Block stability analysis around a large cavern using probabilistic approach
2010 (English)In: Rock Engineering in Difficult Ground Conditions - Soft Rocks and Karst - Proceedings of the Regional Symposium of the International Society for Rock Mechanics, EUROCK 2009, 2010, 435-440 p.Conference paper (Refereed)
Block stability analysis around a large excavation is analyzed with both Probabilistic Kinematics Limit Equilibrium (PKLE) and Discrete Fracture Network-Distinct Element Method (DFNDEM) approaches. Different combination of geometric parameters of fracture sets are selected in PKLE method and a series of numerical DEM modeling are performed on generated and validated DFN models in DFN-DEM approach to measure volume of potential unstable blocks and also minimum required support patterns. The mean volume of unstable blocks for PKLE with limited joint length assumption is fairly close to DFN models and they are far from mean value of PKLE when the joint length is extended infinitely. The minimum required support pattern for PKLE is smaller than DEM models which means that the PKLE design tool is underestimated compared with DFN-DEM method which benefits more realistic conceptual model and facilitates more sophisticate simulation tool.
Place, publisher, year, edition, pages
2010. 435-440 p.
Conceptual model, Design tool, Discrete fractures, Element method, Geometric parameter, Limit equilibrium, Mean values, Probabilistic approaches, Stability analysis, Support patterns, Fracture, Numerical methods, Rock mechanics, Rocks
IdentifiersURN: urn:nbn:se:kth:diva-150268ScopusID: 2-s2.0-84859893228ISBN: 978-041580481-3OAI: oai:DiVA.org:kth-150268DiVA: diva2:745226
Regional Symposium of the International Society for Rock Mechanics: Rock Engineering in Difficult Ground Conditions - Soft Rocks and Karst, EUROCK 2009; Dubrovnik, Cavtat; Croatia; 29 October 2009 through 31 October 2009
QC 201409102014-09-102014-09-012014-09-10Bibliographically approved