Development and application of temperature detector in coal roadway

During the preventing fire of the mine tunnel,the byaction heat storage environment,the power of the air leakage and the distribution of the oxygen in the loose coal,the high temperature in the zone of the deformation and ups or downs of the roadway,including the cross zone of the roadway,can cause spontaneous combustion.The main purpose of measuring coal spontaneous combustion temperature is to locate the coal spontaneous combustion in high temperature area.Detection of coal self ignition temperature(≥100 ℃) has been one of the major problems of safety production in coal mine.According to the actual need,it employed single chip microcomputer technology to develop and research a new type of temperature detector of the coal roadway,which is used in some village mines as a pilot for field application,to get the accurate real-time data and predict correctly the change and trend of the temperature of the coal mine spontaneous combustion.The rise and fall of the coal temperature has different and volatility in roadway within the scope of certain depth.High temperature point distance form coal wall is 1 ~ 2 m generally,and larger than 2 m coal temperature tends to be stable.Verified by field tests,this instrument is simple,accurate,and can better reflect the coal temperature.