Study on Triaxial Compression Tests and Energy Analysis of Jointed Rock Mass with Rough Structural Surfaces

Study on Triaxial Compression Tests and Energy Analysis of Jointed Rock Mass with Rough Structural Surfaces | 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 Study on Triaxial Compression Tests and Energy Analysis of Jointed Rock Mass with Rough Structural Surfaces chen chen, haoyu Dou, jian li, yueqian Cao, wenjing xia, chun wang, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-8698335/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted 16 You are reading this latest preprint version Abstract To clarify the way confining pressure and joint inclination affected the mechanical behavior of jointed rocks under triaxial conditions, the study engaged in conducting triaxial tests on jointed rocks with various joint inclinations, examining the effects of the two parameters from two perspectives: strength and deformation failure characteristics, and energy evolution characteristics. A damage coefficient based on elastic energy and dissipated energy was proposed for the quantitative explanation of the jointed rock stability. According to the study results, when the confining pressure is the same, the increase in joint inclination is accompanied by a "U-shaped" distribution of the strength and elastic modulus of the jointed specimens. Elevating the confining pressure can result in obviously enhanced strength and elastic modulus. The specimens have three types of failure modes: (1) global splitting failure, (2) shear failure along the joint surface, and (3) mixed failure, and the failure modes can be primarily controlled by joint inclination. The input energy ( U tcf ), elastic energy ( U ecf ), and dissipated energy ( U dcf ) of the specimens all show a decreasing-to-increasing trend along with the elevated joint inclination. The energy damage coefficient χ max is defined to qualitatively indicate the likelihood of failure in jointed specimens, which are classified into three levels based on their failure probability. Physical sciences/Engineering Physical sciences/Materials science Earth and environmental sciences/Solid earth sciences Triaxial Compression Test Joint Rock Deformation and Failure Energy Evolution Energy Damage Coefficient Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Review Version 1 posted Reviews received at journal 19 May, 2026 Reviewers agreed at journal 18 May, 2026 Reviewers agreed at journal 17 May, 2026 Reviews received at journal 15 Apr, 2026 Reviewers agreed at journal 10 Apr, 2026 Reviewers agreed at journal 07 Apr, 2026 Reviewers agreed at journal 07 Apr, 2026 Reviews received at journal 03 Mar, 2026 Reviewers agreed at journal 23 Feb, 2026 Reviewers agreed at journal 19 Feb, 2026 Reviewers agreed at journal 05 Feb, 2026 Reviewers invited by journal 03 Feb, 2026 Editor assigned by journal 03 Feb, 2026 Editor invited by journal 02 Feb, 2026 Submission checks completed at journal 31 Jan, 2026 First submitted to journal 31 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. 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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-8698335","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":584911107,"identity":"ef8352fd-2f42-406b-a31b-6ebc942d8658","order_by":0,"name":"chen chen","email":"","orcid":"","institution":"China Nonferrous Metal Industry‘s Foreign Engineering and Construction Co., Ltd","correspondingAuthor":false,"prefix":"","firstName":"chen","middleName":"","lastName":"chen","suffix":""},{"id":584911108,"identity":"20ff4716-deb7-4f4a-908c-e0bf87413d0f","order_by":1,"name":"haoyu 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