煤炭工程 ›› 2013, Vol. 45 ›› Issue (9): 98-100.doi: 10.11799/ce201309033

• 研究探讨 • 上一篇    下一篇

煤矸石山温度场的温度补偿数学模型及最优观测距离探究

王海娟,夏清,胡振琪,肖武   

  1. 中国矿业大学(北京)
  • 收稿日期:2013-04-10 修回日期:2013-05-14 出版日期:2013-09-10 发布日期:2013-09-10
  • 通讯作者: 胡振琪 E-mail:huzqbj@yahoo.com.cn

Study on optimal observation distance of temperature field of waste piles based on thermal infrared imager

  • Received:2013-04-10 Revised:2013-05-14 Online:2013-09-10 Published:2013-09-10

摘要:

我国长期的煤炭开采已经导致大量煤矸石山正在自燃,堆积的自燃矸石山引发矿区生态环境和社会安全问题,因此对自燃煤矸石山表面温度场的预警和监测是亟待解决的关键问题。而距离对煤矸石山温度场的探测是一个重要的影响因素,本文设计了利用红外热像仪采用不同的距离对煤矸石山温度场进行探测的实验,以分析红外热像仪的测温原理以及距离对其测温精度的影响,实验结果表明:采用红外热像仪对煤矸石山温度场进行探测,其最优观测距离为13m-18m。通过整理实验数据,拟合出了距离-温度曲线,提取出误差比例因子,利用误差比例因子拟合公式,对数据进行校正,提高观测精度,这对于利用红外成像技术探测煤矸石山表面温度场具有重要的参考价值。

关键词: 煤矸石, 温度场, 距离, 温度探测, 数学模型

Abstract:

Long-term coal mining has led to a large number of waste piles spontaneous combusting in China. Mine ecological environment and social security issues are raised by accumulation of spontaneous combusting waste piles. The warning and monitoring of spontaneous combustion of surface temperature field of waste piles are the key issues to be solved. However,the distance detection is an important factor for temperature field of waste piles. Different distance detection experiments on temperature field of waste piles based on infrared thermal imager are designed to analyze the temperature measurement principle of infrared thermal imager and the impact of distance on the temperature measurement accuracy. The result shows that the optimal observation distance is from 13m to 18m based on infrared thermal imager to detect temperature field of waste piles. According to the experimental data, distance-temperature curve is fitted, error scale factor is extracted, the data is adjusted by error scale factor to improve accuracy. It provides important reference value to the use infrared thermal imager to detect surface temperature field of waste piles.

Key words: waste piles, temperature field, distance, temperature detection, mathematical model