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- Title
Groundwater Impact Analysis of Tunnel Engineering Water Discharge by Using Numerical Model.
- Authors
ZHANG Li
- Abstract
Because of the change of natural conditions and the influence of human activities, there are many environmental and geological problems, such as cut-off or attenuation, regional water level decline and water quality deterioration in the karst groundwater, it is necessary to study the impact of tunnel construction drainage on groundwater in the spring area for the protection of the ecological environment in the spring area. Based on the deep tunnel of a project in Shanxi through the Liulin springs area, the numerical model of groundwater in the springs area where the tunnel project is located is constructed (the numerical model of groundwater of the basin is developed by using the MODFLOW software). Based on the long-term observation well data of groundwater, the model and related parameters are verified and calibrated, and the characteristics of recharge, runoff and discharge of groundwater system are described by model simulation, this paper analyzes the impact and recoverability of early construction and later drainage on the karst water level dynamics and springs flow. The research results show that due to the storage effect of the aquifer underground reservoir in the Zhike-Chemingyu springs area, the early and subsequent construction drainage has less impact on the supply of Liulin springs and has a significant impact on the regional groundwater level in the Zhike Springs Area and the Chemingyu Springs Area, it is estimated that by the end of 2025, a landing funnel will be formed in the north of Zhike Town. The research methods and results have a reference value for the ecological environment protection of other springs areas.
- Subjects
SHANXI Sheng (China); WATER springs; GROUNDWATER analysis; WATER tunnels; WATER use; ENGINEERING mathematics; ENVIRONMENTAL protection
- Publication
China Rural Water & Hydropower, 2024, Issue 2, p37
- ISSN
1007-2284
- Publication type
Article
- DOI
10.12396/znsd.230907