Journal of Jilin University(Earth Science Edition) ›› 2021, Vol. 51 ›› Issue (2): 526-532.doi: 10.13278/j.cnki.jjuese.20190212

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Application of COMSOL Platform in Analysis of Interaction of Urban Underground Multiple Resources

Zhou Dankun1, Li Xiaozhao1,2, Chang Xiaojun3   

  1. 1. School of Earth Science and Engineering, Nanjing University, Nanjing 210023, China;
    2. Sino Probe Center, Chinese Academy of Geological Sciences, Beijing 100037, China;
    3. Nanjing Center of China Geological Survey, Nanjing 210016, China
  • Received:2019-10-02 Online:2021-03-26 Published:2021-04-06
  • Supported by:
    Supported by the Project of China Geological Survey(DD20160245)

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Abstract: Aiming at the shortcomings of the system dynamics method in the analysis of the interaction of underground resources, the multi-field coupling theory of porous media was introduced. Taking the hypothetical model of shallow geothermal energy resource development in the form of GSHP as an example, a coupled numerical model of temperature field, seepage field and stress field was established by using the COMSOL platform, and the changes of regional multiple physical fields before and after the GSHP operation and the adjustment of pumping and recharging wells were compared. The results show that the seepage field around the pumping well and recharging well changed significantly after the operation of groundwater source heat pump. After 10 a, the water temperature of the pumping well dropped from the initial 21℃ to about 17℃, and the regional land subsidence was about 2 m. After the pumping and recharging wells were reversed, the temperature of the pumping well decreased from 4.0℃ to less than 0.5℃. All these indicate that the COMSOL platform has good application potential in the interactive analysis and optimal utilization of various underground resources.

Key words: multiple resources, mutual influence, multi-field coupling, COMSOL

CLC Number: 

  • TP391
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