潮汐作用下滨海地下卤水开采区水盐迁移模式及影响因素OA
Tidal-Driven Water-Salt Transport Dynamics in Coastal Subsurface Brine Mining Zones
本研究以莱州湾羊口盐场为例,基于原位监测数据构建水文地质模型并确定边界条件,模拟分析了潮汐作用下地下卤水开采区水盐迁移模式及影响因素.结果表明,潮汐涨落主要影响陆-海界面潜水卤水盐度的变化幅度.潮汐涨落还使滨海区域的地下水高速渗流区分布范围在开采区-潮滩界面发生周期性的伸展、回退.由于开采区降水漏斗的存在,海洋侧水体始终向内陆输入.研究区内海洋侧盐分向陆地输送呈"双盐峰"模式.较大的潮差会使第一个盐峰提前1 h到达,同时降低盐度峰值0.2～0.3 g/L;卤水停采会引起开采区地下卤水向海排泄并丧失盐分,双盐峰补给模式失效;潮沟的存在是双盐峰中第一个盐度峰值出现的关键,其为潮滩表层蒸发盐及高盐度海水输入潜水卤水的快速通道.
This study mainly focuses on the laws governing the replenishment of coastal subsurface brine with marine-derived salts.Taking Yangkou Saltworks in Laizhou Bay as a case study,we integrat-ed field monitoring with numerical modeling.Fieldwork included electrical resistivity tomography(ERT)and groundwater multi-parameter measurements across tidal cycles.The established hydrogeo-logical model simulated water-salt migration under tidal influence.Results demonstrate a dual-peak sa-linity supply pattern.Larger tidal ranges advanced the first salinity peak by 1 h while reducing peak con-centration by 0.2～0.3 g/L.Cessation of brine mining triggered seawater intrusion and salinity loss.Tidal creek networks were identified as critical pathways for the first salinity peak formation.Key find-ings reveal that tidal dynamics control the phreatic brine salinity variation amplitude.The high-permea-bility tidal creek system enables rapid salt transport.Subsurface brine mining activities dominate the land-sea hydraulic gradient.This study provides theoretical support for optimizing brine resource man-agement in coastal zones.
张宇丰;肖啸腾;武斌;李明波
山东省第四地质矿产勘查院,山东 潍坊 261021||山东省地矿局海岸带地质环境保护重点实验室,山东 潍坊 261021||中国海洋大学环境科学与工程学院,山东 青岛 266100中国海洋大学环境科学与工程学院,山东 青岛 266100山东省第四地质矿产勘查院,山东 潍坊 261021||山东省地矿局海岸带地质环境保护重点实验室,山东 潍坊 261021山东省第四地质矿产勘查院,山东 潍坊 261021||山东省地矿局海岸带地质环境保护重点实验室,山东 潍坊 261021
建筑与水利
滨海地下卤水水盐迁移影响因素电阻率层析成像监测地下水数值模拟
coastal subsurface brine resourceswater and salt migrationinfluencing factorselectrical resistivity tomography monitoringgroundwater numerical simulation
《中国海洋大学学报（自然科学版）》 2026 (7)
92-106,15
山东省第四地质矿产勘查院2024年度科技创新项目(2024YG-006)山东省地质矿产勘查开发局2025年海洋地质勘查项目(HJ202509)资助 Supported by the 2024 Annual Science and Technology Innovation Project of the Fourth Institute of Geology and Mineral Exploration of Shandong Province(2024YG-006)the 2025 Marine Geological Survey Project of the Shandong Provincial Bureau of Geology and Mineral Exploration and Development(HJ202509)
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