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| DOI：10.13522/j.cnki.ggps.20180478 |
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| Analyzing the Effect of Reducing Aquifer Pumping from the Subsidized Center on Groundwater Utilization in Beijing Plain |
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QIN Huanhuan, ZHENG Chunmiao, SUN Zhanxue, GAO Bai
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1.State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang 330013, China;2.School of Water Resources and Environmental Engineering, East China University of Technology, Nanchang 330013, China; 3. School of Environmental Science and Engineering, South University of Science and Technology, Shenzhen 518055, China
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| Abstract: |
| 【Objective】The objective of this paper is to study the influence of reducing groundwater pumping from the subsidized center on groundwater utilization in Beijing Plain.【Method】Based on the unsteady groundwater flow model and scenario analysis, four scenarios (BAU, PR100, PR50 and PR520) were designed to simulate the impact of groundwater-pumping reduction from the subsidized center on the groundwater utilization in Beijing plain.【Result】On average for the prediction period, scenario BAU will deplete 116 million m3 aquifer storage per year, while scenarios PR100, PR50 and PR520 will recover 352, 118 and 283 million m3 aquifer storage per year, respectively. An exploitation scenario R, which meets the land subsidence control goal in the future, is designed through the analysis of the above scenarios: pumping reduction amounts in the subsidence centers are 0.051 billion m3/a (100% reduction), 0.012 billion m3/a (20% reduction) and 0.18 billion m3/a (50% reduction) in zones Baxianzhuang, Tianzhu and Wangsiying, respectively. The total pumping amount is 1 928 million m3/a. 【Conclusion】Groundwater pumping reduction in the subsidence center can effectively recover the groundwater level and aquifer storage and is the most direct and effective method to solve the serious groundwater overexploitation and related land subsidence in Beijing. However, the proportion of groundwater pumping reduction should be reasonably determined to ensure the coordinated development of social economy and groundwater. |
| Key words: groundwater pumping reduction; Beijing plain; subsidence center; scenario analysis |
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