Development and Application of Concrete-Filled Steel Tubular (CFST) Column Supporting High-stress Roof Strata in Large-span Mine Roadway

Development and Application of Concrete-Filled Steel Tubular (CFST) Column Supporting High-stress Roof Strata in Large-span Mine Roadway | 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 Development and Application of Concrete-Filled Steel Tubular (CFST) Column Supporting High-stress Roof Strata in Large-span Mine Roadway Wei Song, Han-Qiu WANG, Xue-Feng Liu, Heng-Jian QIU, Feng-Qi QIU, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-4322814/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 The stability of large-span roadway junctions is challenging to control solely through simple passive support and conventional combined support. Therefore, this paper incorporates a novel high strength concrete-filled steel tubular (CFST) column considering the steel tube structure and concrete materials designed to offer adequate support for controlling the rock strata in large-span mining roadway. Subsequently, the CFST column model was designed based on a large-span roadway in a certain mine. The results show that circular-section CFST columns are significantly superior to square-section CFST columns. As the steel tube's wall thickness increases, the structure's bearing capacity significantly increases. Considering both performance and cost, a new concrete material was studied that enhances bearing capacity by increasing its strength and the tightness of contact with steel tubes. Circular steel tubes with an outer diameter of 800 mm and a wall thickness of 24 mm were used as columns, filled with a new type of concrete material, for supporting the roof strata of the large-span mining roadway. After calculating the support forces, it was concluded that CFST columns could effectively bear the stress released by the strata, thereby reducing the displacement of the top rocks, with a notable support effect. Earth and environmental sciences/Biogeochemistry Earth and environmental sciences/Solid earth sciences Earth and environmental sciences/Space physics CFST column Parameters of steel tube Concrete materials Calculation of support forces 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-4322814","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":311284182,"identity":"543fd474-1a2f-4434-b22a-0fdf7014fcff","order_by":0,"name":"Wei Song","email":"","orcid":"","institution":"China Coal Energy Research Institute Co., Ltd","correspondingAuthor":false,"prefix":"","firstName":"Wei","middleName":"","lastName":"Song","suffix":""},{"id":311284183,"identity":"ab24d570-b4b2-45d7-9e72-ada1ce571182","order_by":1,"name":"Han-Qiu WANG","email":"data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAZAAAAAyAQMAAABI0h/eAAAABlBMVEX///8AAABVwtN+AAAACXBIWXMAAA7EAAAOxAGVKw4bAAAA1ElEQVRIiWNgGAWjYDACCQbmBx8MJHj4GRgbiNbCZjijwkZGsoEELQzSPGfSbAwOEOsug9vNGwx42w7zGN9IbnvAUGbNwN/enYBfy51jBQ8kgVrMbiS2GzCcS2eQOHN2A14tZjdyDAwMQVrOHGyTYGw7zGAgkUtYi0QiyGE9JGk5cCaNx4C9kUgt9jfSygwbKmx4JI43thsknEvnIegXyRnJmx//MZCw529mf/bgQ5m1HH97L34tQGAAY7AxJLAx8xBSjqaFgY2ZGB2jYBSMglEwwgAA2UJIXzeC4EIAAAAASUVORK5CYII=","orcid":"","institution":"China Coal Energy Research Institute Co., Ltd","correspondingAuthor":true,"prefix":"","firstName":"Han-Qiu","middleName":"","lastName":"WANG","suffix":""},{"id":311284184,"identity":"62450ce6-9138-44d2-9a62-035d6b28415b","order_by":2,"name":"Xue-Feng Liu","email":"","orcid":"","institution":"Shandong Agricultural University","correspondingAuthor":false,"prefix":"","firstName":"Xue-Feng","middleName":"","lastName":"Liu","suffix":""},{"id":311284185,"identity":"41fa29f9-0829-471a-8cad-95f9c1dce7ea","order_by":3,"name":"Heng-Jian QIU","email":"","orcid":"","institution":"China Coal Energy Research Institute Co., Ltd","correspondingAuthor":false,"prefix":"","firstName":"Heng-Jian","middleName":"","lastName":"QIU","suffix":""},{"id":311284186,"identity":"18523422-1d5d-4c48-a9d6-969d4e40a9bd","order_by":4,"name":"Feng-Qi QIU","email":"","orcid":"","institution":"China Coal Energy Research Institute Co., Ltd","correspondingAuthor":false,"prefix":"","firstName":"Feng-Qi","middleName":"","lastName":"QIU","suffix":""},{"id":311284187,"identity":"02cea51d-acd4-4b5f-9f58-197f3f17c299","order_by":5,"name":"Feng-Tian SHENG","email":"","orcid":"","institution":"China Coal Energy Research Institute Co., Ltd","correspondingAuthor":false,"prefix":"","firstName":"Feng-Tian","middleName":"","lastName":"SHENG","suffix":""}],"badges":[],"createdAt":"2024-04-25 08:47:04","currentVersionCode":1,"declarations":"","doi":"10.21203/rs.3.rs-4322814/v1","doiUrl":"https://doi.org/10.21203/rs.3.rs-4322814/v1","draftVersion":[],"editorialEvents":[],"editorialNote":"","failedWorkflow":false,"files":[{"id":89645619,"identity":"b01f4727-5b65-4241-b942-2dd734f57045","added_by":"auto","created_at":"2025-08-22 08:53:36","extension":"pdf","order_by":1,"title":"","display":"","copyAsset":false,"role":"manuscript-pdf","size":1009510,"visible":true,"origin":"","legend":"","description":"","filename":"Manuscript.pdf","url":"https://assets-eu.researchsquare.com/files/rs-4322814/v1_covered_5e41b7e2-4ab0-4194-ae71-c65dfe7cdaed.pdf"}],"financialInterests":"No competing interests reported.","formattedTitle":"Development and Application of Concrete-Filled Steel Tubular (CFST) Column Supporting High-stress Roof Strata in Large-span Mine Roadway","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":"CFST column, Parameters of steel tube, Concrete materials, Calculation of support forces","lastPublishedDoi":"10.21203/rs.3.rs-4322814/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-4322814/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThe stability of large-span roadway junctions is challenging to control solely through simple passive support and conventional combined support. Therefore, this paper incorporates a novel high strength concrete-filled steel tubular (CFST) column considering the steel tube structure and concrete materials designed to offer adequate support for controlling the rock strata in large-span mining roadway. Subsequently, the CFST column model was designed based on a large-span roadway in a certain mine. The results show that circular-section CFST columns are significantly superior to square-section CFST columns. As the steel tube's wall thickness increases, the structure's bearing capacity significantly increases. Considering both performance and cost, a new concrete material was studied that enhances bearing capacity by increasing its strength and the tightness of contact with steel tubes. Circular steel tubes with an outer diameter of 800 mm and a wall thickness of 24 mm were used as columns, filled with a new type of concrete material, for supporting the roof strata of the large-span mining roadway. 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