| 李子永,赵静,张利峰,赵性稳,孔令号.基于高密度电法的莱州湾东岸地下咸淡水体时空分布特征分析[J].矿产勘查,2026,17(4):682-690 |
| 基于高密度电法的莱州湾东岸地下咸淡水体时空分布特征分析 |
| Spatial and temporal distribution characteristics of underground brackish water on the east coast of Laizhou Bay based on high-density electrical method |
| 投稿时间：2024-07-31 |
| DOI：10.20008/j.kckc.202604010 |
| 中文关键词: 高密度电法 海岸带地区 咸淡水体 时空分布 海水入侵界线 |
| 英文关键词: high density resistivity method coastal zone freshwater-saltwater body time-space distribution seawater intrusion limit |
| 基金项目:本文受中国地质调查局项目(DD20220886)资助。 |
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| 中文摘要: |
| 随着莱州湾沿岸地区经济社会的高速发展以及该地区地下水海水入侵问题日益严重，淡水资源紧缺已成为制约该地区工农业发展的重要因素。为查清莱州湾东岸地区的地下咸淡水体时空分布特征，寻找淡水资源缓解用水压力，应用高密度电法分季节时间开展调查研究工作。本研究初步查明了莱州湾东岸地区地层的电性特征、地下咸淡水体的空间分布特征，该地区的主要含水层为视电阻率 20~55 Ω·m的碎石层，地下水海水入侵较为严重，查清了海水入侵界线并划分了咸淡水体分界面，地下水时空分布受季节性降水影响明显，大气降水可有效缓解海水入侵。本文成果可为研究莱州湾东岸地下咸淡水体空间、时间分布特征提供可靠的地球物理资料，不同时期的高密度电法监测对比结果可为研究海水入侵的变化趋势提供地球物理依据。 |
| 英文摘要: |
| With the rapid economic and social development of Laizhou Bay coastal area and the increasinglyserious problem of groundwater and seawater intrusion, the shortage of fresh water resources has become an impor.tant factor restricting the development of industry and agriculture in this area. In order to find out the spatial andtemporal distribution characteristics of underground brackish water in the east bank of Laizhou Bay, and to findfresh water resources to relieve water pressure, high-density electrical method was used to carry out seasonal inves.tigation. In this study, the electrical characteristics of the strata and the spatial and temporal distribution character.istics of the underground brackish water body in the east bank of Laizhou Bay were initially identified. The mainaquifer in this area is the macadam layer with an apparent resistivity of 20~55 Ω·m, and the intrusion of seawaterfrom groundwater is relatively serious. The boundary of seawater intrusion was identified and the boundary of brack.ish water body was divided. The temporal and spatial distribution of groundwater is obviously affected by seasonalprecipitation, and atmospheric precipitation can effectively alleviate seawater intrusion. The results of this surveycan provide basic geophysical data for the study of spatial and temporal distribution characteristics of undergroundbrackish water in the east coast of Laizhou Bay, and the comparison of high-density electrical monitoring results indifferent periods can provide a basis for the study of the change trend of seawater intrusion. |
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