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    江汉平原典型含水层水文地质参数反演

    陈晨 文章 梁杏 李霞

    陈晨, 文章, 梁杏, 李霞, 2017. 江汉平原典型含水层水文地质参数反演. 地球科学, 42(5): 727-733. doi: 10.3799/dqkx.2017.060
    引用本文: 陈晨, 文章, 梁杏, 李霞, 2017. 江汉平原典型含水层水文地质参数反演. 地球科学, 42(5): 727-733. doi: 10.3799/dqkx.2017.060
    Chen Chen, Wen Zhang, Liang Xing, Li Xia, 2017. Estimation of Hydrogeological Parameters for Representative Aquifers in Jianghan Plain. Earth Science, 42(5): 727-733. doi: 10.3799/dqkx.2017.060
    Citation: Chen Chen, Wen Zhang, Liang Xing, Li Xia, 2017. Estimation of Hydrogeological Parameters for Representative Aquifers in Jianghan Plain. Earth Science, 42(5): 727-733. doi: 10.3799/dqkx.2017.060

    江汉平原典型含水层水文地质参数反演

    doi: 10.3799/dqkx.2017.060
    基金项目: 

    中国地质调查局项目 DD20160255

    国家自然科学基金项目 No.41372253

    中央高校基本科研业务费专项基金项目 No.CUG140503

    中国地质调查局项目 Nos.12120114069301

    详细信息
      作者简介:

      陈晨(1993-),男,硕士研究生,主要从事地下水数值模拟工作.ORCID:0000-0003-3701-1371.E-mail: frustratedchen@outlook.com

      通讯作者:

      文章,ORCID:0000-0001-9672-3219.E-mail:wenz@cug.edu.cn

    • 中图分类号: P641.6

    Estimation of Hydrogeological Parameters for Representative Aquifers in Jianghan Plain

    • 摘要: 含水层参数对于定性分析区域地下水资源评价、数值模拟及预报、开发利用与保护及科学管理具有重要意义,而江汉平原水文地质参数求解的研究却相对较少.2015年江汉平原1:50 000水文地质调查项目完成杨林尾图幅与陆溪口图幅,选择杨林尾图幅和陆溪口图幅中的4个代表性钻孔,分别做了3组抽水试验和一组压水试验.对抽水数据使用Dupuit公式法结合抽水稳定阶段数据求解含水层参数,同时利用Aquifer Test软件中Theis标准曲线法、直线图解法对抽水试验中非稳定条件下抽水数据对含水层参数求解,得到孔隙水含水层渗透系数及弹性给水度;利用压水试验工程规范求解基岩裂隙含水层的渗透系数.探讨了利用非稳定抽水试验条件下求解含水层参数方法的可行性及该方法的优势.计算结果表明:杨林尾镇浅层(20.2~64.55 m)含水层渗透系数为0.075 m/d,弹性给水度为5.8×10-2;深层(138~160 m)含水层渗透系数为9.89 m/d,弹性给水度为2.3×10-5;陆溪口镇浅层(19.4~36.4 m)含水层渗透系数1.26 m/d,弹性给水度为1.1×10-1;基岩渗透系数为0.012 m/d.通过结果对比分析发现对于单孔非稳定抽水试验,对前期水位降深数据筛选分析,同样可以利用非稳定井流理论反演含水层参数,结果比较可靠.

       

    • 图  1  江汉平原钻孔分布剖面

      Fig.  1.  Locations of the boreholes in Jianghan plain

      图  2  标准曲线法与直线图解法拟合结果

      a. YLW01号孔标准曲线拟合结果;b. YLW01直线图解法拟合结果;c.YLW02号孔标准曲线拟合结果;d.YLW02直线图解法拟合结果;e.LXK02号孔标准曲线拟合结果;f.LXK02直线图解法拟合结果

      Fig.  2.  Result of the type curve matching method and the straight line method

      图  3  压水试验P-Q曲线

      a.LXK01号孔40.38~45.38 m试段压水试验P-Q曲线关系;b.LXK01号孔35.38~40.38 m试段压水试验P-Q曲线

      Fig.  3.  The P-Q curve of packer test

      表  1  杨林尾、陆溪口水文钻孔信息

      Table  1.   The information of the boreholes in Yanglinwei and Luxikou Town

      钻孔编号 位置 孔径(cm) 孔深(m) 滤水管(m) 含水层岩性
      YLW01 复兴水厂 33 201.00 138.00~160.00 粗砂、中砂
      YLW02 南套村 16 81.00 20.20~64.55 细砂夹少量中砂
      LXK01 硚口村 16 50.38 30.38~50.38 第三系灰岩
      LXK02 石桥村 16 56.00 19.40~36.40 中砂夹细砂
      下载: 导出CSV

      表  2  抽水试验过程记录

      Table  2.   Details of the pumping tests

      孔号 开泵时间 停泵时间 初始流量(m3/d) 稳定流量(m3/d) 最大降深(m)
      YLW01 8:00 11:30 984.0 984.0 5.50
      YLW02 10:15 13:50 213.0 122.4 23.50
      LXK02 9:00 11:52 285.0 201.6 19.10
      下载: 导出CSV

      表  3  Dupuit公式法含水层参数反演结果

      Table  3.   Parameters calculated by Dupuit method

      孔号 孔径rw(cm) 流量Q(m3/d) 含水层厚度M(m) 降深sw(m) 影响半径R(m) 渗透系数K(m/d)
      YLW01 16.5 984.0 22.00 5.3 164.82 8.98
      YLW02 8.0 122.4 44.35 23.5 84.73 0.13
      LXK02 9.0 201.6 17.00 19.1 94.47 1.93
      下载: 导出CSV

      表  4  非稳定抽水试验数据拟合参数结果

      Table  4.   Estimated aquifer parameters with the transient pumping test data

      孔号 滤水管深(m) 标准曲线拟合结果 线性拟合结果 K平均值(m/d) S平均值
      渗透系数K(m/d) 弹性给水度S 渗透系数K(m/d) 弹性给水度S
      YLW01 138.00~160.00 9.90 4.55×10-5 11.72 2.40×10-6 10.810 2.3×10-5
      YLW02 20.20~64.55 0.03 3.83×10-2 0.02 7.77×10-2 0.025 5.8×10-2
      LXK02 19.40~36.40 0.48 1.09×10-3 0.15 1.08×10-1 0.580 1.1×10-1
      下载: 导出CSV

      表  5  岩层渗透系数计算值

      Table  5.   Results of rock permeability

      压力阶段(MPa) 流量(L/min) 试段长度(m) 渗透率(mD) 渗透系数K(m/d)
      0.3 2.37 5.0 0.0227 0.014
      0.6 3.85 5.0 0.0183 0.012
      1.0 6.36 5.0 0.0182 0.011
      下载: 导出CSV
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    • 收稿日期:  2016-12-22
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