| 邱辉.粤东北贝岭地热田地热地质特征及水化学分析[J].地质与勘探,2022,58(1):158-167 |
| 粤东北贝岭地热田地热地质特征及水化学分析 |
| Characteristics of geothermal geology and hydrochemistry of the Beiling geothermal field in northeastern Guangdong Province |
| 投稿时间：2020-07-13 修订日期：2021-06-13 |
| DOI：10.12134/j.dzykt.2022.01.015 |
| 中文关键词: 地热地质特征 水化学 热储温度 贝岭地热田 粤东北 |
| 英文关键词: geothermal geological characteristics, hydrochemistry, Beiling geothermal field, Northeast Guandong |
| 基金项目:广东省地质勘查和城市地质专项基金广东省地热资源勘查项目（项目编号：2020-12）资助 |
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| 中文摘要: |
| 粤东北地区拥有丰富的低温水热型地热资源。贝岭地热田位于河源深断裂北东端，具有优越的地热地质条件，地热田内施工的钻孔（ZK1~ZK5）均揭露到了热矿水，水温48.2~77.0℃。为了深入研究地热田内的水化学特征，通过运用系统的水文地球化学分析方法，得出研究区热矿水水化学类型为低矿化的HCO3-Na型，SiO2含量较高，可用作理疗矿泉水。研究区地下热矿水处于水岩作用的初级阶段，热矿水中的石英和玉髓溶解度已达平衡状态。使用石英温标进行热储估算，结果表明T石英=116.0~150.1℃，平均地温梯度G=12.01℃/100 m，热储循环深度H=819.33~1103.26 m。本研究为今后该区的深部找热工作提供了一定的技术支撑。 |
| 英文摘要: |
| Northeastern Guangdong is endowed with abundant low-temperature hydrothermal type geothermal resources. In this region, the Beiling geothermal field is located at the northeastern end of the Heyuan deep fault with superior geothermal geological conditions. The boreholes (ZK1~ZK5) drilled in the field have all revealed hot mineral water with temperature of 48.2~77.0℃. A systematic water chemistry analysis shows that the thermal mineral water in the study area is of the low-mineralized HCO3-Na type with high SiO2 content, which can be used as physiotherapeutic mineral water. The subsurface thermal mineral water is in the primary stage of water-rock interaction and the solubility of quartz and chalcedony in the thermal mineral water has reached equilibrium. The results of thermal storage estimation using quartz temperature scale indicate Tquartz= 16.0~150.1℃, the average ground temperature gradient G = 12.01℃/100m, and the thermal storage circulation depth H = 819.33~1103.26 m. These data provide a technical support for the development of geothermal resources in the study area in the future. |
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