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地面核磁共振测深方法在武汉市岩溶地面塌陷探测中的应用研究

刘道涵 张欣 何军 邬健强 刘磊

刘道涵,张 欣,何 军,等. 地面核磁共振测深方法在武汉市岩溶地面塌陷探测中的应用研究[J].中国岩溶,2022,41(1):13-20. doi: 10.11932/karst20220101
引用本文: 刘道涵,张 欣,何 军,等. 地面核磁共振测深方法在武汉市岩溶地面塌陷探测中的应用研究[J].中国岩溶,2022,41(1):13-20. doi: 10.11932/karst20220101
LIU Daohan,ZHANG Xin,HE Jun,et al.Study on the application of surface nuclear magnetic resonance in the detection of karst collapse in Wuhan[J].Carsologica Sinica,2022,41(01):13-20. doi: 10.11932/karst20220101
Citation: LIU Daohan,ZHANG Xin,HE Jun,et al.Study on the application of surface nuclear magnetic resonance in the detection of karst collapse in Wuhan[J].Carsologica Sinica,2022,41(01):13-20. doi: 10.11932/karst20220101

地面核磁共振测深方法在武汉市岩溶地面塌陷探测中的应用研究

doi: 10.11932/karst20220101
基金项目: 

国家自然科学基金 42107485

国家重点研发计划 2020YFC1512460, 2018YFC800804

中国地质调查局项目 DD20190282, DD20221734

详细信息
    作者简介:

    刘道涵(1987-),男,高级工程师,主要从事应用地球物理勘查与研究。E-mail:ldhwcgs@163.com

    通讯作者:

    刘磊(1981-),男,高级工程师,主要从事应用地球物理勘探。E-mail:4032780@qq.com

  • 中图分类号: P631

Study on the application of surface nuclear magnetic resonance in the detection of karst collapse in Wuhan

Funds: 

 42107485

 2020YFC1512460, 2018YFC800804

 DD20190282, DD20221734

  • 摘要: 岩溶地面塌陷是隐伏岩溶区常见的地质灾害类型之一,是制约武汉市城市规划和建设的重大地质环境问题。地下水对岩溶地面塌陷的形成和发展发挥着至关重要的作用,地面核磁共振测深方法是目前唯一直接探测地下水的地球物理方法,对地下水探测具有独特优势。本文介绍了地面核磁共振测深方法在探测岩溶塌陷区地下含水层方面的潜力,并在武汉市岩溶塌陷区内外开展了探测实验,结果表明:地面核磁共振测深反演的含水量参数可辅助划定含水层顶底板埋深,确定含水层厚度,并量化含水层富水性特征;弛豫时间参数指示了含水层孔隙度大小,可为岩溶发育程度、岩溶裂隙充填情况等提供参考。结合钻孔资料,验证了地面核磁共振测深方法在岩溶塌陷区地下含水层探测中的可行性。

     

  • 图  1  武汉市构造岩性分布简图

    Figure  1.  Geological structural diagram of Wuhan

    图  2  工作区示意图

    Figure  2.  Schematic diagram of the working area

    图  3  塌陷区内外地面核磁共振测深信号对比(A.塌陷区外SNMR_1,B.塌陷区内SNMR_2)

    Figure  3.  Comparison of signals from SNMR (A. SNMR_1, B. SNMR_2)

    图  4  塌陷区内SNMR_2探测与钻孔成果图

    Figure  4.  Results of SNMR_2 detection and drilling inside the collapse area

    图  5  塌陷区内外地面核磁共振测深探测结果对比图

    Figure  5.  Comparison of the results from SNMR (A. SNMR_1, B. SNMR_2)

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  • 收稿日期:  2020-04-20
  • 刊出日期:  2022-02-25

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