An integrated modelling approach for assessing the effect of multiscale complexity on groundwater source yields

JOURNAL OF HYDROLOGY

卷:588

Article

Upton, K. A.¹  Jackson, C. R.²  Butler, A. P.³  Jones, M. A.⁴ 

[1] British Geol Survey, Lyell Ctr, Res Ave South, Edinburgh EH14 4AP, Midlothian, Scotland

[2] British Geol Survey, Environm Sci Ctr, Nottingham NG12 5GG, Notts, England

[3] Imperial Coll London, Dept Civil & Environm Engn, London SW7 2AZ, England

[4] Thames Water Util Ltd, Clearwater Court, Vastern Rd, Reading RG1 8DB, Berks, England

关键词: Water resources;    Groundwater;    Sustainable yield;    Multiscale modelling;    OpenMI;   

DOI  :  10.1016/j.jhydrol.2020.125113

来源: Elsevier

【 摘 要 】

A new multi-scale groundwater modelling methodology is presented to simulate pumped water levels in abstraction boreholes within regional groundwater models, providing a robust tool for assessing the sustainable yield of supply boreholes and improving our understanding of groundwater availability during drought. A 3D borehole-scale model, which solves the Darcy-Forchheimer equation in cylindrical co-ordinates to simulate both linear and non-linear radial flow to a borehole in a heterogeneous aquifer, is embedded within a Cartesian grid, using a hybrid radial-Cartesian finite difference method. The local-scale model is coupled to a regional groundwater model, ZOOMQ3D, using the OpenMI model linkage software, providing a flexible and efficient tool for assessing the behaviour of a groundwater source within its regional hydrogeological context during historic droughts and under climate change. The advantages of the new method are demonstrated through application to a Chalk supply borehole in the UK.

【 授权许可】

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