Abstract:With the increase of mining depth in underground mine, the problem of high temperature heat damage is becoming more and more prominent, and now it has become a major technical problem encountered in deep mining. In order to solve the problem of high temperature heat harm underground working environment, it is necessary for the underground thermal harm due to factors in-depth analysis, calculation of heat quantity category and the main underground heat source, and make the effective heat harm control scheme. Based on comprehensive analysis of heat source on the high temperature mine, it is put forward that a technical scheme to mine water as cooling cold source, through the natural cold energy in mine water contains drawing on the work surface for high temperature and heat harm control. The scheme combines the present mining status of 1118m Jinqu gold mine, and sets up a cooling and cooling system near the 640m horizontal return air well. It can control the temperature and humidity of the mining face at the middle level of 280m. The practice results showed that the 280m level after cooling end working environment to control the temperature of 28℃, compared to before cooling reduces the 4~5℃, the relative humidity is controlled at about 75%.