Comparison of voussoir-beam stability assessments in underground rooms based on analytical and numerical methodsShow others and affiliations
2024 (English)In: NEW CHALLENGES IN ROCK MECHANICS AND ROCK ENGINEERING, EUROCK 2024 / [ed] Tomas, R Cano, M Riquelme, A Pastor, JL Benavente, D Ordonez, S, CRC PRESS-BALKEMA , 2024, p. 237-243Conference paper, Published paper (Refereed)
Abstract [en]
In this study, the authors compare analytical voussoir-analogue based solutions with numerical ones, implemented through 2D distinct-element-method based simulations, in the context of the application of these analyses to the design of underground rooms in bedded rock masses, based on the conditions found in a particular underground room and pillar carbonate mine. Some guidelines are given on how to derive key parameters required for both approaches based on laboratory rock testing, rock mass characterization, and in-situ observations. Particular attention is devoted to quantifying the influence of the roof span, bedding dip, and the occurrence of an overload (associated with highly-fractured beds over the already-detached roof). The performance of the analytical solution in calculating the maximum deflection and compressive stresses within a beam is verified through several 2D numerical models, which, in turn, are capable of capturing the instability mechanisms occurring in the mine.
Place, publisher, year, edition, pages
CRC PRESS-BALKEMA , 2024. p. 237-243
National Category
Other Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-355785DOI: 10.1201/9781003429234-30ISI: 001310272000030Scopus ID: 2-s2.0-85200417661OAI: oai:DiVA.org:kth-355785DiVA, id: diva2:1910518
Conference
ISRM European Rock Mechanics Symposium, JUL 15-19, 2024, Alicante, SPAIN
Note
QC 20241105
Part of ISBN 978-1-032-55145-6; 978-1-003-42923-4; 978-1-032-55144-9
2024-11-052024-11-052024-11-05Bibliographically approved