Cargando…

Numerical simulation and protection of the dynamic change of Jinan karst spring based on coupling of seepage and conduit flow

The objective of this study was to predict the dynamic change in the spring water level more precisely, to provide timely solutions for karst spring protection. Using the Jinan spring region as a case study, this study established a numerical model of a karst groundwater system, and optimized the mi...

Descripción completa

Detalles Bibliográficos
Autores principales: Li, Changsuo, Xing, Liting, Dong, Yanan, Peng, Yuming, Xing, Xuerui, Li, Chuanlei, Zhao, Zhenhua
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9437806/
https://www.ncbi.nlm.nih.gov/pubmed/36060469
http://dx.doi.org/10.1016/j.heliyon.2022.e10428
_version_ 1784781697453129728
author Li, Changsuo
Xing, Liting
Dong, Yanan
Peng, Yuming
Xing, Xuerui
Li, Chuanlei
Zhao, Zhenhua
author_facet Li, Changsuo
Xing, Liting
Dong, Yanan
Peng, Yuming
Xing, Xuerui
Li, Chuanlei
Zhao, Zhenhua
author_sort Li, Changsuo
collection PubMed
description The objective of this study was to predict the dynamic change in the spring water level more precisely, to provide timely solutions for karst spring protection. Using the Jinan spring region as a case study, this study established a numerical model of a karst groundwater system, and optimized the mining layout. The calculated maximum extraction volume following the optimized exploitation layout was 0.69 m(3)/s, in order to ensure the continuous flow of spring water in the median water year. A coupled karst groundwater numerical model with dual structure was developed using the MODFLOW-Conduit Flow Process (CFP), which simulates and then precisely predicts changes in the water level of the karst springs. Here, the plane extension direction of the karst conduit was determined by a tracer test and correlation analysis of the spring water levels and groundwater levels of the observation wells. Meanwhile, the vertical location of the karst conduit was determined by layered monitoring of the groundwater temperature and conductivity. Based on this, a coupling model of seepage and conduit flow was created to simulate the dynamic change in the spring water level, and the dual-media coupling model improved the simulation accuracy of the spring water level. The current study confirmed that, compared to the porous media seepage model, the dual-media coupling model can simulate the groundwater level dynamic change more accurately in a heterogeneous karst aquifer in northern China. The coupling model was used to analyze the effect of supplementation and optimize mining, to ensure that spring water continues to flow during the dry season while supplying the mining demand.
format Online
Article
Text
id pubmed-9437806
institution National Center for Biotechnology Information
language English
publishDate 2022
publisher Elsevier
record_format MEDLINE/PubMed
spelling pubmed-94378062022-09-03 Numerical simulation and protection of the dynamic change of Jinan karst spring based on coupling of seepage and conduit flow Li, Changsuo Xing, Liting Dong, Yanan Peng, Yuming Xing, Xuerui Li, Chuanlei Zhao, Zhenhua Heliyon Research Article The objective of this study was to predict the dynamic change in the spring water level more precisely, to provide timely solutions for karst spring protection. Using the Jinan spring region as a case study, this study established a numerical model of a karst groundwater system, and optimized the mining layout. The calculated maximum extraction volume following the optimized exploitation layout was 0.69 m(3)/s, in order to ensure the continuous flow of spring water in the median water year. A coupled karst groundwater numerical model with dual structure was developed using the MODFLOW-Conduit Flow Process (CFP), which simulates and then precisely predicts changes in the water level of the karst springs. Here, the plane extension direction of the karst conduit was determined by a tracer test and correlation analysis of the spring water levels and groundwater levels of the observation wells. Meanwhile, the vertical location of the karst conduit was determined by layered monitoring of the groundwater temperature and conductivity. Based on this, a coupling model of seepage and conduit flow was created to simulate the dynamic change in the spring water level, and the dual-media coupling model improved the simulation accuracy of the spring water level. The current study confirmed that, compared to the porous media seepage model, the dual-media coupling model can simulate the groundwater level dynamic change more accurately in a heterogeneous karst aquifer in northern China. The coupling model was used to analyze the effect of supplementation and optimize mining, to ensure that spring water continues to flow during the dry season while supplying the mining demand. Elsevier 2022-08-28 /pmc/articles/PMC9437806/ /pubmed/36060469 http://dx.doi.org/10.1016/j.heliyon.2022.e10428 Text en © 2022 The Author(s) https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Research Article
Li, Changsuo
Xing, Liting
Dong, Yanan
Peng, Yuming
Xing, Xuerui
Li, Chuanlei
Zhao, Zhenhua
Numerical simulation and protection of the dynamic change of Jinan karst spring based on coupling of seepage and conduit flow
title Numerical simulation and protection of the dynamic change of Jinan karst spring based on coupling of seepage and conduit flow
title_full Numerical simulation and protection of the dynamic change of Jinan karst spring based on coupling of seepage and conduit flow
title_fullStr Numerical simulation and protection of the dynamic change of Jinan karst spring based on coupling of seepage and conduit flow
title_full_unstemmed Numerical simulation and protection of the dynamic change of Jinan karst spring based on coupling of seepage and conduit flow
title_short Numerical simulation and protection of the dynamic change of Jinan karst spring based on coupling of seepage and conduit flow
title_sort numerical simulation and protection of the dynamic change of jinan karst spring based on coupling of seepage and conduit flow
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9437806/
https://www.ncbi.nlm.nih.gov/pubmed/36060469
http://dx.doi.org/10.1016/j.heliyon.2022.e10428
work_keys_str_mv AT lichangsuo numericalsimulationandprotectionofthedynamicchangeofjinankarstspringbasedoncouplingofseepageandconduitflow
AT xingliting numericalsimulationandprotectionofthedynamicchangeofjinankarstspringbasedoncouplingofseepageandconduitflow
AT dongyanan numericalsimulationandprotectionofthedynamicchangeofjinankarstspringbasedoncouplingofseepageandconduitflow
AT pengyuming numericalsimulationandprotectionofthedynamicchangeofjinankarstspringbasedoncouplingofseepageandconduitflow
AT xingxuerui numericalsimulationandprotectionofthedynamicchangeofjinankarstspringbasedoncouplingofseepageandconduitflow
AT lichuanlei numericalsimulationandprotectionofthedynamicchangeofjinankarstspringbasedoncouplingofseepageandconduitflow
AT zhaozhenhua numericalsimulationandprotectionofthedynamicchangeofjinankarstspringbasedoncouplingofseepageandconduitflow