Numerical Simulation on Effect of Pressure-Released Hole Combined Support with Rockbolt by Dynamic Loading

Abstract:

In order to study the effect on the structure of pressure-released hole combined support with rockbolt under dynamic loading, utilize RFPA^2D-Dynamics on a numerical simulation of dynamic responses of roadway surrounding rock under different depths and different continued time of stress wave and different amplitudes of stress wave. It had gained the general law of the stress redistribution of roadway surrounding rock under static-dynamic coupling loading, and analysed the damage effect of static-dynamic coupling loading to surrounding rock from the perspective of acoustic emission energy release and failure units. Studies show that dynamic disturbance is the main inducing factor on instability of deep roadway supported by pressure-released hole combined support with rockbolt, the waveform of dynamic stress has important influence on broken surrounding rock, with the stress amplitude is the higher and the action time is longer, dynamic disturbance on stability of roadway bring about more significant effect would become.

• Periodical: Applied Mechanics and Materials (Volumes 490-491)
• Pages: 789-793
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.490-491.789
• Online since: January 2014
• Authors: Xi Xian Song, Yu Jun Zuo*, Wan Cheng Zhu, Cheng Yu Jiang, Pai Ke Wen
• Keywords: Dynamic Loading, Numerical Simulation, Pressure-Released Hole, Rockbolt

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