Research on the Movement Law of Overlying Strata and the Prevention and Control of Rockburst in the Fully Mechanized Top Coal Caving Face of Extra-Thick Coal Seams

Research on the Movement Law of Overlying Strata and the Prevention and Control of Rockburst in the Fully Mechanized Top Coal Caving Face of Extra-Thick Coal Seams | 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 Research on the Movement Law of Overlying Strata and the Prevention and Control of Rockburst in the Fully Mechanized Top Coal Caving Face of Extra-Thick Coal Seams Hai Rong, Longyue He, Yadi Wang, Xiangzhi Wei, Shilong Wei, Suihan Yang, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-5251194/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 08 Feb, 2025 Read the published version in Scientific Reports → Version 1 posted 22 You are reading this latest preprint version Abstract To investigate the movement law of overlying strata in the fully mechanized top-coal caving face of extra-thick coal seams and further achieve the effective prevention and control of rock burst. Taking the 12240 working face of Gengcun Coal Mine as the engineering background, initially, the calculation formula for the collaborative deformation load of hard rock strata and the formula for the instability scale of hard rock strata are employed to precisely ascertain the position and instability scale of the key strata. Subsequently, a UDEC calculation model is established to comprehensively investigate the instability characteristics of the overlying hard rock strata. Simultaneously, a meticulous analysis of the working resistance of the on-site supports is carried out to validate the theoretical computations. Eventually, in light of the research findings, a rational determination of the cutting scale is made so as to offer a scientific foundation and efficacious guidance for the execution of roof pre-splitting blasting operations. The research results show that within 50 m above the 12240 working face, there is one low-position hard strata and three medium-position hard strata. Under the influence of mining, the displacement field of the overlying hard strata is symmetrically distributed with respect to the central axis of the goaf. The stress rise areas on both sides of the goaf present a “hyperbolic” distribution, and the stress of the goaf roof and floor is released, showing an “elliptical parabolic belt” distribution. The periodic instability occurred about 8 m after the initial instability of the low-level hard rock layer, and the periodic instability occurred about 20 m after the initial instability of the middle hard rock layer 1. The goaf of the 12220 working face in the north of the working face is a crucial reason for the support resistance of the upper part of the 12240 working face being greater than that of the middle part and the middle part being greater than that of the lower part. When the working face advances 20–30 m, a distinct pressure accumulation area emerges in the middle of the working face and is regularly distributed as the working face advances. The monitoring results indicate that microseismic events are concentrated in the basic roof and medium-position strata 1, and energy events of 10 3 J are prone to occur. The basic roof and medium-position strata 1 are the key points for rock burst prevention of the working face. A roof cutting scale of no more than 10 m for the low-position hard strata can effectively reduce the rock burst risk. The research results provide theoretical support for roof pre-splitting and rock burst prevention of the 12240 working face in Gengcun Coal Mine and can offer guidance for the prediction and prevention and control of rock burst risk in mines and working faces under similar conditions. Physical sciences/Energy science and technology/Fossil fuels/Coal Earth and environmental sciences/Solid earth sciences Earth and environmental sciences/Solid earth sciences/Petrology extra-thick coal seam overburden movement hard rock stratum rockburst microseismic Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 08 Feb, 2025 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Revision requested 19 Nov, 2024 Reviews received at journal 16 Nov, 2024 Reviews received at journal 15 Nov, 2024 Reviews received at journal 13 Nov, 2024 Reviews received at journal 13 Nov, 2024 Reviewers agreed at journal 13 Nov, 2024 Reviewers agreed at journal 08 Nov, 2024 Reviews received at journal 07 Nov, 2024 Reviewers agreed at journal 07 Nov, 2024 Reviewers agreed at journal 07 Nov, 2024 Reviewers agreed at journal 06 Nov, 2024 Reviewers agreed at journal 06 Nov, 2024 Reviews received at journal 30 Oct, 2024 Reviews received at journal 29 Oct, 2024 Reviewers agreed at journal 29 Oct, 2024 Reviewers agreed at journal 28 Oct, 2024 Reviewers agreed at journal 28 Oct, 2024 Reviewers invited by journal 28 Oct, 2024 Editor assigned by journal 28 Oct, 2024 Editor invited by journal 28 Oct, 2024 Submission checks completed at journal 25 Oct, 2024 First submitted to journal 12 Oct, 2024 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. We do this by developing innovative software and high quality services for the global research community. Our growing team is made up of researchers and industry professionals working together to solve the most critical problems facing scientific publishing. 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-5251194","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":379994519,"identity":"07755fba-1068-4261-b42d-06947763ba37","order_by":0,"name":"Hai Rong","email":"","orcid":"","institution":"Liaoning Technical University","correspondingAuthor":false,"prefix":"","firstName":"Hai","middleName":"","lastName":"Rong","suffix":""},{"id":379994520,"identity":"e74a314f-11b5-4ca8-a7f1-19df9019a6fb","order_by":1,"name":"Longyue He","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAw0lEQVRIiWNgGAWjYBACfvb2ww8SKmzq+dkbiNQi2XMmzeDDmbQEyZ4DRGoxuOFgIDmz7XCCwY0EYm2ZwZBgzMN2OE9y5uONNxhqbKIJauGXbjzwmIcnvZhfOq3YguFYWm4DQVvmHADaImHNOHN2jpkEY8NhwlqAXjCQ5jFgZtxw8wwJWiRnJDgnbrjBQ6QWSCAfSDOW7AH6JYEYv4CjMvGfjRw/++GNNz7U2BDWguJIiQRSlEO0kKpjFIyCUTAKRgYAAAuaQ+yHmAqhAAAAAElFTkSuQmCC","orcid":"","institution":"Liaoning Technical University","correspondingAuthor":true,"prefix":"","firstName":"Longyue","middleName":"","lastName":"He","suffix":""},{"id":379994521,"identity":"4d1a3012-8f60-4acf-8e3f-4a2b1f48c39a","order_by":2,"name":"Yadi Wang","email":"","orcid":"","institution":"Graduate School of Liaoning Technical University","correspondingAuthor":false,"prefix":"","firstName":"Yadi","middleName":"","lastName":"Wang","suffix":""},{"id":379994522,"identity":"a39de7c2-1b1a-4a58-9400-bfaf4419c1cc","order_by":3,"name":"Xiangzhi Wei","email":"","orcid":"","institution":"Gengcun Coal Mine, Dayou Coal Industry Group","correspondingAuthor":false,"prefix":"","firstName":"Xiangzhi","middleName":"","lastName":"Wei","suffix":""},{"id":379994523,"identity":"01d58772-0614-4f59-9fc4-9a9eb811f36b","order_by":4,"name":"Shilong Wei","email":"","orcid":"","institution":"Liaoning Technical University","correspondingAuthor":false,"prefix":"","firstName":"Shilong","middleName":"","lastName":"Wei","suffix":""},{"id":379994526,"identity":"fe177ca6-7d73-49dd-ade1-92e44dc6a127","order_by":5,"name":"Suihan Yang","email":"","orcid":"","institution":"Gengcun Coal Mine, Dayou Coal Industry Group","correspondingAuthor":false,"prefix":"","firstName":"Suihan","middleName":"","lastName":"Yang","suffix":""},{"id":379994528,"identity":"aa8702a7-82ab-4766-8375-5621def82a51","order_by":6,"name":"Jincheng Li","email":"","orcid":"","institution":"Liaoning Technical University","correspondingAuthor":false,"prefix":"","firstName":"Jincheng","middleName":"","lastName":"Li","suffix":""},{"id":379994530,"identity":"54206f95-722e-4a0d-a079-4dfb16321d85","order_by":7,"name":"Linlin Chen","email":"","orcid":"","institution":"Gengcun Coal Mine, Dayou Coal Industry Group","correspondingAuthor":false,"prefix":"","firstName":"Linlin","middleName":"","lastName":"Chen","suffix":""}],"badges":[],"createdAt":"2024-10-12 11:23:12","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-5251194/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-5251194/v1","draftVersion":[],"editorialEvents":[{"content":"https://doi.org/10.1038/s41598-025-89133-7","type":"published","date":"2025-02-08T15:57:08+00:00"}],"editorialNote":"","failedWorkflow":false,"files":[{"id":75930527,"identity":"1dde850f-264e-4ce1-9fda-1770eae32a94","added_by":"auto","created_at":"2025-02-10 16:12:53","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1169797,"visible":true,"origin":"","legend":"","description":"","filename":"manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-5251194/v1_covered_7c587e38-e301-4c1f-b715-a42858d23af7.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Research on the Movement Law of Overlying Strata and the Prevention and Control of Rockburst in the Fully Mechanized Top Coal Caving Face of Extra-Thick Coal Seams","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":false,"highlight":"","institution":"","isAcceptedByJournal":true,"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":"extra-thick coal seam, overburden movement, hard rock stratum, rockburst, microseismic","lastPublishedDoi":"10.21203/rs.3.rs-5251194/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-5251194/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eTo investigate the movement law of overlying strata in the fully mechanized top-coal caving face of extra-thick coal seams and further achieve the effective prevention and control of rock burst. Taking the 12240 working face of Gengcun Coal Mine as the engineering background, initially, the calculation formula for the collaborative deformation load of hard rock strata and the formula for the instability scale of hard rock strata are employed to precisely ascertain the position and instability scale of the key strata. Subsequently, a UDEC calculation model is established to comprehensively investigate the instability characteristics of the overlying hard rock strata. Simultaneously, a meticulous analysis of the working resistance of the on-site supports is carried out to validate the theoretical computations. Eventually, in light of the research findings, a rational determination of the cutting scale is made so as to offer a scientific foundation and efficacious guidance for the execution of roof pre-splitting blasting operations. The research results show that within 50 m above the 12240 working face, there is one low-position hard strata and three medium-position hard strata. Under the influence of mining, the displacement field of the overlying hard strata is symmetrically distributed with respect to the central axis of the goaf. The stress rise areas on both sides of the goaf present a \u0026ldquo;hyperbolic\u0026rdquo; distribution, and the stress of the goaf roof and floor is released, showing an \u0026ldquo;elliptical parabolic belt\u0026rdquo; distribution. The periodic instability occurred about 8 m after the initial instability of the low-level hard rock layer, and the periodic instability occurred about 20 m after the initial instability of the middle hard rock layer 1. The goaf of the 12220 working face in the north of the working face is a crucial reason for the support resistance of the upper part of the 12240 working face being greater than that of the middle part and the middle part being greater than that of the lower part. When the working face advances 20\u0026ndash;30 m, a distinct pressure accumulation area emerges in the middle of the working face and is regularly distributed as the working face advances. The monitoring results indicate that microseismic events are concentrated in the basic roof and medium-position strata 1, and energy events of 10\u003csup\u003e3\u003c/sup\u003e J are prone to occur. The basic roof and medium-position strata 1 are the key points for rock burst prevention of the working face. A roof cutting scale of no more than 10 m for the low-position hard strata can effectively reduce the rock burst risk. The research results provide theoretical support for roof pre-splitting and rock burst prevention of the 12240 working face in Gengcun Coal Mine and can offer guidance for the prediction and prevention and control of rock burst risk in mines and working faces under similar conditions.\u003c/p\u003e","manuscriptTitle":"Research on the Movement Law of Overlying Strata and the Prevention and Control of Rockburst in the Fully Mechanized Top Coal Caving Face of Extra-Thick Coal Seams","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-12-10 04:12:49","doi":"10.21203/rs.3.rs-5251194/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Revision requested","date":"2024-11-19T12:32:29+00:00","index":"","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-11-16T16:09:12+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-11-15T14:30:00+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-11-13T07:06:03+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-11-13T06:22:48+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"68910047501471641107932084393527211490","date":"2024-11-13T06:20:21+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"218317162478461234367244316778852136755","date":"2024-11-08T09:49:22+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-11-08T01:45:40+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"137363406228021367408449592961851686390","date":"2024-11-07T23:20:28+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"202519589244041359321086830156086365127","date":"2024-11-07T10:56:56+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"30438864819587845825711763109891893655","date":"2024-11-06T16:18:43+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"334766349425219237520236929821953432074","date":"2024-11-06T10:32:56+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-10-31T01:18:28+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2024-10-29T10:11:43+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"263113357055134095052235020356901023860","date":"2024-10-29T04:33:00+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"96617227552512591743747328208567511707","date":"2024-10-29T02:56:47+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"337569532167801370276371222169057427584","date":"2024-10-29T02:26:47+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2024-10-29T02:24:06+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2024-10-29T02:21:12+00:00","index":"","fulltext":""},{"type":"editorInvited","content":"","date":"2024-10-29T02:07:38+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2024-10-25T09:19:35+00:00","index":"","fulltext":""},{"type":"submitted","content":"Scientific Reports","date":"2024-10-12T11:07:39+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":"80032f2a-8221-4923-a081-2100e0d27b92","owner":[],"postedDate":"December 10th, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"published-in-journal","subjectAreas":[{"id":40466709,"name":"Physical sciences/Energy science and technology/Fossil fuels/Coal"},{"id":40466710,"name":"Earth and environmental sciences/Solid earth sciences"},{"id":40466711,"name":"Earth and environmental sciences/Solid earth sciences/Petrology"}],"tags":[],"updatedAt":"2025-02-10T16:05:26+00:00","versionOfRecord":{"articleIdentity":"rs-5251194","link":"https://doi.org/10.1038/s41598-025-89133-7","journal":{"identity":"scientific-reports","isVorOnly":false,"title":"Scientific Reports"},"publishedOn":"2025-02-08 15:57:08","publishedOnDateReadable":"February 8th, 2025"},"versionCreatedAt":"2024-12-10 04:12:49","video":"","vorDoi":"10.1038/s41598-025-89133-7","vorDoiUrl":"https://doi.org/10.1038/s41598-025-89133-7","workflowStages":[]},"version":"v1","identity":"rs-5251194","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-5251194","identity":"rs-5251194","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}