Research on doublets wells to store cold energy for heat-harm treatment in deep mine

With the development of economy,the coal mining goes deeper and deeper and the problem of heat-harm is worse.In order to control the heat-harm the technology of aquifers to store cold energy is utilized,together with heat exchange machine system and doublets wells.This paper takes Jiahe mine as an example to demonstrate.With its geological conditions,thermodynamic and hydraulic parameters,the isotherms of aquifers under 40 m in the period of cold energy storage and those of I-I profile in the period of refrigeration are analyzed.It is proved theoretically that this technology is feasible for storing and supplying cold energy.Moreover,curve of temperature rising in the well for cold energy storage presents the aquifers is effective for cold energy storage in the period of no pumping and no re-injection.