Mining Depth Assessment for Tailings Considering Existing Open-Pit Slope Stability

Mining Depth Assessment for Tailings Considering Existing Open-Pit Slope Stability | 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 Mining Depth Assessment for Tailings Considering Existing Open-Pit Slope Stability Haiyu Ji, Chong Li, Xinfeng Yang, Yanchang Li, Shaodong Li, Shuzhao Feng This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7562714/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 recovery and utilization of tailings can reduce safety risks in open-pit mines while improving resource efficiency. This study develops a stability model for tailings recovery based on current slope and ore pillar conditions, incorporating mechanical parameters of tailings and waste rock from laboratory tests. Results indicate that complete extraction of Tailings Ore Body No. 1 in Section 1 caused no landslides, whereas excavation to 35 m in Section 2 triggered large-scale sliding on the southern slope. In Sections 3–7, northern waste rock slopes experienced varying degrees of failure after full extraction. To ensure stability, Section 2 should adopt a stepped scheme: after mining 15 m at a 20° slope angle, excavate an additional 10 m, reserve a 10 m bench, and repeat to the ore body bottom. This approach prevents southern slope failure while stabilizing the system. For northern slopes, applying a 35° slope angle effectively eliminated sliding across all profiles. Physical sciences/Engineering Earth and environmental sciences/Environmental sciences Earth and environmental sciences/Natural hazards Earth and environmental sciences/Solid earth sciences Open-pit mining Tailings recovery Slope stability Shear strength Numerical simulation 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-7562714","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":524853969,"identity":"2509c48c-9761-4b7a-a707-9b465e6c08df","order_by":0,"name":"Haiyu Ji","email":"","orcid":"","institution":"Central South University","correspondingAuthor":false,"prefix":"","firstName":"Haiyu","middleName":"","lastName":"Ji","suffix":""},{"id":524853970,"identity":"13a4b109-c782-4e73-a25b-5ac7d91c719e","order_by":1,"name":"Chong 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simulation","lastPublishedDoi":"10.21203/rs.3.rs-7562714/v1","lastPublishedDoiUrl":"https://doi.org/10.21203/rs.3.rs-7562714/v1","license":{"name":"CC BY 4.0","url":"https://creativecommons.org/licenses/by/4.0/"},"manuscriptAbstract":"\u003cp\u003eThe recovery and utilization of tailings can reduce safety risks in open-pit mines while improving resource efficiency. This study develops a stability model for tailings recovery based on current slope and ore pillar conditions, incorporating mechanical parameters of tailings and waste rock from laboratory tests. Results indicate that complete extraction of Tailings Ore Body No. 1 in Section 1 caused no landslides, whereas excavation to 35 m in Section 2 triggered large-scale sliding on the southern slope. In Sections 3\u0026ndash;7, northern waste rock slopes experienced varying degrees of failure after full extraction. To ensure stability, Section 2 should adopt a stepped scheme: after mining 15 m at a 20\u0026deg; slope angle, excavate an additional 10 m, reserve a 10 m bench, and repeat to the ore body bottom. This approach prevents southern slope failure while stabilizing the system. For northern slopes, applying a 35\u0026deg; slope angle effectively eliminated sliding across all profiles.\u003c/p\u003e","manuscriptTitle":"Mining Depth Assessment for Tailings Considering Existing Open-Pit Slope Stability","msid":"","msnumber":"","nonDraftVersions":[{"code":1,"date":"2025-10-06 20:59:16","doi":"10.21203/rs.3.rs-7562714/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":"5edf56c3-de24-441a-b9f5-3faccb860472","owner":[],"postedDate":"October 6th, 2025","published":true,"recentEditorialEvents":[],"rejectedJournal":[],"revision":"","amendment":"","status":"posted","subjectAreas":[{"id":55783898,"name":"Physical sciences/Engineering"},{"id":55783899,"name":"Earth and environmental sciences/Environmental sciences"},{"id":55783900,"name":"Earth and environmental sciences/Natural hazards"},{"id":55783901,"name":"Earth and environmental sciences/Solid earth sciences"}],"tags":[],"updatedAt":"2025-12-11T07:13:29+00:00","versionOfRecord":[],"versionCreatedAt":"2025-10-06 20:59:16","video":"","vorDoi":"","vorDoiUrl":"","workflowStages":[]},"version":"v1","identity":"rs-7562714","journalConfig":"researchsquare"},"__N_SSP":true},"page":"/article/[identity]/[[...version]]","query":{"redirect":"/article/rs-7562714","identity":"rs-7562714","version":["v1"]},"buildId":"8U1c8b4HqxoKbykW_rLl7","isFallback":false,"isExperimentalCompile":false,"dynamicIds":[84888],"gssp":true,"scriptLoader":[]}