Study on the Hydrochemical Characteristics and Its Changes in the Deep Groundwater of Jiaojia Fault Belt
Received date: 2017-08-28
Revised date: 2017-12-26
Online published: 2018-05-19
Jiaojia fault belt is located in the southern section of the Longkou-Laizhou,which is one of the three most famous metallogenic belts in the northwest region of Jiaodong,and distributed many large-medium type goldmine,such as Xincheng gold deposit,Jiaojia gold deposit,Sizhuang gold deposit and Matang gold deposit.In order to study the hydrochemical characteristics and its changes in the deep groundwater of Jiaojia fault belt,13 groundwater samples from different mining area of pumping test were selected,the anion-cation of water samples were analyzed,and the water chemistry trend in the strike and dip of Jiaojia fault belt were analyzed.The results show that the chemical types of deep groundwater in Jiaojia fault belt are mainly Cl-Na and Cl•HCO3-Ca•Na type.Total dissoloved solid(TDS) is between 0.77~9.66 g/L,most of which are brackish water and salt water,and a small amount of fresh water.The strong acid of the deep groundwater in the Jiaojia fault belt is greater than the weak acid.There is a significant linear positive correlation between TDS and Cl-,and have a positive correlation between TDS and Na+,Mg2+.The correlation between TDS and HCO3-,SO42- and Ca2+ is not obvious.The comparative analysis shows that along the strike of Jiaojia fault belt,from south to north,Cl- and Ca2+ are basically rising.Along the dip of Jiaojia fault belt,from east to west,from shallow to deep,Cl- and TDS are rising,and the lower aquifer of Cl- with depth has been changing faster than the upper aquifer.The research results can provide guidance for the rational development and utilization of deep groundwater in this area.
LIU Shipeng , YIN Chuanyin , HU Ting , QIU Tian . Study on the Hydrochemical Characteristics and Its Changes in the Deep Groundwater of Jiaojia Fault Belt[J]. Gold Science and Technology, 2018 , 26(2) : 153 -159 . DOI: 10.11872/j.issn.1005-2518.2018.02.153
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