Use of steady-state hydraulic tomography to inform the selection of a chaotic advection system
文献类型：期刊论文
| 作者 | Cho, Michelle S.3,4; Zhao, Zhanfeng1,2; Thomson, Neil R.3; Illman, Walter A.2 |
| 刊名 | JOURNAL OF CONTAMINANT HYDROLOGY
 |
| 出版日期 | 2020-02-01 |
| 卷号 | 229页码:14 |
| 关键词 | Chaotic advection Groundwater In situ remediation Hydraulic tomography Subsurface heterogeneity RPM flow |
| ISSN号 | 0169-7722 |
| DOI | 10.1016/j.jconhyd.2019.103559 |
| 通讯作者 | Cho, Michelle S.(mscho@uwaterloo.ca) |
| 英文摘要 | The concept of chaotic advection is a novel approach that has the potential to overcome some of the challenges associated with mixing of reagents that commonly occur when injection based in situ treatment techniques are used. The rotated potential mixing (RPM) flow system is one configuration which has been theorized to achieve chaotic advection in porous media, and enhance reagent mixing by periodically re-oriented dipole pumping at a series of radial wells. Prior to field implementation of chaotic advection, the selection of an RPM flow protocol will likely require a numerical model that can adequately represent groundwater flow within the zone of interest. As expected, the hydraulic conductivity (K) field is the most critical input requirement for the selected groundwater flow model. Hydraulic tomography (HT) is an innovative characterization approach that has shown potential to provide information on a K field. In this investigation, we explored whether the same well system required to invoke chaotic advection can also be applied in a HT analysis, and evaluated the use of the generated K tomogram for the selection of RPM flow parameters that can enhance reagent mixing. A series of dipole pumping tests were conducted within an area of interest as defined by the limits of the circular network of eight injection/extraction wells used to invoke chaotic advection. Hydraulic head data collected from independent dipole pumping tests were used in an inverse model to perform steady-state hydraulic tomography (SSHT) analysis to generate a K tomogram. Both the K tomogram and an effective parameter approach (i.e., a single K value assigned across the entire spatial domain as determined by single well pumping and slug tests) produced estimates of hydraulic head that closely resembled those observed due to the relative homogeneous nature of the aquifer and the small spatial scale of the area of interest. In contrast, particle tracking results showed that incorporating a heterogeneous K field significantly enhanced the spatial distribution of particle trajectories indicative of reagent mixing. These findings support the hypothesis that the same well system used to invoke chaotic advection can be combined with SSHT analysis as a viable site characterization tool for delineating the spatial variability of K. Incorporating this K tomogram in a groundwater flow model with a particle tracking engine can be used as a design tool to aid in the selection of a site-specific RPM flow protocol to achieve enhanced reagent mixing. |
| WOS关键词 | NATURAL GRADIENT EXPERIMENT ; SOLUTE TRANSPORT ; BORDEN AQUIFER ; SAND AQUIFER ; HETEROGENEITY ; CONDUCTIVITY ; PLUME ; DISSOLUTION ; DELIVERY |
| 资助项目 | Natural Sciences and Engineering Research Council (NSERC) of Canada Graduate Scholarship ; American Petroleum Institute (API) ; NSERC of Canada Collaborative Research and Development Grant ; NSERC |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000514228400002 |
| 出版者 | ELSEVIER |
| 资助机构 | Natural Sciences and Engineering Research Council (NSERC) of Canada Graduate Scholarship ; American Petroleum Institute (API) ; NSERC of Canada Collaborative Research and Development Grant ; NSERC |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/132663]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Cho, Michelle S. |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing, Peoples R China 2.Univ Waterloo, Dept Earth & Environm Sci, 200 Univ Ave West, Waterloo, ON N2L 3G1, Canada 3.Univ Waterloo, Dept Civil & Environm Engn, 200 Univ Ave West, Waterloo, ON N2L 3G1, Canada 4.Geosyntec Consultants Inc, Toronto, ON, Canada |
| 推荐引用方式 GB/T 7714 | Cho, Michelle S.,Zhao, Zhanfeng,Thomson, Neil R.,et al. Use of steady-state hydraulic tomography to inform the selection of a chaotic advection system[J]. JOURNAL OF CONTAMINANT HYDROLOGY,2020,229:14. |
| APA | Cho, Michelle S.,Zhao, Zhanfeng,Thomson, Neil R.,&Illman, Walter A..(2020).Use of steady-state hydraulic tomography to inform the selection of a chaotic advection system.JOURNAL OF CONTAMINANT HYDROLOGY,229,14. |
| MLA | Cho, Michelle S.,et al."Use of steady-state hydraulic tomography to inform the selection of a chaotic advection system".JOURNAL OF CONTAMINANT HYDROLOGY 229(2020):14. |
入库方式： OAI收割
来源：地理科学与资源研究所
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