| 涿鹿盆地三维多裂隙地质模型地温场数值模拟 |
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| 引用本文： | 陈金龙,罗文行,窦斌,周洋,宁文涛.涿鹿盆地三维多裂隙地质模型地温场数值模拟[J].地质科技通报,2021,40(3):22-33. |
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| 作者姓名： | 陈金龙 罗文行 窦斌 周洋 宁文涛 |
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| 基金项目： | 企业自主研发项目CX2017Z29国家重点研发计划项目2019YFB1504203国家重点研发计划项目2019YFB1504204国家重点研发计划项目2019YFB1504201 |
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| 摘 要： | 地温场预测是地热资源储量评价的重要前提，深部裂隙岩体渗流-传热耦合温度场研究正受到越来越多的关注。涿鹿盆地是新生代地堑式断陷盆地，地表温泉出露点多，地热资源丰富。依据实际地质调查结果和3条地球物理勘探测线解译的地质构造剖面，建立了矿场尺度的涿鹿盆地三维不平行多裂隙地质模型和地热成因模型，赋值调整参数，得到考虑地下水流动情况下多裂隙岩体渗流-传热数学模型，模型的合理性得到验证后，模拟计算了盆地内部温度场，指出盆地地热异常区集中在盆地中心蓟县系（70℃左右）和盆地北东长城系部位（90~98℃），最后研究分析了水力梯度的变化对盆地内部温度场的影响规律。研究结果为涿鹿盆地或同类型地区地热资源勘探、评价和开发利用提供一定的依据。
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| 关 键 词： | 地温场 地热资源 多裂隙岩体 渗流 传热 数值模拟 |
| 收稿时间： | 2020-09-24 |
Numerical simulation of geothermal field in a three-dimensional multi-fractured geological model of Zhuolu Basin |
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| Abstract: | The prediction of the geothermal field is an important prerequisite for the evaluation of geothermal resources. Much attention has been paid to the research on coupled temperature field of percolation-heat transfer in deep fractured rock mass. The Zhuolu Basin is a graben-type faulted basin of the Cenozoic era. There are many hot springs on the surface and rich geothermal resources. In this paper, a three-dimensional non-parallel multi-fractured geological model of the Zhuolu Basin for large scale was established based on the actual geological survey results and the geological structure section interpreted by 3 geophysical survey lines. Parameters have been assigned or adjusted, a mathematical model of permeate-heat transfer in multi-fractured rock mass considering groundwater flow was obtained. After the model was verified, the internal temperature field of the basin was calculated and indicated. The geothermal anomaly area is concentrated in the center of the Jixian group (around 70℃) and the north- eastern part of the Changcheng group (90~98℃), the internal temperature field of basin have been analyzed at different hydraulic reaolients. The study results provide a certain basis for the exploration, evaluation, development and utilization of geothermal resources in Zhuolu Basin or similar areas. |
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