Journal of Jilin University(Earth Science Edition) ›› 2020, Vol. 50 ›› Issue (6): 1844-1853.doi: 10.13278/j.cnki.jjuese.20190138

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Evaluation of Geothermal Water Resources in Tangshan Area, Nanjing

Lü Yaxin1, Luo Zujiang1, Xu Chenghua2   

  1. 1. School of Earth Science and Engineering, Hohai University, Nanjing 211100, China;
    2. The First Geological Brigade of the Bureau of Geology and Mineral Resources of Jiangsu, Nanjing 210041, China
  • Received:2019-06-28 Published:2020-12-11
  • Supported by:
    Supported by Project of Geological Survey of Jiangsu (2018-96-13)

Abstract: In order to accurately evaluate and plan the allowable exploitation quantity of geothermal water in Tangshan area, Nanjing, and to predict the changes of water level and temperature under the planned mining conditions, based on a full understanding of the hydrogeological information of geothermal water system, a hydrogeological conceptual model in Tangshan area was generalized,and a three-dimensional coupling mathematical model of unsteady seepage and heat transfer of groundwater was established in this area. The allowable exploitation quantity of geothermal water and the changes of water level and temperature were predicted under the condition that the drawdown is no more than 50 m. The results of simulation show that the allowable exploitation quantity of 14 existing geothermal water wells in Tangshan varies from 125.0 m3/d (R11) to 1 450.0 m3/d (R08). The total allowable exploitation quantity of geothermal water is 3.08×106m3/a. With the decrease of geothermal water level, its temperature rises 2-3℃ per year on average.

Key words: Tangshan area in Nanjing, geothermal water, numerical simulation, allowable exploitation quantity, water level and temperature

CLC Number: 

  • TV21
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