TY - JOUR
T1 - Numerical investigation of slip and fracture instability mechanism of coal- rock parting-coal structure (CRCS)
AU - Liu, Yang
AU - Lu, Cai Ping
AU - Zhang, Heng
AU - Wang, Hong Yu
PY - 2019/1
Y1 - 2019/1
N2 - 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.
AB - 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.
KW - Acoustic emission
KW - Coal-rock parting-coal structure (CRCS)
KW - Discontinuity
KW - Precursors
KW - Slip and fracture instability
UR - https://www.scopus.com/pages/publications/85056484096
U2 - 10.1016/j.jsg.2018.11.001
DO - 10.1016/j.jsg.2018.11.001
M3 - Article
AN - SCOPUS:85056484096
SN - 0191-8141
VL - 118
SP - 265
EP - 278
JO - Journal of Structural Geology
JF - Journal of Structural Geology
ER -