南京汤山地区地热水资源评价

为了准确规划和评价南京汤山地区地热水资源的可开采量，预测在规划开采条件下的地热水水位和水温的变化，在充分研究了汤山地区地热水系统水文地质特征的基础上，概化出南京汤山地区地热水系统的水文地质概念模型，建立了地热水非稳定渗流和热量运移三维耦合数学模型，模拟预测了降深不超过50 m时的地热水可开采量及其水位和水温的变化。结果表明：汤山地区现有14口地热水井的可开采量有所差异，最大为R08（温泉公司1#），开采量可达1 450.0 m³/d，最小为R11（中闻集团2#），开采量仅有125.0 m³/d，地热水的总可开采量为3.08×10⁶m³/a；且随着开采的进行，地热水水位逐渐下降，各地热水井温度逐渐上升，上升幅度略有不同，年均水温上升2~3℃。

Evaluation of Geothermal Water Resources in Tangshan Area,Nanjing

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.