Influence of Land Subsidence on Minable Groundwater Resources

被引：0
|
作者：
Luo Z. [1 ]
Wang X. [1 ]
Dai J. [2 ]
Li Z. [1 ]
Li S. [1 ]
机构：
[1] School of Earth Sciences and Engineering, Hohai University, Nanjing
[2] The Fourth Hydrological Engineering Geology Brigade of Hebei Geology and Mineral Bureau, Cangzhou
来源：
Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences | 2024年 / 49卷 / 01期
关键词：
geohydrology; land subsidence; minable groundwater resources; numerical simulation; three⁃dimensional full coupling;
D O I：
10.3799/dqkx.2022.143
中图分类号：
学科分类号：
摘要：
In order to study the impact of land subsidence on minable groundwater resources, taking Cangzhou City in North China as an example, based on Biot consolidation theory, a three-dimensional variable-parameter fully coupled viscoelastic-plastic numerical model of groundwater exploitation and land subsidence is established. Regarding groundwater mining from 2019 to 2030 based on current conditions and a ban on mining from 2031 to 2040 (scheme 1), compression mining from 2019 to 2030 and a ban on mining from 2031 to 2040 (scheme 2), and continuous ban on groundwater mining from 2019 to 2040 (scheme 3), the land subsidence of each scheme is predicted, and the minable groundwater resources of each scheme from 2041 to 2050 are reasonably evaluated. Results show: from 2041 to 2050, the minable groundwater resources of scheme 1, scheme 2 and scheme 3 are 1.29× 108 m3/a, 1.35×108 m3/a and 1.43×108 m3/a, respectively. Compared with scheme 1, the maximum cumulative land subsidence of scheme 2 is reduced by 84.4 mm, and its minable groundwater resources increase by 6×106 m3/a. Compared with scheme 1, scheme 3 achieves a ground rebound of 88 mm, and its minable groundwater resources increase by 1.4×107 m3/a. These fully explain that the amount of recoverable groundwater resources is relatively small under the condition of severe land subsidence. © 2024 China University of Geosciences. All rights reserved.
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页码：238 / 252
页数：14
相关论文
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