• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ground water >Groundwater Flow Field Distortion by Monitoring Wells and Passive Flux Meters
【24h】

Groundwater Flow Field Distortion by Monitoring Wells and Passive Flux Meters

机译：通过监测井和被动通量计对地下水流场的扭曲

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Due to differences in hydraulic conductivity and effects of well construction geometry, groundwater lateral flow through a monitoring well typically differs from groundwater flow in the surrounding aquifer. These differences must be well understood in order to apply passive measuring techniques, such as passive flux meters (PFMs) used for the measurement of groundwater and contaminant mass fluxes. To understand these differences, lab flow tank experiments were performed to evaluate the influences of the well screen, the surrounding filter pack and the presence of a PFM on the natural groundwater flux through a monitoring well. The results were compared with analytical calculations of flow field distortion based on the potential theory of Drost et al. (1968). Measured well flow field distortion factors were found to be lower than calculated flow field distortion factors, while measured PFM flow field distortion factors were comparable to the calculated ones. However, this latter is not the case for all conditions. The slotted geometry of the well screen seems to make a correct analytical calculation challenging for conditions where flow field deviation occurs, because the potential theory assumes a uniform flow field. Finally, plots of the functional relationships of the distortion of the flow field with the hydraulic conductivities of the filter screen, surrounding filter pack and corresponding radii make it possible to design well construction to optimally function during PFM applications.
机译：由于水力传导率的差异以及井结构的影响，通过监控井的地下水侧向流量通常与周围含水层中的地下水流量不同。为了应用无源测量技术，例如用于测量地下水和污染物质量通量的无源通量计（PFM），必须很好地理解这些差异。为了理解这些差异，进行了实验室流量罐实验，以通过监测井评估井筛，周围滤袋和PFM对天然地下水通量的影响。将结果与基于Drost等人的潜在理论的流场畸变的解析计算进行了比较。 （1968）。发现测得的井流场畸变因子低于计算出的流场畸变因子，而测得的PFM流场畸变因子与计算值相当。但是，后一种情况并非在所有情况下都适用。井筛的开槽几何形状似乎对流场发生偏移的条件进行了正确的分析计算，因为势能理论假定流场是均匀的。最后，流场变形与滤网，周围滤网组件和相应半径的水力传导率之间的函数关系图可以设计井结构以在PFM应用中发挥最佳作用。

著录项

  • 来源
    《Ground water》 |2015年第6期|933-942|共10页
  • 作者

    Verreydt G.; Bronders J.; Van Keer I.; Diels L.; Vanderauwera P.;

  • 作者单位

    Flemish Inst Technol Res, B-2400 Mol, Belgium|Univ Antwerp, Dept Biol, B-2610 Antwerp, Belgium;

    Flemish Inst Technol Res, B-2400 Mol, Belgium;

    Flemish Inst Technol Res, B-2400 Mol, Belgium;

    Flemish Inst Technol Res, B-2400 Mol, Belgium|Univ Antwerp, Dept Biol, B-2610 Antwerp, Belgium;

    Univ Antwerp, Dept Ind Engn, B-2660 Hoboken, Belgium;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号