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地震 ›› 2024, Vol. 44 ›› Issue (3): 21-37.doi: 10.12196/j.issn.1000-3274.2024.03.002

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张渤断裂带山东东部地热水地球化学特征分析

陈其峰1, 李营2, 张帆3, 孙宇飞3, 贾震1, 杜桂林4, 曹一1, 冯恩国1   

  1. 1.山东省地震局聊城地震监测中心站, 山东 聊城 252000;
    2.中国地震局地震预测研究所, 地震预测重点实验室, 北京 100036;
    3.张家口地震监测中心站, 河北 张家口 075000;
    4.威海市地震监测中心, 山东 威海 264200
  • 收稿日期:2024-04-15 接受日期:2024-06-12 出版日期:2024-07-31 发布日期:2024-08-28
  • 通讯作者: 李营, 研究员。 E-mail: Liying@ief.ac.cn
  • 作者简介:陈其峰(1974-), 男, 山东聊城人, 高级工程师, 主要从事地震地下流体监测和预测研究。
  • 基金资助:
    中国地震局地震监测预报专项(YBZX-DQHX-201807); 山东省地震局科研项目(YB2327)

The Geochemical Characteristics Analysis of Geothermal Water in Eastern Shandong Province of the Zhangbo Fault Zone

CHEN Qi-feng1, LI Ying2, ZHANG Fan3, SUN Yu-fei3, JIA Zhen1, DU Gui-lin4, CAO Yi1, FENG En-guo1   

  1. 1. Liaocheng Earthquake Monitoring Central Station of Shandong Earthquake Agency, Liaocheng 252000, China;
    2. Key Laboratory of Earthquake Prediction, Institute of Earthquake Forecasting, China Earthquake Administration, Beijing 100036, China;
    3. Zhangjiakou Earthquake Monitoring Center Station, Zhangjiakou 075000, China;
    4. Weihai Earthquake Monitoring Center, Weihai 264200, China
  • Received:2024-04-15 Accepted:2024-06-12 Online:2024-07-31 Published:2024-08-28

摘要: 通过对张渤断裂带山东东部地区温泉/地热井采样, 测试水样主量元素和氢氧同位素, 进行水文地球化学特征分析, 结果表明: ① 地热水化学类型主要有Ca-HCO3、 Na-Cl、 Na-HCO3、 Na-SO4。 ② δD、 δ18O的测值范围分别为-39.90‰~-68.00‰和-5.00‰~-8.50‰, 均落在中国大气降水线和中国东部地区大气降水线下方附近, 说明地热水来源为大气降水。 计算得到研究区地热水最小循环深度为1183 m, 最大循环深度为4271 m, 补给高程大致变化范围为430.0~1366.6 m。 ③ γNa/γCl变化范围在0.509~38.37, 其中临朐揽翠湖、 磁山温泉变质系数相对较高, 表明受矿物溶滤作用较大。 ④ Na-K-Mg三角图表明地热水样大多为部分平衡水, 仅有高青县御泉汤温泉为平衡水。

关键词: 张渤断裂带, 山东东部, 地热水, 地球化学特征, 氢氧同位素

Abstract: The hydrogeochemical characteristics are studied by sampling geothermal hot springs/geothermal wells in eastern Shandong of the Zhangbo fault zone,measuring the main elements and hydrogen and oxygen isotopes of water samples. The results show that: ① The main chemical types of hot spring water are Ca-HCO3, Na-Cl, Na-HCO3, Na-SO4. ② The measured values of δD and δ18O are -39.90%~-68. 00% and -5.00%~-8.50%,which fell near the meteoric water line in China and the meteoric water line in eastern China, indicating that the hot springs was meteoric water. According to the calculation, the minimum circulation depth in the study area of hot springs is 1183 m, the maximum circulation depth is 4271 m, and the general variation range of recharge elevation is 430.0~1366.6 m. ③ The variation range of γNa/γCl in Shandong region is 0.509~38.37,among which, the metamorphism coefficient of Linqulan Cuihu and Cishan hot spring are relatively high, that indicate that it is affected by mineral leaching. ④ The Na-K-Mg triangle diagram shows that most of the hot springs water samples are partially mature water, only the Yuquan hot spring in Gaoqing County being equilibrium water.

Key words: Zhangbo fault zone, Eastern Shandong, Geothermal water, Geochemical characteristics, Hydrogen and oxygen isotopes

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