion flow is greater than 0.8 m3/s,all the water exchange rates are 100%after three days of water diversion.The water exchange rate increases rapidly first and then slowly with the increase of water diversion time.

关 键 词：人工湖泊 浅水湖泊 水动力 水体交换 数值模拟 

分 类 号：TV133[水利工程—水力学及河流动力学]