Application of numerical modeling to reservoir immersion assessment and control in dual-formation hydrogeological unit

Reservoir immersion is a serious environmental geological issue in a dual-formation structural reservoir bank (DFB) induced by dynamic surface water impoundment (SWI) that has implications for low-lying farmland and buried infrastructure. It is a major challenge to identify the dynamic immersion pro...

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Autores principales: Yun Yang, Wengui Nan, Shenggen Guo, Dan Jin, Jianhui Wu, Yu Zhang, Zhi Dou, Zhifang Zhou
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Publicado: IWA Publishing 2021
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spelling oai:doaj.org-article:8240d641a0c14c5aa24cd891fa9634962021-11-06T07:19:16ZApplication of numerical modeling to reservoir immersion assessment and control in dual-formation hydrogeological unit1606-97491607-079810.2166/ws.2021.050https://doaj.org/article/8240d641a0c14c5aa24cd891fa9634962021-08-01T00:00:00Zhttp://ws.iwaponline.com/content/21/5/2357https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798Reservoir immersion is a serious environmental geological issue in a dual-formation structural reservoir bank (DFB) induced by dynamic surface water impoundment (SWI) that has implications for low-lying farmland and buried infrastructure. It is a major challenge to identify the dynamic immersion process and make economic and scientific joint mitigation measures for controlling groundwater immersion. Here, we develop a three-dimensional groundwater flow model and apply it to evaluate and control reservoir immersion in the typical low-lying DFB of Xingan Navigation and Power Junction Project (XGNPJ) across Ganjiang River in Jiangxi Province, China. The field-scale model is well calibrated to predict where the groundwater immersion could potentially occur. Furthermore, the effectiveness of the countermeasures adopted for the reduction of reservoir immersion areas were analysed based on the simulation model by considering the projected future combination scenarios of engineering measures. Results indicate that without engineering mitigation measures, SWI generates groundwater inundation across 23% of the total study area. Comprehensive comparative analysis on different seepage control schemes reveals that the joint engineering measures can effectively control the immersion range to 5% of the total area. The findings can provide scientific basis for groundwater immersion assessment and guide immersion control of XGNPJ project. HIGHLIGHTS Hydrological analysis related to the groundwater-surface water interactions.; Impacts of groundwater depth on reservior immersion.; Establishing a FEFLOW model for regional groundwater assessment and identification of the dynamic immersion process.; Implementation of model assessment for controlling groundwater immersion.; The joint engineering measures can effectively control the immersion range.;Yun YangWengui NanShenggen GuoDan JinJianhui WuYu ZhangZhi DouZhifang ZhouIWA Publishingarticlecut-off walldual-formation structuregroundwater modelingrelief wellreservoir immersionsurface water impoundmentWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 5, Pp 2357-2373 (2021)
institution DOAJ
collection DOAJ
language EN
topic cut-off wall
dual-formation structure
groundwater modeling
relief well
reservoir immersion
surface water impoundment
Water supply for domestic and industrial purposes
TD201-500
River, lake, and water-supply engineering (General)
TC401-506
spellingShingle cut-off wall
dual-formation structure
groundwater modeling
relief well
reservoir immersion
surface water impoundment
Water supply for domestic and industrial purposes
TD201-500
River, lake, and water-supply engineering (General)
TC401-506
Yun Yang
Wengui Nan
Shenggen Guo
Dan Jin
Jianhui Wu
Yu Zhang
Zhi Dou
Zhifang Zhou
Application of numerical modeling to reservoir immersion assessment and control in dual-formation hydrogeological unit
description Reservoir immersion is a serious environmental geological issue in a dual-formation structural reservoir bank (DFB) induced by dynamic surface water impoundment (SWI) that has implications for low-lying farmland and buried infrastructure. It is a major challenge to identify the dynamic immersion process and make economic and scientific joint mitigation measures for controlling groundwater immersion. Here, we develop a three-dimensional groundwater flow model and apply it to evaluate and control reservoir immersion in the typical low-lying DFB of Xingan Navigation and Power Junction Project (XGNPJ) across Ganjiang River in Jiangxi Province, China. The field-scale model is well calibrated to predict where the groundwater immersion could potentially occur. Furthermore, the effectiveness of the countermeasures adopted for the reduction of reservoir immersion areas were analysed based on the simulation model by considering the projected future combination scenarios of engineering measures. Results indicate that without engineering mitigation measures, SWI generates groundwater inundation across 23% of the total study area. Comprehensive comparative analysis on different seepage control schemes reveals that the joint engineering measures can effectively control the immersion range to 5% of the total area. The findings can provide scientific basis for groundwater immersion assessment and guide immersion control of XGNPJ project. HIGHLIGHTS Hydrological analysis related to the groundwater-surface water interactions.; Impacts of groundwater depth on reservior immersion.; Establishing a FEFLOW model for regional groundwater assessment and identification of the dynamic immersion process.; Implementation of model assessment for controlling groundwater immersion.; The joint engineering measures can effectively control the immersion range.;
format article
author Yun Yang
Wengui Nan
Shenggen Guo
Dan Jin
Jianhui Wu
Yu Zhang
Zhi Dou
Zhifang Zhou
author_facet Yun Yang
Wengui Nan
Shenggen Guo
Dan Jin
Jianhui Wu
Yu Zhang
Zhi Dou
Zhifang Zhou
author_sort Yun Yang
title Application of numerical modeling to reservoir immersion assessment and control in dual-formation hydrogeological unit
title_short Application of numerical modeling to reservoir immersion assessment and control in dual-formation hydrogeological unit
title_full Application of numerical modeling to reservoir immersion assessment and control in dual-formation hydrogeological unit
title_fullStr Application of numerical modeling to reservoir immersion assessment and control in dual-formation hydrogeological unit
title_full_unstemmed Application of numerical modeling to reservoir immersion assessment and control in dual-formation hydrogeological unit
title_sort application of numerical modeling to reservoir immersion assessment and control in dual-formation hydrogeological unit
publisher IWA Publishing
publishDate 2021
url https://doaj.org/article/8240d641a0c14c5aa24cd891fa963496
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AT danjin applicationofnumericalmodelingtoreservoirimmersionassessmentandcontrolindualformationhydrogeologicalunit
AT jianhuiwu applicationofnumericalmodelingtoreservoirimmersionassessmentandcontrolindualformationhydrogeologicalunit
AT yuzhang applicationofnumericalmodelingtoreservoirimmersionassessmentandcontrolindualformationhydrogeologicalunit
AT zhidou applicationofnumericalmodelingtoreservoirimmersionassessmentandcontrolindualformationhydrogeologicalunit
AT zhifangzhou applicationofnumericalmodelingtoreservoirimmersionassessmentandcontrolindualformationhydrogeologicalunit
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