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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IWA Publishing
2021
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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 |
work_keys_str_mv |
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_version_ |
1718443806145118208 |