近巷高温区域红外探测与反演  

Detecting and inversing high temperature area of near roadway with infrared thermal imaging

作　　者：秦汝祥[1,2] 陶远[1] 唐明云[1,2] 陈凯[1] 

机构地区：[1]安徽理工大学能源与安全学院,安徽淮南232001 [2]安徽理工大学煤矿安全高效开采省部共建教育部重点实验室,安徽淮南232001

出　　处：《煤炭学报》2014年第A01期112-116,共5页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(50974003);安徽高校省级自然科学基金资助项目(KJ2013a096)

摘　　要：为准确检测、判定近巷煤体高温点或火源,实现矿井快速防灭火,利用高温点的热效应,依据传热学相关理论,建立了近巷煤体内部高温点反演算法。利用红外热像仪探测了某矿巷道壁面温度场,结合测试地点风流温度,推算了煤体内部高温点深度和温度。结果表明,探测的近巷高温点主要在距离巷道表面约0.09~0.15 m深度以内的范围,煤体内部最高温度达到了70℃左右。根据这一结果,采取了针对性的防灭火措施,气体观测结果显示,高温点的CO气体浓度由最初的100×10-6~160×10-6快速降至了10×10-6左右。可见,红外热像反演方法可以确定近巷煤体的高温点。In order to detect and determine high temperature area or fire point in near roadway coal, and preventing it, heat effect and heat conduct theory was used, so the method of inversing high temperature area of near roadway was presented. Based on coal wall temperature field, which was detected by thermal infrared imager, and airflow tempera- ture, the depth and the highest temperature of coal spontaneous spot was calculated. On the test sites, the depth of the highest temperature spot is not more than 0.09-0.15 m,and the temperature is below 70 ℃. And the pointed measurements which cause CO content decrease from 100 ×10-6 -160 ×10-6 to 10xl0-6 were used. Therefore,the method of inversing high temperature with infrared thermal imaging can be used to detect the high temperature spot of coal spon- taneous near roadway.

关 键 词：反演 高温探测 红外热成像 煤炭自燃 

分 类 号：TD752[矿业工程—矿井通风与安全]