| 贵州省水热型地热资源分布及流体水化学特征 |
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| 作者姓名： | 杨荣康 罗维 裴永炜 王乾 |
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| 作者单位： | 1.贵州省地质环境监测院,贵阳 550004; 2.贵州省环境地质研究所,贵阳 550004 |
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| 基金项目： | 中国地质调查局“贵州省地热资源现状调查评价与区划(水[2013]]01-029-006)”项目资助 |
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| 摘 要： | 为分析总结贵州省水热型地热资源分布特征和水化学特征,对省内天然温泉和地热井流体进行调查和采样测试,在全面收集已有最新地热勘查资料的基础上,通过地热资源地质勘查、评价相关标准和规范以及流体水化学Piper三线图分析等,划分地热资源类型,分析资源分布、资源富集和热储特征,研究不同构造区、不同热储中流体水文地球化学、微量元素等特征。结果表明: 贵州省水热型地热资源主要分布于黔中及黔北地区,属低温地热资源,类型以隆起(褶皱)断裂型为主,以层状兼带状热储分布最广; 地热流体富集和出露受构造控制明显,在石阡、遵义、贵阳、息烽等地形成以震旦系、寒武系白云岩热储为主的4大地热资源富集区,动态较稳定; 相同构造区和热储中流体水化学特征基本相似,水化学类型总体以重碳酸盐型为主,具有矿化度低、富含锶、偏硅酸、氟、氡等对人体有益的微量元素和放射性成分等特征。
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| 关 键 词： | 地热资源 水化学特征 贵州省 |
| 收稿时间： | 2017-12-25 |
Distribution and fluids hydrochemistry characteristics of hydrothermal geothermal resources in Guizhou Province |
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| Authors: | YANG Rongkang LUO Wei PEI Yongwei WANG Qian |
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| Institution: | 1. Guizhou Institute of Geo-Environmental Monitoring, Guiyang 550004, China; 2. Guizhou Institute of Environmental Geology, Guiyang 550004, China |
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| Abstract: | In order to analyze the distribution and fluids hydrochemistry characteristics of hydrothermal geothermal resources in Guizhou Province, the authors investigated and sampled fluids from hot springs and geothermal wells within the province. Based on the previous and newest geothermal resources exploration data,through geothermal resources exploration and evaluation standard and Piper Graph of fluids hydrochemistry, the authors divided geothermal resource types, and analyzed resource distribution, resource enrichment and geothermal reservoir characters. The characteristics of fluids hydrochemistry and trace elements in different tectonic zones and different geothermal reservoirs were also studied in this paper. The results show that the hydrothermal geothermal resources in Guizhou Province are mainly distributed in Central and Northern Guizhou, which belong to low temperature geothermal resources. And the main resource type is uplift (fold) fracture type and the most widely distributed geothermal reservoirs are layered reservoir and banding reservoir. The enrichment and outcrop of geothermal fluids are obviously controlled by the structure. The biggest four geothermal resource areas, mainly Sinian and Cambrian dolomite geothermal reservoirs in a stable dyuamic state, are Shiqian, Zunyi, Guiyang and Xifeng. The hydrochemistry characteristics of the fluids in same tectonic zones and geothermal reservoirs are basically same. The fluids belong to bicarbonate type in hudrochemistry and they have low mineralization, and high content of trace elements and radioactive elements, such as strontium, metasilicate, fluorine and radon. |
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| Keywords: | geothermal resources hydrochemistry characteristics Guizhou Province |
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