{"686381":{"#nid":"686381","#data":{"type":"event","title":"PhD Defense by Renzo S. Cornejo Tejada","body":[{"value":"\u003Cp\u003EAnnouncement distributed 12 days in advance due to GSSO absence.\u0026nbsp;\u003C\/p\u003E\u003Cp\u003ESchool of Civil and Environmental Engineering\u003C\/p\u003E\u003Cp\u003EPh.D. Thesis Defense Announcement\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EAssessment of Large Deformation Problems in Tailings Engineering Using Particle-Based Methods\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EBy\u003Cstrong\u003E\u0026nbsp;Renzo S. Cornejo Tejada\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EAdvisor:\u003C\/p\u003E\u003Cp\u003E\u003Cstrong\u003EDr. Jorge Macedo Escudero (CEE)\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003ECommittee Members:\u003Cstrong\u003E\u0026nbsp;Dr. Susan Burns (CEE), Dr. Paul Mayne (CEE), Dr. Alba Yerro Colom (CEE - VT), Dr. Scott Olson (CEE - UIUC)\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003EDate and Time:\u003Cstrong\u003E\u0026nbsp;November 25th, 2025, at 9:00 am EST\u003C\/strong\u003E\u003C\/p\u003E\u003Cp\u003ELocation:\u0026nbsp;Mason 2119\/\u0026nbsp;\u003Ca href=\u0022https:\/\/teams.microsoft.com\/l\/meetup-join\/19%3ameeting_ODc3YzA0MDUtZmYwYS00YTlmLWI2ZWQtMGE2MjcyNzI0MzQ1%40thread.v2\/0?context=%7b%22Tid%22%3a%22482198bb-ae7b-4b25-8b7a-6d7f32faa083%22%2c%22Oid%22%3a%22506fdc59-e0d0-4a14-934d-91d95872cc5e%22%7d\u0022\u003E\u003Cstrong\u003ETeams\u003C\/strong\u003E\u003C\/a\u003E\u0026nbsp;(ID: 248 089 285 775 59, Passcode: MZ2hX76L)\u003C\/p\u003E\u003Cp\u003EABSTRACT\u003Cbr\u003ERecent tailings storage facility (TSF) failures - including Fund\u00e3o, Cadia, and Feij\u00e3o - have exposed gaps in the geotechnical community\u2019s understanding of mine tailings behavior. This thesis reassesses the triggering mechanism and post-triggering runout of two major TSF failures (Cadia and Fund\u00e3o) by coupling small-deformation stability analyses with large-deformation simulations. These studies demonstrate the value to link failure initiation to runout and to quantify sensitivities relevant to design, forensic evaluation, and risk-informed mitigation of TSFs. Additionally, this thesis evaluates field and numerical investigations from multiple tailings storage facilities to advance interpretation of tailings based on CPTu data under partially drained conditions. Integrating CPTu, laboratory characterization, and rate-dependent numerical modelling reduces ambiguity in identifying operative drainage conditions and constraining parameters such as the state and coefficient of consolidation. These findings highlight the need to account explicitly for partial drainage and stratification when using CPTu to characterize tailings and to adopt coupled test\u2013simulation workflows for more reliable site assessment.\u003C\/p\u003E","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003E\u003Cstrong\u003EAssessment of Large Deformation Problems in Tailings Engineering Using Particle-Based Methods\u003C\/strong\u003E\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"Assessment of Large Deformation Problems in Tailings Engineering Using Particle-Based Methods"}],"uid":"27707","created_gmt":"2025-11-12 15:26:22","changed_gmt":"2025-11-12 15:33:20","author":"Tatianna Richardson","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2025-11-25T09:00:00-05:00","event_time_end":"2025-11-25T11:00:00-05:00","event_time_end_last":"2025-11-25T11:00:00-05:00","gmt_time_start":"2025-11-25 14:00:00","gmt_time_end":"2025-11-25 16:00:00","gmt_time_end_last":"2025-11-25 16:00:00","rrule":null,"timezone":"America\/New_York"},"location":"Mason 2119\/ Teams ","extras":[],"groups":[{"id":"221981","name":"Graduate Studies"}],"categories":[],"keywords":[{"id":"100811","name":"Phd Defense"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[{"id":"1788","name":"Other\/Miscellaneous"}],"invited_audience":[{"id":"78771","name":"Public"}],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}