2020年3月
Modeling of the groundwater flow system in excavated areas of an abandoned mine
Journal of Contaminant Hydrology
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- 巻
- 230
- 号
- 開始ページ
- 103617
- 終了ページ
- 103617
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1016/j.jconhyd.2020.103617
- 出版者・発行元
- ELSEVIER
This study evaluated the assumption that back-filled excavated areas of old mine workings can be modeled as porous media, where groundwater flow is governed by Darcy's law. The Yatani mine, located in Yamagata Prefecture, Japan, was selected for this study because several mining methods were used during its operation and detailed drawings of the excavated areas of the mine are available. The model was calibrated using combinations of hydraulic conductivities (k), with the best-matched case being selected by comparing calculated and measured AMD fluxes. Modeled AMD fluxes along the drainage tunnel (−2 L level) were consistent with measured data when the excavated areas were considered to be porous media with a specific hydraulic conductivity, and the presence of faults and permeability were taken into account. The model also successfully predicted the increasing trend of AMD flux from the shaft to adit mouth. In the numerical model, the back-filled excavated areas were assumed to behave as porous media, which was shown to be a valid assumption in this mine. The model demonstrated that back-filling the excavated areas and drainage tunnel with low permeability materials could reduce the flux of Zn in AMD by up to 61%.
- リンク情報
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- DOI
- https://doi.org/10.1016/j.jconhyd.2020.103617
- PubMed
- https://www.ncbi.nlm.nih.gov/pubmed/32005454
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000528038100003&DestApp=WOS_CPL
- Scopus
- https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85078405049&origin=inward
- Scopus Citedby
- https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85078405049&origin=inward
- ID情報
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- DOI : 10.1016/j.jconhyd.2020.103617
- ISSN : 0169-7722
- eISSN : 1873-6009
- PubMed ID : 32005454
- SCOPUS ID : 85078405049
- Web of Science ID : WOS:000528038100003