Research on the Stability and Dynamic Characteristics of Ultra-High-Level Collapse Dangerous Rock Mass — A Case Study of the Dajialin Temple Collapse

Research on the Stability and Dynamic Characteristics of Ultra-High-Level Collapse Dangerous Rock Mass — A Case Study of the Dajialin Temple Collapse | 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 Research on the Stability and Dynamic Characteristics of Ultra-High-Level Collapse Dangerous Rock Mass — A Case Study of the Dajialin Temple Collapse An Yuan, Shihao Zhou, Chuanbing zhu, An Chen, Kangli Xiao, Yating Zhang, and 1 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7875037/v1 This work is licensed under a CC BY 4.0 License Status: Under Revision Version 1 posted 10 You are reading this latest preprint version Abstract There is a 620-meter vertical elevation differential in the extraordinarily high-elevation unstable rock pile that formed around the back of Dagaling Monastery.It is a serious threat to the security of the monastery below because of its tremendous impact energy, wide affected range, and potent disaster chain potential. Due to the combined effects of weathered voids at its base, overhanging unloading, and joint development, the unstable rock mass in the studied region displays a toppling collapse pattern. In order to comprehensively examine the distribution of rock masses and their movement characteristics, orthographic projection analysis was used to establish the direction of the collapse. Field surveys and UAV aerial mapping were also used as supplements. Then, using LPF3D software, three-dimensional kinematic simulations were performed. According to the results, both seismic and gravitational forces combined to cause the unstable rock mass to collapse. With a maximum velocity of 43.4 m/s and a maximum kinetic energy of 2037 kJ, the velocity of falling rocks and impact kinetic energy showed a trend of initial increase followed by reduction. The final accumulation zone of fallen rocks was next to the temple structures, posing a serious risk. The simulation results are consistent with actual collapse features, demonstrating the efficacy and dependability of combining UAV remote sensing with 3D simulation to anticipate ultra-high-altitude collapses. This provides critical scientific support for geological hazard prevention and management in high mountainous areas. extra-high position toppling-type collapse stereographic projection UAV aerial survey LPF3D Full Text Additional Declarations No competing interests reported. Cite Share Download PDF Status: Under Revision Version 1 posted Editorial decision: Revision requested 15 Mar, 2026 Reviews received at journal 11 Mar, 2026 Reviews received at journal 10 Mar, 2026 Reviewers agreed at journal 18 Feb, 2026 Reviewers agreed at journal 15 Feb, 2026 Reviewers agreed at journal 26 Oct, 2025 Reviewers invited by journal 23 Oct, 2025 Editor assigned by journal 16 Oct, 2025 Submission checks completed at journal 16 Oct, 2025 First submitted to journal 16 Oct, 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-7875037","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":539838839,"identity":"0f58588e-cf36-413f-8151-8c356eedeede","order_by":0,"name":"An Yuan","email":"","orcid":"","institution":"Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China","correspondingAuthor":false,"prefix":"","firstName":"An","middleName":"","lastName":"Yuan","suffix":""},{"id":539838840,"identity":"f981bcb6-33a3-4dff-85a7-9cb730061151","order_by":1,"name":"Shihao 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Due to the combined effects of weathered voids at its base, overhanging unloading, and joint development, the unstable rock mass in the studied region displays a toppling collapse pattern. In order to comprehensively examine the distribution of rock masses and their movement characteristics, orthographic projection analysis was used to establish the direction of the collapse. Field surveys and UAV aerial mapping were also used as supplements. Then, using LPF3D software, three-dimensional kinematic simulations were performed. According to the results, both seismic and gravitational forces combined to cause the unstable rock mass to collapse. With a maximum velocity of 43.4 m/s and a maximum kinetic energy of 2037 kJ, the velocity of falling rocks and impact kinetic energy showed a trend of initial increase followed by reduction. The final accumulation zone of fallen rocks was next to the temple structures, posing a serious risk. The simulation results are consistent with actual collapse features, demonstrating the efficacy and dependability of combining UAV remote sensing with 3D simulation to anticipate ultra-high-altitude collapses. 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