Study on the Fracture Mechanism of Collapse Column Under the Influence of Dynamic Pressure
Abstract：In order to research the disturbance and destruction mechanism of the the fracture zone around collapse column caused by the dynamic pressure, the FLAC3D software was used to simulate the variation of the horizontal stress and distribution of plastic zone in frac- ture zone with the advance of the working face. The numerical simulation results provided that the cracks in the fracture zone around collapse column easily occurred crack propagation and coalescence which may lead to water inrush. The results showed that crack was propagation and coalescence due to the reduce of horizontal stress, which may lead the fracture zone to be dominant channel for mine water - conducting .
Keywords：collapse columnfracture zonedynamic pressuredisturbance and destructionnumerical simulation
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 60-62 )