文章摘要
王瑶瑶, 逄勇, 黄亚文, 王健健.围隔导流对太湖蓬坑湾藻类富集效能的影响Journal of Water Resources and Water Engineering[J].,2015,26(6):42-47
围隔导流对太湖蓬坑湾藻类富集效能的影响
Impact on enrichment efficiency of enclosure diversion on algae in Pengkeng bay of Taihu lake
  
DOI:10.11705/j.issn.1672-643X.2015.06.008
中文关键词: 套网模型  围隔导流  叶绿素a  藻类  水环境  太湖
英文关键词: network model  enclosure diversion  Chlorophyll-a  alge  water environment  Taihu lake
基金项目:国家科技重大专项(2012ZX07101-010)
Author NameAffiliation
WANG Yaoyaoa, PANG Yonga,b, HUANG Yawena, WANG Jianjiana (河海大学 a.环境学院 b.浅水湖泊综合治理与资源开发教育部重点实验室 江苏 南京 210098) 
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中文摘要:
      针对围隔可改变水体流场、影响藻类漂移聚集,通过改变围隔布设角度和长度,探究不同围隔导流方案下藻类的富集效果。选取梅梁湾内的打捞点蓬坑湾作为研究对象,在建立太湖水量水质模型基础上,进一步建立太湖蓬坑湾套网模型,根据角度、长度两个因素,模拟6种布设方案下藻类富集效果,分析得到最佳角度、长度组合布设方案,并进一步考虑蓬坑湾地形和经济效益,提出适宜于蓬坑湾地形的优化方案。结果表明:围隔布设角度与水流方向呈120°时,湾内富集效果最佳;围隔布设长度越长,蓝藻收集区域越大,湾内富集效果越好;综合考虑地形特点和经济效益,最终确定围隔布设最佳方案为在上下湾口处分别布设一段围隔,布设角度与水流方向呈120°,上下湾口处围隔布设长度分别为100、30 m。研究成果对于改善湖泊水环境具有较好的应用前景。
英文摘要:
      Aimed at the situation that enclosure diversion can change the water flow field affect the drifting and aggregation of algae, this paper explored the enrichment efficiency of algae under different enclosure diversion plans through changing the angle and length of enclosure layout. Taking Pengkeng bay within Meiliang bay fishing area as the research object, the paper built the network model based on the coupled water quantity-quality model of Taihu lake.It simulated the enrichment efficiency under six different layouts according to the two factors of angle and length ,and got the best combined scheme. Furthermore,considering the terrain and economic benefits of Pengkeng Bay, it put forward optimum proposal that suits for the local terrain features. Results show that the enrichment efficiency is the best when the angle between enclosure layout and water flow is 120 degrees; the longer the enclosure is, the larger the collecting zone of blue-green algae gets, the better the enrichment efficiency becomes; the best plan is to set up a section of enclosure respectively in the upside and downside bay in comprehensively considering the terrain features and economic benefits, the angle between enclosure and water direation should be 120 degrees, and the length of upside and downside bay is 100 and 30 meters respectively. The result has a good application prospect for the improvement of water environment in Taihu lake.
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