According to the phenomenon of high temperature and heat damage caused by poor ventilation in the deep -1 140 m horizontal roadway excavation of Sanshandao Gold Mine,and based on the underground production situation,the study makes full use of the existing conditions,and calculates the cooling load required for the local cooling system.Comprehensively considering the relative position of the cooling unit,the cooling device (underground -1 140 m level) and the condensation heat discharge ways(low-temperature water gushing in the water bin) etc.,the artificial cooling scheme of underground centralized cooling and condensation heat discharge from water gushing of underground sump is designed and tested,which is suitable for the production and ventilation of -1 140 m level.During the test,the ambient temperature is reduced to about 32 ℃,improving working environment in a significant way.Local refrigeration and cooling technology provides engineering experience for the long-term planning of centralized cooling system for deep mining of mines,and also provides reference for similar projects.