地学前缘 ›› 2009, Vol. 16 ›› Issue (2): 384-395.

• 论文 • 上一篇    下一篇

北京奥林匹克公园—北苑家园地区地热水流体地球化学特征和形成时代分析

  

  1. 1有色金属矿产地质调查中心, 北京 100012
    2北京市地质调查研究院, 北京 102206
    3北京市地质勘察技术院, 北京 102218

  • 出版日期:2009-03-02 发布日期:2009-03-02
  • 作者简介:肖文进(1966—),男,高级工程师,主要从事地质勘查和综合研究工作。E-mail:xwenjin2004@163.com
  • 基金资助:

    北京市国土资源局和房屋管理局项目(京国土房管热 ［2002］ 871号)

 Analysis of geochemical characteristics and formation age of geothermal fluid deposited in Beiyuan Jiayuan to Beijing Olympic Park Area.

  1. 1Non-Ferrous Metal Mineral Resources Geology Survey Center, Beijing 100012, China
    2Geological Survey and Research Institute of Beijing, Beijing  102206, China
    3Geological Prospect Technology Institute of Beijing, Beijing  102218, China

  • Online:2009-03-02 Published:2009-03-02

PDF (PC)

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摘要：

北京奥林匹克公园地区是北京一个新的地热资源区。通过地热水流体地球化学、氢氧同位素、氚同位素和14C测年等数据,结合该地区地质和地热地质背景,对该区地热水的地球化学特征和形成机制进行了分析探讨。该区地下水水化学类型以碳酸、硫酸、盐酸钠型水(HCO-3SO2-4Cl-Na+)为主,亦有少量硝酸、重碳酸、钙镁型水(NO-3HCO-3Ca2+Mg2+)。地下热水不具有现代大气降水的补给特征,其径流状态与区域断裂系统有关,是介于地热源水和深层地下冷水之间的混合型地下热水,地热源水大约形成于20 000～30 000 a B.P.。该区地热水具有较高的开采利用潜力。

关键词: 地热水;地球化学特征;形成机制;北京

Abstract:

 Beijing Olympic Park Area is a newly discovered geothermal resource area in Beijing. Based on the geochemistry, HO isotopes, tritium isotopes and 14C dating data of the geothermal fluid and combining the geothermal geology background, we have studied the characteristics and the formation mechanism of the geothermal fluid in this area. The major hydrochemical type of the geothermal fluid is the type of HCO-3SO2-4Cl-Na+, and the minor one is HCO-3NO-3Ca2+Mg2+ type. The geothermal fluid was not supplied by the meteoric water and the runoff of the geothermal water is controlled by the regional fault system. The geothermal water is a mixed type of geothermal water between original geothermal water and deep cold underground water, and the original geothermal water was formed in 2000030000 a B.P. This area holds a big potential for geothermal water supply.

Key words:

geothermal water; geochemical characteristics; formation mechanism; Beijing

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