水位变化条件下海湾水库盐分达标探讨

发布时间：2018-05-22 07:44

本文选题：海湾水库 + 盐分　；参考：《水科学进展》2017年05期

【摘要】：针对中国北方海湾水库间歇来水、连续取水和沉积物动态释盐的特点,建立水量与盐分耦合的数学模型,以青岛拟建的沐官岛水库为例,探讨水位变化条件下混合型海湾水库库水盐分的影响因素、超标风险与达标条件。模拟结果表明,在水库水位连续降低条件下,毫米量级的日蒸发量对库水盐分的累积效应显著。在不利水文条件下,受沉积物释盐、水分蒸发与人工取水的影响,混合型海湾水库长期存在盐分超标的风险。与水位不变时相反,水位降低时库水盐分浓度随着取水量的增大而升高;因此,当库水盐分存在超标风险时,可以通过减少日取水量实现库水盐分达标。为保障安全供水,在海湾水库设计与运营管理阶段,均需要综合考虑水量-盐分因素进行水库的日取水量调算。
[Abstract]:In view of the characteristics of intermittent water supply, continuous water intake and dynamic salt release from sediments of the North Bay Reservoir in China, a mathematical model of coupling of water quantity and salt content is established. The Muguandao Reservoir, which is to be built in Qingdao, is taken as an example. This paper discusses the influencing factors of salt content in mixed bay reservoir under the condition of water level change, the risk of exceeding the standard and the condition of meeting the standard. The simulation results show that under the condition of continuous lowering of reservoir water level, the cumulative effect of daily evaporation of millimeter on salt content in reservoir water is significant. Under the unfavorable hydrological conditions, the mixed bay reservoir has the risk of exceeding the standard salt content for a long time under the influence of salt release, evaporation of water and artificial intake of water. On the contrary, when the water level decreases, the salt concentration increases with the increase of water intake, therefore, when the water salt is in excess of the standard, it can be achieved by reducing the daily water intake. In order to ensure the safety of water supply, in the design and operation management of the Bay Reservoir, it is necessary to comprehensively consider the water-salt factor to adjust the daily water intake of the reservoir.
【作者单位】：青岛大学环境科学与工程学院;
【基金】：国家自然科学基金资助项目(51279075) 山东省自然科学基金资助项目(ZR2009EQ001)~~
【分类号】：TV697.21

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