%A Lü Yaxin, Luo Zujiang, Xu Chenghua %T Evaluation of Geothermal Water Resources in Tangshan Area, Nanjing %0 Journal Article %D 2020 %J Journal of Jilin University(Earth Science Edition) %R 10.13278/j.cnki.jjuese.20190138 %P 1844-1853 %V 50 %N 6 %U {http://xuebao.jlu.edu.cn/dxb/CN/abstract/article_11225.shtml} %8 2020-11-26 %X 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.