Layout and Parameter Analysis of the Cooling System with Mine Water as Cold Source in Linglong Gold Mine

Abstract

As the heat hazard problem in the deep mine becomes more prominent, it is difficult to alleviate the high-temperature problem by increasing the air supply and adjusting the ventilation mode alone. In order to solve the issue of heat damage in the Linglong Gold Mine, a cooling system based on water source heat pump technology and utilizing the return air system to exhaust heat was constructed, and each system was rationally arranged in conjunction with the mine’s actual conditions. The reasonable critical threshold of cooling system parameters is then determined by numerical simulation and field application verification. The results indicate that the closed cycle adopted by the cooling system can effectively solve the problem of groundwater shortage. The heat can be discharged directly to the return air shaft to prevent the impact of secondary heat hazards. The temperature near the working face can be reduced from 35°C to below 28°C. This system effectively resolves the issues of water shortage, heat release, and cold transfer in the water source heat pump technology and provides a reference for the application of other mines.