摘要
为深入研究深圳湾的水环境特性,提高污染事故的应急决策能力,基于EFDC模型建立了深圳湾水质模型;计算值和实测值具有较好的一致性,证明了该模型的有效性和可靠性;利用该模型模拟了深圳湾在潮周期内水环境指标的时空分布规律,结果显示水环境指标浓度和潮汐特性具有较强的相关性;提出了复杂流动情况下利用示踪剂长期变化趋势估算水力停留时间的方法,得到深圳湾整体水力停留时间为12.61d;讨论了特定情况下突发污染负荷的水环境响应特点,对3种不同应急处理措施的实施效果进行预测和评估,为深圳湾水环境保护提供了必要的依据.
Based on Environmental Fluid Dynamics Computer Code model,the Shenzhen Bay water quality model was established to study the characteristics of the water environment and improve the ability to respond to pollution accidents in Shenzhen Bay.The accuracy of the computational values as checked against the observed data indicates this model is reliable and efficient for its stated purposes.The established model simulated water quality parameter concentrations during several tidal periods to demonstrate the relationship between pollutant concentration distributions and tidal characteristics.To evaluate hydraulic retention time under complicated current conditions,a method was proposed based on the long-term tracer concentration evolution trend.The application shows the hydraulic retention time of the entire Shenzhen Bay averages about 12.61d.The environmental response to a sudden load due to an accident in certain cases was discussed quantitatively;the effects of three different emergency response measures were predicted and evaluated,providing important information for water protection management in Shenzhen Bay.
出处
《应用基础与工程科学学报》
EI
CSCD
2011年第1期52-63,共12页
Journal of Basic Science and Engineering
基金
国家自然科学基金(5090910850879096)
关键词
深圳湾
水质模型
水力停留时间
突发污染负荷响应
Shenzhen Bay
water quality model
hydraulic retention time
response to sudden pollution load
