摘要: |
冷源取水安全是核电运行安全的重要部分,会受到多种海洋堵塞物的威胁。为科学支撑滨海核电站取水口堵塞物防治工作,亟须掌握取水口的精细流场。走航和定点相结合的测量方式可同时获取流场的时空变化特征,适用于滨海核电站取水口精细流场的测量;走航测量宜采用具有底跟踪功能的ADCP,该设备具有测量精度高和数据处理简便的优点,然而在使用中应注重规范性以减少测量误差;以潮流为主的海域在涨急和落急时段的流场较稳定,在这段时间内进行走航数据插值可得到涨急和落急时段的精细流场;应用该方案获取某滨海核电站取水口的精细流场,测量结果显示取水口的流场较复杂,小范围流场受取水影响显著,呈现非潮流特征。 |
关键词: 滨海核电站 取水口 流场 走航 数据插值 |
DOI: |
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基金项目:国家自然科学基金青年科学基金项目(41806219、41806002). |
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Design and Example of Fine Flow Field Measurement for Coastal Nuclear Power Plant Water Intake |
SHI Wenqi,YUAN Shuai,LIU Yongqing,CAO Xuefeng,XING Chuan′xi |
National Marine Environmental Monitoring Center |
Abstract: |
The water intake of cold resource is an important part of the safety for nuclear power operation, and it could be threatened by different blockages from the sea. In order to scientifically support the prevention and control of blockages at nuclear power intakes, it is necessary to master the fine flow field structure in the sea area near the intakes. The observation method combined with underway and fixed point proposed in this paper can simultaneously obtain the spatiotemporal characteristics of the flow field, which is suitable for fine flow field measurement at the water intake of coastal nuclear power plant. ADCP with bottom tracking function should be used for navigation observation. The device has the advantages of high measurement accuracy and simple data processing. But the use of ADCP should be regulated to reduce observation errors. At tidal current dominated sea area, which the flow field is relatively stable during the flood tide and the ebb tide, the interpolation of the navigation data during this period can obtain precise flow field during the flood tide current and ebb tide current. By this method, the currents in a sea area around a coastal nuclear power plant intake were measured, and the time-varying curve of the fixed-point currents and the flow field during rising and falling times were obtained. Analysis of the observation data showed that, the flow field near the nuclear power plant intake was more complex, and the tidal field in some areas was significantly affected by water intake, reflecting non-tidal characteristics. |
Key words: Coastal nuclear power plant,Water intake,Flow field,Underway,Data interpolation |