巷道煤体温度探测仪的开发与应用

1.西安科技大学 能源学院,陕西 西安 710054; 2.陕西煤业股份有限责任公司,陕西西安710075; 3. 陕西能源职业技术学院,陕西 咸阳 712000

巷道煤体自燃; 温度探测; 单片机; 传感器

Development and application of temperature detector in coal roadway
ZHU Zhao-wei1,2, LIU Jia-yuan1, BAO Yin-tan1,3

(1.College of Energy Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China; 2.Shaanxi Coal Industry Company Limited, Xi'an 710075,China; 3.Shaanxi Institute of Energy Technology,Xianyang 712000,China)

coal spontaneous combustion fire of roadway; temperature detector; microcontroller; sensor

备注

在煤矿巷道防灭火工作中,由巷道松散煤体的蓄热散热环境、漏风动力和强度以及松散煤体内氧气分布的共同作用,在巷道变形与起伏带、巷道交叉应力集中区等地点煤柱内常出现高温,极易引发煤自燃火灾。测量煤自燃温度的主要目的 是为了定位煤炭自燃高温区域。探测煤炭自燃温度(≥100 ℃)一直是煤矿安全生产过程中的重大难题之一。基于单片机技术,开发研制了一种新型巷道煤体温度探测仪,并以某煤矿为试点进行了现场应用,对巷道煤体温度信息进行了采集,得到了煤体温度的实时数据和变化发展趋势,即巷道煤体一定深度范围内,温度有不同程度的升降,具有波动性。煤壁内高温点距煤壁距离一般都在1~2 m左右,大于2 m以后煤体内温度趋于稳定。经现场试验验证,此仪器操作简便,测试温度准确稳定,能够较好的反映煤壁内部的温度数据。

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.