| 赵鑫鑫,程立群,王陶然,任改娟,徐一鸣,郝文辉.冀东山区浅部地温场分布特征及控制因素[J].矿产勘查,2022,13(7):983-989 |
| 冀东山区浅部地温场分布特征及控制因素 |
| Distribution characteristics and controlling factors of shallow geothermal field in eastern Hebei mountainous area |
| 投稿时间：2021-06-03 |
| DOI：10.20008/j.kckc.202207012 |
| 中文关键词: 地温场 分布特征 控制因素 冀东山区 |
| 英文关键词: geothermal field distribution characteristics control factors eastern Hebei mountainous area |
| 基金项目:本文受河北省地矿局2019年度水工环海专项预算项目(454-0503-YBN-V0U2)资助。 |
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| 中文摘要: |
| 本文通过对冀东山区的19个地热井、98个机民井进行连续地温数据测量,结合区域地质、水文资料,总结了区内地温场分布特征,分析了其控制因素。研究表明,冀东山区恒温带深度为20 m,温度为12.5 ℃；浅部主要地层及岩性平均地温梯度值较低,仅为1.12 ℃/100 m；地温场属于地温场正常区,平面分布明显受区域构造和大断层控制,地热异常区主要分布于这些深大断裂附近的次级构造交汇部位；此外水文地质条件和地层岩性也对区内地温场的分布具有一定的影响,只有在局部水动力和构造因素相结合的情况下才会形成局部地热异常。这些成果的取得,为今后在山区开展地热资源勘查研究起到一定的指导作用。 |
| 英文摘要: |
| Based on the continuous geothermal measurement data of 19 geothermal wells and 98 mechanical and civilian wells in the mountainous area of eastern Hebei Province, the distribution characteristics of geothermal field in the area are summarized and the controlling factors are analyzed based on the regional geological and hydrological data. The results show that the depth of the thermostatic zone is 20 m and the temperature is 12.5 ℃ in the mountainous area of eastern Hebei. The average geothermal gradient of the main strata and lithology in the shallow area is low, only 1.12 ℃/100 m. Geothermal field belongs to the normal area of geothermal field, and its plane distribution is obviously controlled by regional structure and large fault. Geothermal anomaly area is mainly distributed in the intersection of secondary structures not too far from these deep and large faults. In addition, hydrogeological conditions and stratigraphic lithology also have a certain influence on the distribution of geothermal field in the area. Local geothermal anomaly can only be formed when local hydrodynamic and structural factors are combined. These achievements will play a guiding role in the exploration and research of geothermal resources in mountainous areas in the future. |
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