LIU Rong,CAO Guoliang,ZHAO Yong,et al.A study of the influence of land subsidence on hydraulic parameters and water supply capacity[J].Hydrogeology & Engineering Geology,2019,46(3):47.[doi:10.16030/j.cnki.issn.1000-3665.2019.03.07]





A study of the influence of land subsidence on hydraulic parameters and water supply capacity
1.中国水利水电科学研究院流域水循环模拟与调控国家重点实验室,北京100038;2.河北省水文水资源勘测局,河北 石家庄050031
LIU Rong1 CAO Guoliang1 ZHAO Yong1 LU Chuiyu1 SUN Qingyan1 YAN Lingjia1 PENG Peng2
1.State Key Lab. of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, Beijing100038,China;2.Hebei Hydrological and Water Resources Survey Bureau, Hebei, Shijiazhuang050031, China
deep groundwater land subsidence storage coefficient nonlinear model water supply capacity
Land subsidence is mainly caused by the exploitation of groundwater in deep-seated aquifers, which is mainly composed of the compressed water release from the aquitards. At the same time, the reduction in void ratio caused by the compression of the aquitards will further reduce the storage coefficient and the coefficient of permeability, which will affect the amount of non-elastic water release and leakage recharge of the aquitard. The nonlinear variation in hydrogeological parameters and the feedback effect on the confined aquifer systems during land subsidence have also become frontier issues in hydrogeology. In order to make a quantitative and qualitative exploration of the relationship between the amount of groundwater extraction, amount of sedimentation, changes in geological parameters and changes in water supply capacity, this paper constructs a 1-D nonlinear settlement model of the change in storage coefficient and coefficient of permeability based on the change in groundwater levels and hydrogeological parameters of the deep confined aquifer in the Changzhou area. The simulation results show that the storage coefficient can be reduced by up to 77% with the decrease in hydraulic head of the confined aquifer, and the water supply capacity and water storage capacity of the aquifer system will decrease by 50% or more with the compression deformation. The research results are of important reference significance for understanding the relationship between hydrogeological parameters and stress changes and scientifically evaluating the groundwater storage capacity of confined aquifers.


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收稿日期: 2018-08-22; 修订日期: 2018-11-24
基金项目: 国家重点研发计划课题(2016YFC0401404;2017YFC0406102);国家自然科学基金项目(51509264)
第一作者: 刘蓉(1993-),女,硕士研究生,主要从事水资源评价研究。E-mail: 270178153@qq.com
通讯作者: 曹国亮(1981-),男,高级工程师,主要从事水文地质、环境地质研究。E-mail:caogl@iwhr.com
更新日期/Last Update: 2019-05-15