基于双源复合声波的煤温感知技术展望  

Perspectives on a new technology for coal temperature sensing based on dual-source composite acoustic waves

作　　者：郭军 昝若怡[1,2] 文虎 王凯旋 金永飞[1,2,3] GUO Jun;ZAN Ruoyi;WEN Hu;WANG Kaixuan;JIN Yongfei(School of Safety Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China;Key Laboratory of Western Mine Mining and Disaster Prevention and Control,Ministry of Education,Xi'an 710054,China;National Mine Emergency Rescue(Xi'an)Research Center,Xi'an 710054,China)

机构地区：[1]西安科技大学安全科学与工程学院,西安710054 [2]西部矿井开采及灾害防治教育部重点实验室,西安710054 [3]国家矿山应急救援(西安)研究中心,西安710054

出　　处：《科技导报》2023年第22期83-90,共8页Science & Technology Review

基　　金：国家自然科学基金青年项目(52004209);国家自然科学基金项目(52174198,51974240)。

摘　　要：煤矿采空区复杂环境受限空间煤温的快速精准量化识别是世界性难题。针对现有煤火探测技术存在的局限,归纳了煤火探测技术的研究现状,并指出目前较为主流的采空区松散煤体隐蔽高温点测量方式可分为接触式测温与非接触式测温2类;梳理了声学测温技术的研究现状,分析了声波的温敏特性及声波的传播特性,总结了燃烧音的研究现状,分析了燃烧音是如何产生的、不同条件下的燃烧音频率,以及基于燃烧音识别的火灾探测技术;通过研究不同频率外加声波在升温松散煤体中的传播特性,掌握不同实验条件对外加声波与燃烧音“双源”复合声波传播规律的影响,提出了构建一个新型的煤温感知技术的构想。The rapid and accurate quantification of coal temperature in restricted spaces in complex coal mining areas has always been a worldwide problem.In view of the limitations of the existing coal fire detection technology,the current research status of coal fire detection technology is summarized,and it is pointed out that the current mainstream measurement methods of hidden high temperature points in loose coal bodies in mining areas can be divided into two categories:contact temperature measurement and non-contact temperature measurement;the current research status of acoustic temperature measurement technology is reviewed,the temperature-sensitive characteristics of acoustic waves and the propagation characteristics of acoustic waves are analyzed,the current research status of combustion sound is summarized,and combustion sound generation mechanism,combustion sound frequency under different conditions and the fire detection technology based on combustion sound identification are analyzed.The concept of a new coal temperature sensing technology is put forward by studying the propagation characteristics of applied sound waves with different frequencies in heating loose coal,grasping the influence of different experimental conditions on the propagation law of"dual source"composite sound waves of external acoustic wave and combustion sound.

关 键 词：隐蔽火源 探测技术 燃烧音 声学测温 复合声波 

分 类 号：TD752.2[矿业工程—矿井通风与安全]