Study and Practices on High Temperature Heat Disaster Prevention and Control Technology in Yongchuan Mine
Abstract：According to the high temperature heat disaster phenomenon occurred in the heading face of -500 m level during the mine development period of Yongchuan Mine, with the application of the local temperature water cooling system with the mine inrush water and the heat removing with the air retuning ventilation, the dry bulb temperature within 100 m near the heading face was averagely reduced by 5.6 ℃, the wet-bulb temperature was averagely reduced by 8. 5 ℃ and the relative humidity was averagely reduced by 20%. The site measurement found that the dry bulb temperature of the heading face after the temperature cooling had a linear relationship to the dry bulb tem- perature at the exit of the ventilation duct and had a second parabolic relationship to the dry bulb temperature at certain scope in the ventilation duct behind the air cooler. In addition, the wet bulb temperature difference near the heading face was high and could be 5 - 7 ℃ in maximum. There was a high moisture exchange occurred in the air flow retuning process and thus a retuning hot phenomenon would be occurred and enlarged.
Keywords：mine heat disastertemperature cooling systemmine roadway heading facedry bulb temperaturerelative humidity
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 42-45 )