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SCI论文:Geomechanical types and mechanical analyses of rockbursts

标题:Geomechanical types and mechanical analyses of rockbursts

作者:Li, Tianbin*;Ma, Chunchi;Zhu, Minglei;Meng, Lubo;Chen, Guoqing

期刊: ENGINEERING GEOLOGY

卷: 222页:72-83

DOI:10.1016/j.enggeo.2017.03.011

出版年:MAY 18 2017

摘要:

Rockbursts generally occur in highly stressed rock masses because of underground openings. To ensure the safety of construction works, factors that play a role in predicting and preventing rockbursts should be analyzed. Based on numerous geological and mechanical analyses of rockbursts in China, six basic geomechanical types of rockbursts are classified with unique developing characteristics (rock-mass structure, crack type, failure plane, energy release, etc.), which are further divided into stress rockburst and stress-structure rockburst. The stress rockbursts are characterized by the development of micro-cracks using fracture mechanical theories; the formation of a macroscopic failure plane indicates that a state of maximum energy release is achieved (along the preferred crack path). The stress-structural rockbursts are considered a structural failure when propagating cracks intersect the existing discontinuities, which are analyzed using the catastrophe models. Finally, occurrence criteria of the six geomechanical types of rockbursts are proposed. 2017 Elsevier B.V.

关键词: Fracture;Cracks;Disasters;Failure (mechanical);Fracture mechanics;Geomechanics;Rock bursts;Rock mechanics;Rocks;Stresses;Underground structures

入藏号: WOS:000402343900007

链接: http://www.sciencedirect.com/science/article/pii/S0013795217303976

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