A experiment study on the weakening effect in sandstone roof at a submerged coal mine

A experiment study on the weakening effect in sandstone roof at a submerged coal mine | 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 A experiment study on the weakening effect in sandstone roof at a submerged coal mine Yongle Liu, Zhongcheng Qin, Feng Zhang, Nan Liu, Bin Cao This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-6243342/v1 This work is licensed under a CC BY 4.0 License Status: Published Journal Publication published 16 Feb, 2026 Read the published version in Geomechanics and Geophysics for Geo-Energy and Geo-Resources → Version 1 posted 8 You are reading this latest preprint version Abstract The mechanical properties of the surrounding rock at the island working face have significantly altered due to extended exposure to high-salinity mine water, raising concerns over the safety of mining operations. This research seeks to conduct a thorough analysis of the mechanical properties of water-saturated roof rock in deep underground mining circumstances, with particular emphasis on sandstone samples typically found in these settings. A series of dynamic loading tests are undertaken on sandstone specimens with differing water contents to examine the effect of high-salinity water on rock strength. These tests replicate the circumstances encountered by the rock during mining operations and facilitate the assessment of the rock material's degradation behavior while in contact with saltwater. Through systematic analysis of the test findings, accounting for fluctuations in water saturation levels and the corresponding stress-strain responses, we may extract essential insights about the mechanical properties of the roof rock. The research underscores the significance of comprehending these mechanical properties to anticipate problems in mining. Subsequent to the testing phase, a comprehensive evaluation of the mechanical properties of the roof rock is conducted, resulting in the development of a damage constitutive model specifically designed for the engineering rock mass. This model integrates the observed weakening events, offering a more precise depiction of rock behavior under saltwater conditions, thereby improving our capacity to plan safer and more efficient underground mining operations in analogous high-salinity situations. saturated rock weakening SHPB damage model Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Published Journal Publication published 16 Feb, 2026 Read the published version in Geomechanics and Geophysics for Geo-Energy and Geo-Resources → Version 1 posted Editorial decision: Revision requested 03 May, 2025 Reviews received at journal 03 May, 2025 Reviews received at journal 02 May, 2025 Reviewers agreed at journal 24 Apr, 2025 Reviewers agreed at journal 24 Apr, 2025 Reviewers invited by journal 24 Apr, 2025 Submission checks completed at journal 24 Apr, 2025 First submitted to journal 10 Apr, 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. We do this by developing innovative software and high quality services for the global research community. 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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-6243342","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":448727127,"identity":"136550b2-dd66-4823-a882-ffa40a21c892","order_by":0,"name":"Yongle 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