The underground brine resources in the northern coastal area of Weifang City are widely distributed, and brine is rich in important minerals such as bromine and iodine. With the increasing scale of brine mining in recent years, it has a negative impact on the groundwater environment and leads to a shortage of brine resources. Therefore, clarifying the current occurrence status of brine resources can provide an indicator for mining. This article conducted a survey on the distribution of brine resources in the coastal brine mining area in the northern part of Weifang City in 2022. The survey covers the areas of Wopu (2.0 km northeast) - Yangzhuang (1.5 km north) - Daokou - Chahe (1.0 km northeast) - along the route of Provincial Highway 320 - Qingxiang - Xiaying (1.5 km south) - north of the Jiaolai River Bridge. The survey results of brine show that the concentration of brine (TDS) is distributed vertically, ranging from 10° Be′ to 16.5° Be′. Due to the influence of atmospheric precipitation and top support, the TDS exhibits a low high low distribution pattern from shallow to deep; In the horizontal direction, the concentration range of brine is between 5° Be ′ and 19.4° Be′. Due to the combined action of seawater and inland freshwater, the salinity of brine from coastal areas to inland areas shows a trend of low high low. There are 3-6 layers of confined brine layers in the entire region, with the first, second, and third confined brine layers being the main brine layers in the region. The TDS of the main brine resources is greater than or equal to 70 g/L. By investigating the distribution of brine concentration in the northern coastal areas of Weifang City, important reference basis can be provided for the utilization of water resources and environmental protection in the region.

Yuping Luo, Xiujun Guo, Yufeng Zhang. Investigation and analysis of spatial distribution of brine concentration in the underground brine mining area of the northern coastal area of Weifang City. Academic Journal of Environment & Earth Science (2024), Vol. 6, Issue 3: 34-41. https://doi.org/10.25236/AJEE.2024.060305.

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