Mechanical Behavior of the Lateral Gangue-Retaining Structure and Roof Cutting Regulation in Fully Gob-Side Entry Driving in a Steep Coal Seam

Mechanical Behavior of the Lateral Gangue-Retaining Structure and Roof Cutting Regulation in Fully Gob-Side Entry Driving in a Steep Coal Seam | 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 Research Article Mechanical Behavior of the Lateral Gangue-Retaining Structure and Roof Cutting Regulation in Fully Gob-Side Entry Driving in a Steep Coal Seam Meng Wang, Yu Han, Ningkang Meng, Yalong Xu, Zhen Wang, Ruifu Yuan, and 3 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8479177/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 02 Apr, 2026 Read the published version in Geomechanics and Geophysics for Geo-Energy and Geo-Resources → Version 1 posted 9 You are reading this latest preprint version Abstract Fully gob-side entry driving refers to the excavation of a roadway along the edge of the gob after the completion of mining in the adjacent panel. Since no coal pillar remains between the full gob-side entry side and the gob, the reliability of the gangue-retaining support is crucial and directly affects the control effectiveness and usable cross section of the roadway. In steep coal seam mining, the downward sliding of gob gangue influences the stress on the gangue-retaining support structure, which increases the difficulty of roadway maintenance. Focusing on the challenge of gangue retention in steep gob-side entries, a theoretical analysis method was adopted to establish a mechanical model of the gangue-retaining structure. The relationships between the required gangue-retaining force and factors such as the coal seam dip angle and roof cutting parameters were derived, revealing how the support force varies with geological conditions and mining parameters. The required gangue-retaining force is positively correlated with the coal seam dip angle and roof cutting height and negatively correlated with the roof cutting angle. Under steep mining conditions, the stress on the gangue-retaining structure can be effectively regulated by adjusting roof cutting parameters. Designing the gangue-retaining structure on the basis of the lateral thrust from the gangue after pressure relief by roof cutting can ensure close alignment with field engineering conditions. This conclusion was verified using numerical simulations. Finally, construction convenience was considered; a roof cutting angle of 10° and mine-supplied U36 steel (with a yield strength of approximately 400 MPa) were adopted for gangue retention under known conditions; and the applicable roof cutting height for fully gob-side entry driving in the Baogushan Mine was determined as 10 m through the use of the back-calculation method. An industrial field trial was conducted that combined conventional bolt–mesh–cable supports with unit supports for active and passive support purposes. The rib deformation was approximately 320 mm, the roof-to-floor convergence reached approximately 380 mm, the maximum roof separation was less than 60 mm, and the residual roadway cross-sectional ratio was 82%. No significant large deformation or overall inward movement occurred of the gangue-retaining structure on the side of the gob, which satisfies mine production requirements. On the basis of limit equilibrium theory, a method for calculating the required gangue-retaining support force in steep gob-side entry was developed. A synergistic control concept involving gangue retention and roof cutting was proposed. Controlled roof cutting was employed to precisely regulate the gangue-retaining force and prevent instability of the rib on the exposed side due to insufficient support capacity. A new perspective on the engineering application of roof cutting and pressure relief technology was offered for fully gob-side entry driving in steep coal seams. Steep Coal Seam Fully Gob-Side Entry Driving Roof Cutting and Roadway Protection Load on the Gangue Retaining Structure Surrounding Rock Control Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 02 Apr, 2026 Read the published version in Geomechanics and Geophysics for Geo-Energy and Geo-Resources → Version 1 posted Editorial decision: Revision requested 20 Jan, 2026 Reviews received at journal 15 Jan, 2026 Reviews received at journal 09 Jan, 2026 Reviewers agreed at journal 08 Jan, 2026 Reviewers agreed at journal 07 Jan, 2026 Reviewers invited by journal 06 Jan, 2026 Editor assigned by journal 06 Jan, 2026 Submission checks completed at journal 04 Jan, 2026 First submitted to journal 30 Dec, 2025 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-8479177","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":572162824,"identity":"4cb64b6c-f8a1-4789-be52-c0ffaae493c9","order_by":0,"name":"Meng Wang","email":"","orcid":"","institution":"Henan Polytechnic University","correspondingAuthor":false,"prefix":"","firstName":"Meng","middleName":"","lastName":"Wang","suffix":""},{"id":572162826,"identity":"e0c98e7b-d2fc-4779-b055-9f4f718fe495","order_by":1,"name":"Yu Han","email":"","orcid":"","institution":"Henan Polytechnic 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Since no coal pillar remains between the full gob-side entry side and the gob, the reliability of the gangue-retaining support is crucial and directly affects the control effectiveness and usable cross section of the roadway. In steep coal seam mining, the downward sliding of gob gangue influences the stress on the gangue-retaining support structure, which increases the difficulty of roadway maintenance. Focusing on the challenge of gangue retention in steep gob-side entries, a theoretical analysis method was adopted to establish a mechanical model of the gangue-retaining structure. The relationships between the required gangue-retaining force and factors such as the coal seam dip angle and roof cutting parameters were derived, revealing how the support force varies with geological conditions and mining parameters. The required gangue-retaining force is positively correlated with the coal seam dip angle and roof cutting height and negatively correlated with the roof cutting angle. Under steep mining conditions, the stress on the gangue-retaining structure can be effectively regulated by adjusting roof cutting parameters. Designing the gangue-retaining structure on the basis of the lateral thrust from the gangue after pressure relief by roof cutting can ensure close alignment with field engineering conditions. This conclusion was verified using numerical simulations. Finally, construction convenience was considered; a roof cutting angle of 10\u0026deg; and mine-supplied U36 steel (with a yield strength of approximately 400 MPa) were adopted for gangue retention under known conditions; and the applicable roof cutting height for fully gob-side entry driving in the Baogushan Mine was determined as 10 m through the use of the back-calculation method. An industrial field trial was conducted that combined conventional bolt\u0026ndash;mesh\u0026ndash;cable supports with unit supports for active and passive support purposes. The rib deformation was approximately 320 mm, the roof-to-floor convergence reached approximately 380 mm, the maximum roof separation was less than 60 mm, and the residual roadway cross-sectional ratio was 82%. No significant large deformation or overall inward movement occurred of the gangue-retaining structure on the side of the gob, which satisfies mine production requirements. On the basis of limit equilibrium theory, a method for calculating the required gangue-retaining support force in steep gob-side entry was developed. A synergistic control concept involving gangue retention and roof cutting was proposed. Controlled roof cutting was employed to precisely regulate the gangue-retaining force and prevent instability of the rib on the exposed side due to insufficient support capacity. A new perspective on the engineering application of roof cutting and pressure relief technology was offered for fully gob-side entry driving in steep coal seams.\u003c/p\u003e","manuscriptTitle":"Mechanical Behavior of the Lateral Gangue-Retaining Structure and Roof Cutting Regulation in Fully Gob-Side Entry Driving in a Steep Coal Seam","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2026-01-12 17:15:03","doi":"10.21203/rs.3.rs-8479177/v1","editorialEvents":[{"type":"communityComments","content":0},{"type":"decision","content":"Revision requested","date":"2026-01-20T19:04:55+00:00","index":"","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2026-01-15T13:57:18+00:00","index":"hide","fulltext":""},{"type":"editorInvitedReview","content":"","date":"2026-01-09T15:41:43+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"279482220086662214293188353755330865916","date":"2026-01-08T08:46:20+00:00","index":"hide","fulltext":""},{"type":"reviewerAgreed","content":"170558582651634309212669004534266344661","date":"2026-01-07T08:09:26+00:00","index":"hide","fulltext":""},{"type":"reviewersInvited","content":"","date":"2026-01-06T20:34:06+00:00","index":"","fulltext":""},{"type":"editorAssigned","content":"","date":"2026-01-06T20:32:19+00:00","index":"","fulltext":""},{"type":"checksComplete","content":"","date":"2026-01-05T03:03:16+00:00","index":"","fulltext":""},{"type":"submitted","content":"Geomechanics and Geophysics for Geo-Energy and Geo-Resources","date":"2025-12-30T08:22:36+00:00","index":"","fulltext":""}],"status":"published","journal":{"display":true,"email":"[email protected]","identity":"geomechanics-and-geophysics-for-geo-energy-and-geo-resources","isNatureJournal":false,"hasQc":true,"allowDirectSubmit":false,"externalIdentity":"gggg","sideBox":"Learn more about [Geomechanics and Geophysics for Geo-Energy and Geo-Resources](http://link.springer.com/journal/40948)","snPcode":"40948","submissionUrl":"https://submission.nature.com/new-submission/40948/3","title":"Geomechanics and Geophysics for Geo-Energy and Geo-Resources","twitterHandle":"","acdcEnabled":true,"dfaEnabled":true,"editorialSystem":"em","reportingPortfolio":"Springer Hybrid","inReviewEnabled":true,"inReviewRevisionsEnabled":false}}],"origin":"","ownerIdentity":"7ef14ce8-f1d7-4f3d-b514-445be963cea0","owner":[],"postedDate":"January 12th, 2026","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"published-in-journal","subjectAreas":[],"tags":[],"updatedAt":"2026-04-07T16:13:59+00:00","versionOfRecord":{"articleIdentity":"rs-8479177","link":"https://doi.org/10.1007/s40948-026-01140-8","journal":{"identity":"geomechanics-and-geophysics-for-geo-energy-and-geo-resources","isVorOnly":false,"title":"Geomechanics and Geophysics for Geo-Energy and Geo-Resources"},"publishedOn":"2026-04-02 15:58:59","publishedOnDateReadable":"April 2nd, 2026"},"versionCreatedAt":"2026-01-12 17:15:03","video":"","vorDoi":"10.1007/s40948-026-01140-8","vorDoiUrl":"https://doi.org/10.1007/s40948-026-01140-8","workflowStages":[]},"version":"v1","identity":"rs-8479177","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-8479177","identity":"rs-8479177","version":["v1"]},"buildId":"XKTyCvWXoU3ODBz1xrDgd","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}