JIA Bao-xin, CHEN Yang, PAN Yi-shan, et al. Experimental research on propagation characteristics of block-rock mass pendulum-type wave under shock load[J]. 2015, 36(11): 3071-3076.
JIA Bao-xin, CHEN Yang, PAN Yi-shan, et al. Experimental research on propagation characteristics of block-rock mass pendulum-type wave under shock load[J]. 2015, 36(11): 3071-3076.DOI: 10.16285/j.rsm.2015.11.005.
The pendulum-type wave is one of the block rock mass inherent dynamic characteristics in deep mining. To study the propagation regularity of deep block rock mass pendulum-type wave
a method combined theory analysis with laboratory experiments is adopted; the pendulum-type wave propagation characteristics under shock load are discussed. In the experiment
twelve pieces of granite and rubber interlayer material are used to establish the experimental model
and the TST5915 dynamic data acquisition system is used for monitoring signals. Acceleration response curves are obtained in homogeneous interlayer and part of thickened interlayer medium
and pendulum-type wave dynamic model theory is also used for analysis. The results show that in the transmission process of pendulum-type wave between the blocks
the frequency is not affected by the energy
but the energy determines the attenuation time of the wave. When the viscosity increases in the block medium
the acceleration amplitudes are declined
but it has no effect on the acceleration attenuation cycle
and the main factors influencing the acceleration attenuation is the energy magnitude of the shock load. The experimental research will provide certain basis for studying dynamic transmission characteristics of pendulum-type wave in the future.