...
首页> 外文期刊>Ground water >Accounting for Aquifer Heterogeneity from Geological Data to Management Tools
【24h】

Accounting for Aquifer Heterogeneity from Geological Data to Management Tools

机译:从地质数据到管理工具的含水层非均质性核算

获取原文
获取原文并翻译 | 示例
           

摘要

A nested workflow of multiple-point geostatistics (MPG) and sequential Gaussian simulation (SGS) was tested on a study area of 6 km2 located about 20 km northwest of Quebec City, Canada. In order to assess its geological and hydrogeological parameter heterogeneity and to provide tools to evaluate uncertainties in aquifer management, direct and indirect field measurements are used as inputs in the geostatistical simulations to reproduce large and small-scale heterogeneities. To do so, the lithological information is first associated to equivalent hydrogeological facies (hydrofacies) according to hydraulic properties measured at several wells. Then, heterogeneous hydrofacies (HF) realizations are generated using a prior geological model as training image (TI) with the MPG algorithm. The hydraulic conductivity (K) heterogeneity modeling within each HF is finally computed using SGS algorithm. Different K models are integrated in a finite-element hydrogeological model to calculate multiple transport simulations. Different scenarios exhibit variations in mass transport path and dispersion associated with the large- and small-scale heterogeneity respectively. Three-dimensional maps showing the probability of overpassing different thresholds are presented as examples of management tools.
机译:多点地统计(MPG)和顺序高斯模拟(SGS)的嵌套工作流在加拿大魁北克市西北约20 km的6 km2研究区域上进行了测试。为了评估其地质和水文地质参数的非均质性,并提供评估含水层管理中不确定性的工具,直接和间接的现场测量被用作地统计学模拟中的输入,以再现大型和小型非均质性。为此,根据在几口井测得的水力特性,首先将岩性信息与等效的水文地质相(水相)相关联。然后,通过MPG算法使用先验地质模型作为训练图像(TI),生成非均质水相(HF)实现。最后,使用SGS算法计算每个HF中的水力传导率(K)异质性模型。将不同的K模型集成到有限元水文地质模型中,以计算多个运输模拟。不同的场景分别在大规模和小规模异质性上表现出质量传递路径和分散性的变化。三维地图显示了超过不同阈值的可能性,作为管理工具的示例。

著录项

  • 来源
    《Ground water》 |2013年第3期|421-431|共11页
  • 作者单位

    Departement des Sciences de la Terre, INRS-ETE, 490 rue de la Couronne, Quebec, Qc, Canada, G1K 9A9 (1)418 575 8047;

    Departement des Sciences de la Terre, INRS-ETE, 490 rue de la Couronne, Quebec, Qc, Canada, Gl K 9A9;

    Departement des Sciences de la Terre, INRS-ETE, 490 rue de la Couronne, Quebec, Qc, Canada, Gl K 9A9;

  • 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