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文章摘要
基于MIKE21的骆马湖汛期总磷模拟及优化调控研究
Simulation and Optimum Control of Total Phosphorus in Flood Season of Luoma Lake Based on MIKE21
  
DOI:
中文关键词: 总磷  MIKE21模型  数值模拟  优化调控  汛期  骆马湖
英文关键词: Total phosphorus  MIKE21 model  Numerical simulation  Optimum control  Flood Season  Luoma Lake
基金项目:国家自然科学基金资助项目(42001109);江苏省生态环境科研基金资助项目(JSJYC〔2022〕032号);江苏省自然科学基金资助项目(BK20201102);中国科学院流域地理学重点实验室开放基金资助项目(WSGS2020003);九江市科学技术局基础研究计划基金资助项目(S2022KXJJ001)
作者单位
王辉 江苏省宿迁环境监测中心 
雷蕊宇 中国科学院南京地理与湖泊研究所中国科学院大学 
樊冬玲 江苏省宿迁环境监测中心 
范宏翔 中国科学院南京地理与湖泊研究所 
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中文摘要:
      基于MIKE21构建了骆马湖二维水动力水环境耦合模型,分析不同调度方案下骆马湖总磷的变化程度。结果表明:所构建的水动力水环境耦合模型的R2为0.50~0.75,相对偏差为-2.4%~38.5%,能较好地模拟骆马湖主要国省考断面的水质变化;骆马湖汛期总磷主要受到上游来水情况的影响,汛期总磷浓度显著高于非汛期;合理利用滞洪闸可以显著降低汛期总磷浓度,国省考断面总磷浓度降幅可达26%~95%。在未来应用中,管理部门可以通过不同的闸坝调度组合来引导上游来水快速出湖,从而减轻对湖体的冲击。改善入湖河流水质,可有效遏制入湖营养物质和污染物质总量,减小湖泊水体污染负荷。
英文摘要:
      In this study,a two-dimensional hydrodynamic water environment coupling model for Luoma Lake was built based on MIKE21, and the changes in total phosphorus in Luoma Lake were analyzed under different control schemes. The results showed that the R2 of the model ranged from 0.50 to 0.75, with a relative deviation of -2.4%~38.5%, which could simulate the water quality changes at the main national and provincial examination sections in Luoma Lake. Total phosphorus in flood season of Luoma Lake was mainly affected by the upstream water flow. The concentration of total phosphorus in flood season was significant higher than that in non flood season. Reasonable use of flood detention gates could significantly reduce total phosphorus concentration in flood season, and total phosphorus concentration at the national and provincial sections could be reduced by 26%~95%. In the future application, the management department could guide the upstream water out of the lake quickly by dispatching different gate dams, so as to reduce the impact on the lake water. Improving the water quality of rivers into the lake could effectively reduce the total amount of nutrients and pollutants into the lake, and the pollution load of the lake.
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