Evolution Characteristics of Groundwater System in Deep Mining Areas in Western China Based on Feflow Software

ZHANG Geyi; WANG Lujun; ZHANG Suo; ZHAO Ze; ZHANG Yong

doi:10.13779/j.cnki.issn1001-0076.2025.02.003

2025 Vol. 45, No. 2

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Article navigation > Conservation and Utilization of Mineral Resources > 2025 > 45(2): 29-37

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ZHANG Geyi, WANG Lujun, ZHANG Suo, ZHAO Ze, ZHANG Yong. Evolution Characteristics of Groundwater System in Deep Mining Areas in Western China Based on Feflow Software[J]. Conservation and Utilization of Mineral Resources, 2025, 45(2): 29-37. doi: 10.13779/j.cnki.issn1001-0076.2025.02.003

Citation:

ZHANG Geyi, WANG Lujun, ZHANG Suo, ZHAO Ze, ZHANG Yong. Evolution Characteristics of Groundwater System in Deep Mining Areas in Western China Based on Feflow Software[J]. Conservation and Utilization of Mineral Resources, 2025, 45(2): 29-37. doi: 10.13779/j.cnki.issn1001-0076.2025.02.003

Evolution Characteristics of Groundwater System in Deep Mining Areas in Western China Based on Feflow Software

1.
Beijing Low Carbon and Clean Energy Research Institute State Key Laboratory of Water Resources Protection and Utilization in Coal Mining, Beijing102211, China
2.
Shenhua Xinjie Energy Co., Ltd., Erdos 0172003, Inner Mongolia, China
3.
China University of Mining and Technology (Beijing), Beijing 100083, China

Received Date: 20 January 2025

Publish Date: 15 April 2025

Abstract

Abstract

In the deep mining area of western China, there are abundant and high−quality Quaternary phreatic water and Cretaceous Luohe Formation aquifers, which serve as crucial recharge sources for the Chagannao Water Plant's drinking water supply and lake wetlands. This region exhibits high requirements for groundwater resource protection and sensitive water environments. This study aims to provide a reliable basis for future safe coal mining and comprehensive water resource utilization in the mining area. The research first determines the development height of water−conducting fracture zones after mining the 2−2 coal seam through similar simulation experiments. Subsequently, numerical simulation methods are employed to qualitatively describe the mutual influences and spatiotemporal evolution patterns among aquifers, while quantitatively analyzing the main controlling factors of aquifer recharge/discharge and mine water inflow. Key findings include: (1) The maximum height of water−conducting fractures reaches 148 m, not penetrating the Anding Formation aquiclude; (2) Mining activities cause significant water level decline in Zhiluo and Yan'an Formations, forming depression cones, while the Cretaceous Zhidan Group aquifer shows negligible water level changes; (3) The mine water inflow is calculated to be 17 032 m³/d. This study reveals the evolution patterns of overburden fracture fields and seepage fields during coal mining, and provides theoretical support for implementing "water−preserved coal mining" strategies in the area.
- development height of the water−conducting fissure zone /
- numerical simulation /
- evolution characteristics of aquifer /
- mine water inflow /
- water resources protection

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References

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