Research and application of bearing characteristics of combined support roof cutting in gob-side entry retaining

Research and application of bearing characteristics of combined support roof cutting in gob-side entry retaining | 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 and application of bearing characteristics of combined support roof cutting in gob-side entry retaining Xiaoyu Wu, Xiaowei Wu, Nan Zhang This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4818523/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract In fully-mechanized longwall mining, gob-side entry retaining is a no-coal-pillar mining technology, which can increase the recovery of coal pillar resources, reduce the amount and cost of roadway excavation. However, the surrounding rock of the retained roadway produces large deformation due to the turning and sinking movement of the roof, and the stress transfer from the overlying rock layer can be effectively reduced by cutting off the immediate roof and the main roof.This paper introduces the formation and control mechanism of cutting roof along the gob-side entry retaining, and mainly investigates the synergistic bearing characteristics of the roof-cutting support and gangue roadside support.The results of engineering practice show that: cutting off of thick roof along the gob-side entry retaining is feasible, fully meet the site production requirements. In the process of cutting roof, the gangue collapses and swells to form gangue roadside support. The gangue roadside support and the roof-cutting support beside the roadway carries the roof pressure, forming the cooperative bearing structure. In this way, the damage rate of the roof-cutting support is low, the deformation of the roadway is small, and the control effect is remarkable. Physical sciences/Energy science and technology Physical sciences/Engineering Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Posted Version 1 posted 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-4818523","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":348602547,"identity":"423a3061-75f9-4326-a56f-630f9d105ea8","order_by":0,"name":"Xiaoyu Wu","email":"","orcid":"","institution":"Shanxi Datong University","correspondingAuthor":false,"prefix":"","firstName":"Xiaoyu","middleName":"","lastName":"Wu","suffix":""},{"id":348602548,"identity":"cbc04215-2d39-4b01-a1a7-ff57145519cd","order_by":1,"name":"Xiaowei Wu","email":"","orcid":"","institution":"Yongdingzhuang Mine, DaTong Coal Mine Group","correspondingAuthor":false,"prefix":"","firstName":"Xiaowei","middleName":"","lastName":"Wu","suffix":""},{"id":348602549,"identity":"1c187b25-b8ba-453d-a417-22955e951d69","order_by":2,"name":"Nan Zhang","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAAuElEQVRIiWNgGAWjYFAC5gMMDGwMjA1ApgSRWtgSgNiAJC08BiRqkZ/d8/kzT9kf2Q0HmA/e5mGwyyOohXHO2W2SM84ZGM9sYEu25mFILiaohVkidxvDxzaDxH4GHjNpHoYDiQ2EtLBJ5Dz+kAjU0sbA/404LTwSOQwSUFvYiNMiIZFmBvSLsfHMZjZjyzkGyYS1yM9IfgwMMTnZDcebH954U2FHWAsCMIMIA+LVj4JRMApGwSjAAwBOUzVXp0LvgQAAAABJRU5ErkJggg==","orcid":"","institution":"Shanxi Datong University","correspondingAuthor":true,"prefix":"","firstName":"Nan","middleName":"","lastName":"Zhang","suffix":""}],"badges":[],"createdAt":"2024-07-29 02:11:31","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4818523/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4818523/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":65331235,"identity":"e6115e49-4152-40f1-92c6-ede2f7307b86","added_by":"auto","created_at":"2024-09-26 07:09:50","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1322288,"visible":true,"origin":"","legend":"","description":"","filename":"manuscriptnewversionofadocument1.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4818523/v1_covered_8052b0a2-fb94-46d4-8e5d-85ede4d91f18.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Research and application of bearing characteristics of combined support roof cutting in gob-side entry retaining","fulltext":[],"fulltextSource":"","fullText":"","funders":[],"hasAdminPriorityOnWorkflow":false,"hasManuscriptDocX":false,"hasOptedInToPreprint":true,"hasPassedJournalQc":"","hasAnyPriority":false,"hideJournal":true,"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":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true},"keywords":"","lastPublishedDoi":"10.21203/rs.3.rs-4818523/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4818523/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eIn fully-mechanized longwall mining, gob-side entry retaining is a no-coal-pillar mining technology, which can increase the recovery of coal pillar resources, reduce the amount and cost of roadway excavation. However, the surrounding rock of the retained roadway produces large deformation due to the turning and sinking movement of the roof, and the stress transfer from the overlying rock layer can be effectively reduced by cutting off the immediate roof and the main roof.This paper introduces the formation and control mechanism of cutting roof along the gob-side entry retaining, and mainly investigates the synergistic bearing characteristics of the roof-cutting support and gangue roadside support.The results of engineering practice show that: cutting off of thick roof along the gob-side entry retaining is feasible, fully meet the site production requirements. In the process of cutting roof, the gangue collapses and swells to form gangue roadside support. The gangue roadside support and the roof-cutting support beside the roadway carries the roof pressure, forming the cooperative bearing structure. In this way, the damage rate of the roof-cutting support is low, the deformation of the roadway is small, and the control effect is remarkable.\u003c/p\u003e","manuscriptTitle":"Research and application of bearing characteristics of combined support roof cutting in gob-side entry retaining","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2024-09-03 05:43:31","doi":"10.21203/rs.3.rs-4818523/v1","editorialEvents":[{"type":"communityComments","content":0}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"researchsquare","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":true,"externalIdentity":"","sideBox":"","snPcode":"","submissionUrl":"/submission","title":"Research Square","twitterHandle":"researchsquare","acdcEnabled":true,"dfaEnabled":false,"editorialSystem":"","reportingPortfolio":"","inReviewEnabled":false,"inReviewRevisionsEnabled":true}}],"origin":"","ownerIdentity":"49c05960-3c6c-469d-94a2-9d0f74ebb263","owner":[],"postedDate":"September 3rd, 2024","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[{"id":36988937,"name":"Physical sciences/Energy science and technology"},{"id":36988938,"name":"Physical sciences/Engineering"}],"tags":[],"updatedAt":"2024-09-26T07:09:17+00:00","versionOfRecord":[],"versionCreatedAt":"2024-09-03 05:43:31","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-4818523","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-4818523","identity":"rs-4818523","version":["v1"]},"buildId":"qtupq5eGEP_6zYnWcrvyt","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}