Research on surrounding rock control technology of roof cutting and pressure relieving for roadside packing in gob-side entry retaining of large mining height panel

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Abstract

Abstract This article takes the transportation channel of the 2507 working face as the engineering background to carry out the analysis of the surrounding rock failure mechanism of the roadside packing in gob-side entry retaining of large mining height panel, and summarizes three common forms of instability failure of the filling wall. Summarize the three common forms of instability and failure of narrow filling wall, and determine the method and idea of using a combination of “strengthened support + roof cutting pressure relief” to control the surrounding rock of gob-side entry retaining of roadside filling. In theory, the optimal range of roof cutting height and roof cutting angle was obtained, and an innovative introduction of deviatoric stress analysis index was made. Numerical simulation research was conducted on the distribution characteristics of deviatoric stress in the surrounding rock of the gob-side entry retaining under different roof cutting heights, roof cutting angles, and wall width conditions. The optimal parameters for roof cutting and pressure relief of the gob-side entry retaining of roadside filling in the high mining face were obtained. The on-site engineering practice shows that after adopting the joint control technology of “strengthening support + roof cutting pressure relief”, the displacement of the surrounding rock of the retained roadway, the force of the anchor cable, and the bearing capacity of the flexible formwork wall are all within the normal range, ensuring that the retained roadway can continue to be used by the next working face.
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Research on surrounding rock control technology of roof cutting and pressure relieving for roadside packing in gob-side entry retaining of large mining height panel | 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 surrounding rock control technology of roof cutting and pressure relieving for roadside packing in gob-side entry retaining of large mining height panel Weiyong Lu, Shengjun Li, Yaohui Sun, Tao Gao, Wansheng Mi, Xiaowu Zhang This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8503922/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 30 Jan, 2026 Read the published version in Scientific Reports → Version 1 posted 12 You are reading this latest preprint version Abstract This article takes the transportation channel of the 2507 working face as the engineering background to carry out the analysis of the surrounding rock failure mechanism of the roadside packing in gob-side entry retaining of large mining height panel, and summarizes three common forms of instability failure of the filling wall. Summarize the three common forms of instability and failure of narrow filling wall, and determine the method and idea of using a combination of “strengthened support + roof cutting pressure relief” to control the surrounding rock of gob-side entry retaining of roadside filling. In theory, the optimal range of roof cutting height and roof cutting angle was obtained, and an innovative introduction of deviatoric stress analysis index was made. Numerical simulation research was conducted on the distribution characteristics of deviatoric stress in the surrounding rock of the gob-side entry retaining under different roof cutting heights, roof cutting angles, and wall width conditions. The optimal parameters for roof cutting and pressure relief of the gob-side entry retaining of roadside filling in the high mining face were obtained. The on-site engineering practice shows that after adopting the joint control technology of “strengthening support + roof cutting pressure relief”, the displacement of the surrounding rock of the retained roadway, the force of the anchor cable, and the bearing capacity of the flexible formwork wall are all within the normal range, ensuring that the retained roadway can continue to be used by the next working face. Physical sciences/Energy science and technology Physical sciences/Engineering large mining height panel roadside filling gob-side entry retaining roof cutting and pressure relieving support and unloading collaboration Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 30 Jan, 2026 Read the published version in Scientific Reports → Version 1 posted Editorial decision: Revision requested 15 Jan, 2026 Reviews received at journal 12 Jan, 2026 Reviews received at journal 11 Jan, 2026 Reviews received at journal 10 Jan, 2026 Reviewers agreed at journal 08 Jan, 2026 Reviewers agreed at journal 08 Jan, 2026 Reviewers agreed at journal 08 Jan, 2026 Reviewers invited by journal 08 Jan, 2026 Editor assigned by journal 08 Jan, 2026 Editor invited by journal 08 Jan, 2026 Submission checks completed at journal 06 Jan, 2026 First submitted to journal 06 Jan, 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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roadside filling, gob-side entry retaining, roof cutting and pressure relieving, support and unloading collaboration","lastPublishedDoi":"10.21203/rs.3.rs-8503922/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-8503922/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThis article takes the transportation channel of the 2507 working face as the engineering background to carry out the analysis of the surrounding rock failure mechanism of the roadside packing in gob-side entry retaining of large mining height panel, and summarizes three common forms of instability failure of the filling wall. 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