Study on acoustic emission and infrared radiation characteristics of coal combination with different tectonic coal thickness

Study on acoustic emission and infrared radiation characteristics of coal combination with different tectonic coal thickness | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Article Study on acoustic emission and infrared radiation characteristics of coal combination with different tectonic coal thickness Weidong LU, Pengxiang ZHAO, Huan JIN, Zhifeng CHEN, Quan JIN This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9063970/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 13 You are reading this latest preprint version Abstract In order to study the characteristics of acoustic emission and infrared radiation and the information of failure precursors, uniaxial compression tests were carried out on coal combinations with different tectonic coal thickness. The test results show that in 4 typical stages of deformation and failure of composite specimens, the composite specimens in each stage have different characteristics of acoustic emission and infrared radiation, and the laws of acoustic emission and infrared radiation under different tectonic coal thickness are basically the same. The decreasing trend of infrared radiation temperature in the linear elastic stage is slightly slower than that in the initial compaction stage. In the plastic stage, the coal and rock samples continue to rise, and the lowest temperature is in the elastic stage. With the increase of tectonic coal thickness, the AE count and AE energy both decrease. The lower the intensity of AE activity near the peak point, the maximum energy released at the peak point shows a decreasing trend. The infrared radiation temperature showed a typical stable upturn pattern. The temperature changes abruptly when the composite fails, and the maximum infrared radiation temperature decreases with the increase of coal thickness. The range of acoustic emission peak count and maximum infrared radiation temperature of tectonic coal assemblages is 3.24×104 ~ 1.99×104, 5.9 ~ 1.1℃, respectively. The acoustic emission test results of coal samples with different tectonic thickness show that the fluctuation of critical precursory point is 77.0% ~ 99.6%, and the standard deviation of infrared critical precursory point is 0.74 ~ 0.92. Physical sciences/Energy science and technology Earth and environmental sciences/Solid earth sciences Acoustic emission Infrared radiation Uniaxial compression Different tectonic coal thickness combination Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Editorial decision: Revision requested 13 Apr, 2026 Reviews received at journal 09 Apr, 2026 Reviews received at journal 06 Apr, 2026 Reviews received at journal 29 Mar, 2026 Reviewers agreed at journal 27 Mar, 2026 Reviewers agreed at journal 26 Mar, 2026 Reviewers agreed at journal 25 Mar, 2026 Reviewers agreed at journal 25 Mar, 2026 Reviewers invited by journal 24 Mar, 2026 Editor assigned by journal 19 Mar, 2026 Editor invited by journal 19 Mar, 2026 Submission checks completed at journal 14 Mar, 2026 First submitted to journal 14 Mar, 2026 You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-9063970","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":611948934,"identity":"bdea93bc-76f6-4558-82ce-3800976809cd","order_by":0,"name":"Weidong LU","email":"","orcid":"","institution":"新疆工程学院","correspondingAuthor":false,"prefix":"","firstName":"Weidong","middleName":"","lastName":"LU","suffix":""},{"id":611948935,"identity":"081e3564-986f-4a4e-a4d1-0567344180ec","order_by":1,"name":"Pengxiang ZHAO","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA2UlEQVRIiWNgGAWjYBACfvbmgw8kDGyY+eUfHyBOi2TPsWQDi4o0dsmGtATitBjcyFGTqDhzmN+gIceASJedOcMgcbMtTdqA4czHG28Y7OR0GwjoYGzvPWA4s83G2Jyxd7PlHIZkY7MDBLQw85xLSJZsS0u2bObdJs3DcCBxGyEtbBI5Bof/th2u33CM5xlxWngkcgwbJM4cZjY4w8NGnBYJnmPJDBIVacySM9iMLecYEOEX++PNx3+Ao1KC+eGNNxV2cgS1oFlJbNQgaSFVxygYBaNgFIwIAACI9UPdQf/fbAAAAABJRU5ErkJggg==","orcid":"","institution":"西安科技大学","correspondingAuthor":true,"prefix":"","firstName":"Pengxiang","middleName":"","lastName":"ZHAO","suffix":""},{"id":611948936,"identity":"3c288c7b-aad2-4e60-a7d6-9b5092b4a220","order_by":2,"name":"Huan JIN","email":"","orcid":"","institution":"新疆工程学院","correspondingAuthor":false,"prefix":"","firstName":"Huan","middleName":"","lastName":"JIN","suffix":""},{"id":611948937,"identity":"adfcd960-d153-4c04-b4e4-de6a77bab834","order_by":3,"name":"Zhifeng CHEN","email":"","orcid":"","institution":"新疆工程学院","correspondingAuthor":false,"prefix":"","firstName":"Zhifeng","middleName":"","lastName":"CHEN","suffix":""},{"id":611948938,"identity":"a1546167-832c-4075-b3ab-567d5aaae665","order_by":4,"name":"Quan JIN","email":"","orcid":"","institution":"西安科技大学","correspondingAuthor":false,"prefix":"","firstName":"Quan","middleName":"","lastName":"JIN","suffix":""}],"badges":[],"createdAt":"2026-03-08 11:53:59","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-9063970/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-9063970/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":105566572,"identity":"3e97b991-dfb4-4519-9f4e-e50a814970e8","added_by":"auto","created_at":"2026-03-27 12:56:43","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1284844,"visible":true,"origin":"","legend":"","description":"","filename":"Studyonacousticemissionandinfraredradiationcharacteristicsofcoalcombinationwithdifferenttectoniccoalthickness.pdf","url":"https://assets-eu.researchsquare.com/files/rs-9063970/v1_covered_a146a101-7e90-479e-b555-cf2e40c685b3.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Study on acoustic emission and infrared radiation characteristics of coal combination with different tectonic coal thickness","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":false,"isAuthorSuppliedPdf":true,"isDeskRejected":"","isHiddenFromSearch":false,"isInQc":false,"isInWorkflow":false,"isPdf":true,"isPdfUpToDate":true,"isWithdrawnOrRetracted":false,"journal":{"display":true,"email":"[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true},"keywords":"Acoustic emission, Infrared radiation, Uniaxial compression, Different tectonic coal thickness, combination","lastPublishedDoi":"10.21203/rs.3.rs-9063970/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-9063970/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"In order to study the characteristics of acoustic emission and infrared radiation and the information of failure precursors, uniaxial compression tests were carried out on coal combinations with different tectonic coal thickness. The test results show that in 4 typical stages of deformation and failure of composite specimens, the composite specimens in each stage have different characteristics of acoustic emission and infrared radiation, and the laws of acoustic emission and infrared radiation under different tectonic coal thickness are basically the same. The decreasing trend of infrared radiation temperature in the linear elastic stage is slightly slower than that in the initial compaction stage. In the plastic stage, the coal and rock samples continue to rise, and the lowest temperature is in the elastic stage. With the increase of tectonic coal thickness, the AE count and AE energy both decrease. The lower the intensity of AE activity near the peak point, the maximum energy released at the peak point shows a decreasing trend. The infrared radiation temperature showed a typical stable upturn pattern. The temperature changes abruptly when the composite fails, and the maximum infrared radiation temperature decreases with the increase of coal thickness. The range of acoustic emission peak count and maximum infrared radiation temperature of tectonic coal assemblages is 3.24×104 ~ 1.99×104, 5.9 ~ 1.1℃, respectively. The acoustic emission test results of coal samples with different tectonic thickness show that the fluctuation of critical precursory point is 77.0% ~ 99.6%, and the standard deviation of infrared critical precursory point is 0.74 ~ 0.92.","manuscriptTitle":"Study on acoustic emission and infrared radiation characteristics of coal combination with different tectonic coal thickness","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2026-03-26 08:14:30","doi":"10.21203/rs.3.rs-9063970/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Revision requested","date":"2026-04-13T08:24:04+00:00","index":"","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2026-04-09T07:32:48+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2026-04-07T03:41:09+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2026-03-30T02:35:08+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"241708198635209779632562781560675080381","date":"2026-03-27T06:45:37+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"145425102542037625898127585692004391527","date":"2026-03-26T13:27:27+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"15978969960724679570240138202444244698","date":"2026-03-26T03:27:37+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"20266047922129475339054730438981490247","date":"2026-03-25T10:49:14+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2026-03-25T02:32:47+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2026-03-19T13:10:31+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"","date":"2026-03-19T13:06:51+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2026-03-14T08:45:10+00:00","index":"","fulltext":""},{"type":"submitted","content":"Scientific Reports","date":"2026-03-14T08:40:07+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"scientific-reports","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"scirep","sideBox":"Learn more about [Scientific Reports](http://www.nature.com/srep/)","snPcode":"","submissionUrl":"","title":"Scientific Reports","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"stoa","reportingPortfolio":"Scientific Reports","inReviewEnabled":true,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"c758867f-750c-447a-90bc-58e9c7fbd13b","owner":[],"postedDate":"March 26th, 2026","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"under-review","subjectAreas":[{"id":65110739,"name":"Physical sciences/Energy science and technology"},{"id":65110740,"name":"Earth and environmental sciences/Solid earth sciences"}],"tags":[],"updatedAt":"2026-04-29T02:54:00+00:00","versionOfRecord":[],"versionCreatedAt":"2026-03-26 08:14:30","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-9063970","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-9063970","identity":"rs-9063970","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}