Numerical investigation of slip and fracture instability mechanism of coal- rock parting-coal structure (CRCS)

Yang Liu, Cai Ping Lu, Heng Zhang, Hong Yu Wang

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Based on theoretical analysis and numerical simulations, the factors that influence the slip and fracture instability of coal-rock parting -coal structure (CRCS) were investigated. Stress, coefficient of friction and energy dissipation during slip and fracture instability were analysed individually. The macro- and microscopic mechanical behaviours, especially acoustic emission (AE) characteristics, were determined. According to the variations in stress, energy and b-value of AE events, the precursors of CRCS slip and fracture instability were summarized. Finally, the instability mechanism was proposed. This work is relevant for early warning coal-rock dynamic disasters that are triggered by slip and fracture instability of CRCS in coal mines.

Original languageEnglish
Pages (from-to)265-278
Number of pages14
JournalJournal of Structural Geology
Volume118
DOIs
Publication statusPublished - Jan 2019

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