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Volume 41 Issue 1
Jan.  2022
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Article Navigation >  Bulletin of Geological Science and Technology  > 2022  >  41(1): 177-182
Niu Hong, Wei Xiaoya, Lin Jingjing, Wang Junzhi, Ni Shengnan, Li Shuzi. Experimental simulation of salt transport in hierarchically nested groundwater flow systems[J]. Bulletin of Geological Science and Technology, 2022, 41(1): 177-182. doi: 10.19509/j.cnki.dzkq.2022.0019
Citation: Niu Hong, Wei Xiaoya, Lin Jingjing, Wang Junzhi, Ni Shengnan, Li Shuzi. Experimental simulation of salt transport in hierarchically nested groundwater flow systems[J]. Bulletin of Geological Science and Technology, 2022, 41(1): 177-182. doi: 10.19509/j.cnki.dzkq.2022.0019
shu

Experimental simulation of salt transport in hierarchically nested groundwater flow systems

doi: 10.19509/j.cnki.dzkq.2022.0019
  • Received Date: 26 Oct 2021
    Available Online: 02 Mar 2022
    Abstract
  • Groundwater age and groundwater residence time contain important information about groundwater circulation and evolutionary processes, and have been widely used in the study of groundwater circulation patterns in basins.In this paper, we simulated a three-stage flow system model through a multi-stage groundwater flow system demonstrator, and simulated the groundwater age distribution and groundwater residence time distribution based, and found that the bottom of the basin, the downstream of the regional flow, and the basin retention area responded the latest.The local flow system in the shallow part has relatively low concentration values after stabilization, the intermediate flow system is also relatively low compared to the regional flow system in the deep part, and the stagnant zone has relatively large concentration values due to salt accumulation.The groundwater age distribution curves are single-peaked, and the circulation time of the regional flow system is greater than that of the intermediate flow system than that of the local flow system.The residence time distribution monitored in the discharge zones shows that different levels of recharge will produce early, middle and late peaks, and the peaks correspond exactly to the level of the groundwater flow system.It can be judged from the peaks in the discharge zones that the groundwater is recharged from the local, intermediate or regional flow system, and thus the source of contaminants can be determined.The present research results have some significance for the evolution of groundwater circulation and the improvement of groundwater flow system theory.

     

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