Analysis of heat sources in deep underground mining of gold mines
To quantify the heat released during the deep mining of gold mines and provide suggestions for heat hazard management,this study analyzed the variation of original rock temperature with depth and calculated the heat release from blasting,surrounding rock,and equipment.The results show that the geothermal gradient of the mining area is approximately 1.7℃/100 m.At the-752 m level,the original rock temperature reaches 34.3℃.During deep mining,the main heat sources in summer are heat release from electric power of mechanical equipment and air compression,accounting for 38.18%and 26.56%of the total heat,respectively.In winter,the primary heat sources are heat released from surrounding rocks and mechanical equipment,accounting for 38.74%and 24.81%of the total heat,respectively.With a ventilation rate of 67.9 m3/s,the overall environment during deep mining can be kept suitable.In cases of localized high temperatures,targeted cooling can be achieved by increasing ventilation.
deep mininggold minesoriginal rock temperatureunderground heat sourceshigh-temperature heat hazard
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