习龙, 陈科衡, 黄向青, 甘华阳, 夏真, 谭晓煜. 海南南部沿海地下水水文地球化学及成因[J]. 地质通报, 2021, 40(2-3): 350-363.
    引用本文: 习龙, 陈科衡, 黄向青, 甘华阳, 夏真, 谭晓煜. 海南南部沿海地下水水文地球化学及成因[J]. 地质通报, 2021, 40(2-3): 350-363.
    XI Long, CHEN Keheng, HUANG Xiangqing, GAN Huayang, XIA Zhen, TAN Xiaoyu. Hydrogeochemistry and origin of groundwater in the south coast of Hainan[J]. Geological Bulletin of China, 2021, 40(2-3): 350-363.
    Citation: XI Long, CHEN Keheng, HUANG Xiangqing, GAN Huayang, XIA Zhen, TAN Xiaoyu. Hydrogeochemistry and origin of groundwater in the south coast of Hainan[J]. Geological Bulletin of China, 2021, 40(2-3): 350-363.

    海南南部沿海地下水水文地球化学及成因

    Hydrogeochemistry and origin of groundwater in the south coast of Hainan

    • 摘要: 海岸带地下水的水文地球化学特征及其成因研究对海岸带地区地下水合理利用、保护和污染防治等具有重大意义。利用Piper图、矿物相平衡分析、离子比例系数和Gibbs分析,揭示了海南南部沿海黎安港Z1、三亚湾Z2和板桥Z3监测井在大、小潮时段地下水的水文地球化学过程、水岩交互作用、成矿趋势和地下水的成因。结果表明,Z1、Z2和Z3的地下水分别为盐水、淡水和极度咸水。水化学类型分别为Cl-Na型、HCO3·Cl-Na·Ca型和Cl-Na型。硬石膏、石膏和岩盐溶解是该区地下水中的主要离子来源。Z1和Z3的地下水来源与受蒸发浓缩控制型的高矿化度的海水紧密相关,Z2的水化学环境主要受含钠硅酸盐矿物的岩石风化溶解作用影响。研究结果为进一步开展海岸带地下水环境监测和污染防治提供基础资料。

       

      Abstract: The study of hydrogeochemical characteristics and genesis of groundwater is of great significance for rational utilization, protection and pollution control of coastal groundwater.Piper map, mineral phase equilibrium analysis, ion proportion coefficient and Gibbs analysis were applied to reveal the hydrogeochemical process, water-rock interaction, mineralization trend and origin of groundwater during spring tide and neap tide through the monitoring of Wells Z1 in Li'an Port, Z2 in Sanya Bay and Z3 in Banqiao in the south coast of Hainan.The results indicate that groundwater in Z1, Z2 and Z3 are saline water, fresh water and extremely salty water respectively, their hydrochemical types belong to Cl-Na, HCO3·Cl-Na·Ca and Cl-Na respectively, and ions in the groundwater result from the dissolution of anhydrite, gypsum and halite.It is suggested that the groundwater sources of Z1 and Z3 are closely related to high-salinity seawater controlled by evaporation and concentration, while the hydrochemical environment of Z2 is mainly affected by weathering and dissolution of rocks with sodium silicate minerals.The above research results can provide basic data for the further monitoring of coastal groundwater environment and pollution control.

       

    /

    返回文章
    返回