Impact of pumping and injection mode on thermal and seepage field in the energy extraction area
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Abstract:
A three 2dimensional water 2heat coupled numerical model was developed to simulate and analyze the evolution of seep2 age and temperature fields under different layout schemes of pumping and injection wells in the Yupinxuan food industrial park of Xi can. The results showed that ( 1) the variation of groundwater temperature field is not only associated with the natural groundwater flow field, but also affected by the layout of pumping and injection wells, and the layout with injection wells on the opposite side has greater effects on the geothermal field than that with the injection wells on the same side; ( 2) the greater the distance between wells is, the longer the thermal transfixion of pumping wells encounters; ( 3) from the point of view of re 2 charge, the layout with injection wells on the opposite side is better than the layout with injection wells on the same side; and ( 4) from the point of view of controlling transfixion, the layout with injection wells on the same side is better than the layout with injection wells on the opposite side. According to the specific conditions of test site, both layout schemes broke through the phenomenon of thermal transfixion, and the layout with injection wells on the opposite side was selected if only the effects of seepage field were considered.
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