Numerical simulation of the interaction between mine water drainage and recharge: A case study of Wutongzhuang coal mine in Heibei Province, China
Water inflow poses a critical safety concern in coal mining. The pressing challenge in current mine water inflow research is the need to enhance the prediction of dynamic changes in mine water inflow across different mining stages. In this study, the hydrogeological conditions and aquifer structural...
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Elsevier
2024-01-01
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| Series: | Ecological Indicators |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1470160X24000256 |
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| author | Bin Liu Guanghui Liu Jinxia Sha Jianwei Sun Xian Zhao Shuai Ren Ruiting Liu Su Li |
| author_facet | Bin Liu Guanghui Liu Jinxia Sha Jianwei Sun Xian Zhao Shuai Ren Ruiting Liu Su Li |
| author_sort | Bin Liu |
| collection | DOAJ |
| description | Water inflow poses a critical safety concern in coal mining. The pressing challenge in current mine water inflow research is the need to enhance the prediction of dynamic changes in mine water inflow across different mining stages. In this study, the hydrogeological conditions and aquifer structural characteristics of the Wutongzhuang Coal Mine in Hebei Province, China were analyzed, and the results were combined with pumping test and drilling data. A numerical model of groundwater flow in the study area was established using Visual MODFLOW and the model was calibrated and verified by comparing its results with the measured values to ensure that it realistically reflected the state of groundwater movement in the study area. The results of numerical simulation indicated that: (1) The water level of the Ordovician aquifer varies significantly by season. A large exposed area of Ordovician limestone in the western mountainous region receives a large amount of rainfall infiltration recharge in the summer rainy period that raises the water level of the Ordovician aquifer in the study area. (2) The groundwater system in the study area is in an equilibrium state, with the water inflow approximately equal to the outflow. (3) The recharge of mine drainage water has a slight positive effect on the Ordovician water level and the floor water inflow, with the impact on the water level of the aquifer decreasing as the distance from the recharge well and the import of Ordovician limestone water increase. In cases in which there is mine water recharge, the water level of the Ordovician aquifer is approximately 0.33 to 1.37 m higher than in cases without recharge, resulting in an increase in water inflow of approximately 10.6 m3/d. (4) In cases in which there is recharge of all drainage water, the maximum water inflow into the fifth mining area is 3,491.3 m3/d, which is 12.5 m3/d higher than in the case without recharge. These results provide important technical references for the formulation of mining schemes and water prevention measures in mining areas. |
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| institution | Directory Open Access Journal |
| issn | 1470-160X |
| language | English |
| last_indexed | 2024-03-08T14:26:21Z |
| publishDate | 2024-01-01 |
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| record_format | Article |
| series | Ecological Indicators |
| spelling | doaj.art-9fd195bbfab34e298c4bb1d1332d82142024-01-13T04:43:43ZengElsevierEcological Indicators1470-160X2024-01-01158111568Numerical simulation of the interaction between mine water drainage and recharge: A case study of Wutongzhuang coal mine in Heibei Province, ChinaBin Liu0Guanghui Liu1Jinxia Sha2Jianwei Sun3Xian Zhao4Shuai Ren5Ruiting Liu6Su Li7School of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056038, China; Hebei Key Laboratory of Intelligent Water Conservancy, Handan 056001, ChinaSchool of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056038, ChinaSchool of Earth Science and Engineering, Hebei University of Engineering, Handan 056038, China; Corresponding author.Handan Water Conservancy Bureau, Handan 056002, ChinaSchool of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056038, ChinaHandan Water Conservancy Bureau, Handan 056002, ChinaSchool of Water Conservancy and Hydroelectric Power, Hebei University of Engineering, Handan 056038, ChinaSchool of Mining and Geomatics Engineering, Hebei University of Engineering, Handan 056038, ChinaWater inflow poses a critical safety concern in coal mining. The pressing challenge in current mine water inflow research is the need to enhance the prediction of dynamic changes in mine water inflow across different mining stages. In this study, the hydrogeological conditions and aquifer structural characteristics of the Wutongzhuang Coal Mine in Hebei Province, China were analyzed, and the results were combined with pumping test and drilling data. A numerical model of groundwater flow in the study area was established using Visual MODFLOW and the model was calibrated and verified by comparing its results with the measured values to ensure that it realistically reflected the state of groundwater movement in the study area. The results of numerical simulation indicated that: (1) The water level of the Ordovician aquifer varies significantly by season. A large exposed area of Ordovician limestone in the western mountainous region receives a large amount of rainfall infiltration recharge in the summer rainy period that raises the water level of the Ordovician aquifer in the study area. (2) The groundwater system in the study area is in an equilibrium state, with the water inflow approximately equal to the outflow. (3) The recharge of mine drainage water has a slight positive effect on the Ordovician water level and the floor water inflow, with the impact on the water level of the aquifer decreasing as the distance from the recharge well and the import of Ordovician limestone water increase. In cases in which there is mine water recharge, the water level of the Ordovician aquifer is approximately 0.33 to 1.37 m higher than in cases without recharge, resulting in an increase in water inflow of approximately 10.6 m3/d. (4) In cases in which there is recharge of all drainage water, the maximum water inflow into the fifth mining area is 3,491.3 m3/d, which is 12.5 m3/d higher than in the case without recharge. These results provide important technical references for the formulation of mining schemes and water prevention measures in mining areas.http://www.sciencedirect.com/science/article/pii/S1470160X24000256GroundwaterNumerical simulationMine water inflowRechargePrediction |
| spellingShingle | Bin Liu Guanghui Liu Jinxia Sha Jianwei Sun Xian Zhao Shuai Ren Ruiting Liu Su Li Numerical simulation of the interaction between mine water drainage and recharge: A case study of Wutongzhuang coal mine in Heibei Province, China Ecological Indicators Groundwater Numerical simulation Mine water inflow Recharge Prediction |
| title | Numerical simulation of the interaction between mine water drainage and recharge: A case study of Wutongzhuang coal mine in Heibei Province, China |
| title_full | Numerical simulation of the interaction between mine water drainage and recharge: A case study of Wutongzhuang coal mine in Heibei Province, China |
| title_fullStr | Numerical simulation of the interaction between mine water drainage and recharge: A case study of Wutongzhuang coal mine in Heibei Province, China |
| title_full_unstemmed | Numerical simulation of the interaction between mine water drainage and recharge: A case study of Wutongzhuang coal mine in Heibei Province, China |
| title_short | Numerical simulation of the interaction between mine water drainage and recharge: A case study of Wutongzhuang coal mine in Heibei Province, China |
| title_sort | numerical simulation of the interaction between mine water drainage and recharge a case study of wutongzhuang coal mine in heibei province china |
| topic | Groundwater Numerical simulation Mine water inflow Recharge Prediction |
| url | http://www.sciencedirect.com/science/article/pii/S1470160X24000256 |
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