Fundamental Theroy and Experimental Research

Experimental research on propagation characteristics of block-rock mass pendulum-type wave under shock load

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  • 1. Institute of Civil and Transportation, Liaoning Technical University, Fuxin, Liaoning 123000, China; 2. Research institute of Rock Burst, Liaoning Technical University, Fuxin, Liaoning 123000, China

Received date: 2014-06-04

  Online published: 2018-06-14

Supported by

Project supported by the State Key Program for Basic Research of China (Grant No.2010CB226803), the Natural Science Foundation of Liaoning Province (Grant No. No.201204414) and the Natural Science Foundation of Liaoning Provincial Department of Education (Grant No. L2012107).

Abstract

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.

Cite this article

JIA Bao-xin , CHEN Yang , PAN Yi-shan , JIANG ming , ZHAO pei , WANG Kai-xing, . Experimental research on propagation characteristics of block-rock mass pendulum-type wave under shock load[J]. Rock and Soil Mechanics, 2015 , 36(11) : 3071 -3076 . DOI: 10.16285/j.rsm.2015.11.005

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