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南京市浅层地温场研究——基于分布式光纤测温技术

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李济琛, 陈明珠, 汤强, 刘春, 梁立唯, PeterBayer. 2021. 南京市浅层地温场研究——基于分布式光纤测温技术[J]. 中国地质, 48(3): 939-947. doi: 10.12029/gc20210320
引用本文: 李济琛, 陈明珠, 汤强, 刘春, 梁立唯, PeterBayer. 2021. 南京市浅层地温场研究——基于分布式光纤测温技术[J]. 中国地质, 48(3): 939-947. doi: 10.12029/gc20210320
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LI Jichen, CHEN Mingzhu, TANG Qiang, LIU Chun, LIANG Liwei, Peter Bayer. 2021. Study on shallow geothermal field in Nanjing: Based on distributed optical fiber temperature measurement system[J]. Geology in China, 48(3): 939-947. doi: 10.12029/gc20210320
Citation: LI Jichen, CHEN Mingzhu, TANG Qiang, LIU Chun, LIANG Liwei, Peter Bayer. 2021. Study on shallow geothermal field in Nanjing: Based on distributed optical fiber temperature measurement system[J]. Geology in China, 48(3): 939-947. doi: 10.12029/gc20210320
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南京市浅层地温场研究——基于分布式光纤测温技术

  • 1.

    南京大学 地球科学与工程学院, 江苏 南京 210023

  • 2.

    江苏省地质调查研究院, 江苏 南京 210018

  • 3.

    Institute of Geosciences and Geography, Martin-Luther University Halle-Wittenberg, Von Seckendorff-Plat 3, 06120 Halle (Saale), Germany

  • 基金项目:
    国家自然科学基金项目（41761134089，41977218）、江苏省自然科学基金青年项目（BK20170393）联合资助
详细信息
    作者简介: 李济琛, 男, 1996年生, 硕士生, 主要从事浅层地热能研究; E-mail: ljc_nju@smail.nju.edu.cn
    通讯作者: 刘春, 男, 1984年生, 副教授, 硕士生导师, 长期从事计算工程地质科研工作; E-mail: chunliu@nju.edu.cn

  • 中图分类号: P314;TK521

Study on shallow geothermal field in Nanjing: Based on distributed optical fiber temperature measurement system

  • 1.

    School of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, Jiangsu, China

  • 2.

    Geological Survey of Jiangsu Province, Nanjing 210018, Jiangsu, China

  • 3.

    Institute of Geosciences and Geography, Martin-Luther University Halle-Wittenberg, Von Seckendorff-Plat 3, 06120 Halle (Saale), Germany

  • Fund Project: Funded by National Natural Science Foundation of China(No.41761134089, No.41977218) and Jiangsu Natural Science Foundation Youth Project(No. BK20170393)
More Information
    Author Bio: LI Jichen, male, born in 1996, master candidate, engaged in the study of shallow geothermal; Email: ljc_nju@smail.nju.edu.cn .
    Corresponding author: LIU Chun, male, born in 1984, associate professor, majoring in computational engineering geology

    摘要

  • 浅层地热能作为新型能源受到了国际国内的广泛关注，常规的电阻式温度传感器受电磁干扰，不适合长期在野外复杂环境中使用。本文应用抗干扰能力强的分布式光纤测温技术，对南京市19个百米深钻孔进行地温测量，获得了2018年冬季与2019年春季南京市浅层地下温度分布。综合南京市水文和地质条件，得出结论：浅层地温的变化相对于气温的变化存在着滞后现象；对于同一地点的浅层地温，地下水的流动会使得地温在不同季节出现差异；构造条件显著影响着南京市浅层地温分布。本项研究结果为南京市浅层地热能的利用分区与进一步开发提供参考。

    Shallow geothermal energy has attracted extensive attention at home and abroad as a new type renewable energy. Resistance temperature sensors, as susceptible to electromagnetic interference, are not suitable for long-term use. The distribution-based fiber optic temperature measurement technology with strong anti-interference ability was used in 19 boreholes to a depth of 100 meters in Nanjing City. In the winter of 2018 and spring of 2019, the distribution of shallow uground temperature in Nanjing was obtained from the 19 boreholes. Based on the hydrological and geological conditions in Nanjing, it is concluded that the change of shallow ground temperature is lagged relative to the change of air temperature. For the shallow ground temperature in the same location, the flow of groundwater will lead to different ground temperature in different seasons. Structural conditions significantly affect the distribution of shallow ground temperature. The results can provide a reference for the utilization and further development of shallow geothermal energy in Nanjing.

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  • 图 1  研究区钻孔分布

    Figure 1. 

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    图 2  室内测试装置示意图（a）及铠装光纤实物图（b）

    Figure 2. 

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    图 3  室内测试及其降噪处理

    Figure 3. 

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    图 4  野外钻孔布线图

    Figure 4. 

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    图 5  钻孔sg43地温原始数据与处理后数据

    Figure 5. 

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    图 6  南京市地温曲线特征

    Figure 6. 

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    图 7  春、冬季节变化下的南京市地温曲线

    Figure 7. 

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    图 8  南京市30~100 m地温梯度

    Figure 8. 

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    图 9  sg39、sg44地温曲线与地层柱状图（2019年春测）

    Figure 9. 

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    图 10  2018年冬季与2019年春季地表 30 m以下温度差值（据温忠辉等，2009修改）

    Figure 10. 

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收稿日期:  2019-09-25
修回日期:  2020-01-05
刊出日期:  2021-06-25

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