›› 2016, Vol. 37 ›› Issue (3): 711-718.doi: 10.16285/j.rsm.2016.03.013

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Laboratory simulation of temporospatial evolution characteristics of infrared radiation in the process of rockburst in granite tunnel

TIAN Bao-zhu 1, 2, 3, LIU Shan-jun1, ZHANG Yan-bo2, 3, LIANG Peng2, 3, LIU Xiang-xin2, 3   

  1. 1. College of Resources and Civil Engineering, Northeastern University, Shenyang, Liaoning 110819, China; 2. School of Mining Engineering, North China University of Science and Technology, Tangshan, Hebei 063009, China; 3. Key Laboratory of Mining and Safety Technology of Hebei Province, Tangshan, Hebei 063009, China
  • Received:2015-03-01 Online:2016-03-11 Published:2018-06-09
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (51174071, 51374088) and the National Natural Science Foundation of Henan Province (E2012209047).

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Abstract: Bidirectional loading experiments are conducted on granite specimens with holes to simulate the tunnel rockburst. The infrared thermal images and the minimum infrared radiation temperature are employed to determine the temporospatial evolution characteristics of infrared radiation temperature in the process of rockburst. The results show that the temporospatial evolution characteristics of infrared radiation in rock blasting process are synchronized well with the process of initiation and development of the rockburst. Before the rockburst, it is found that there is the low temperature field in the infrared thermal images nested in the banded temperature field. The low temperature field extension reflects the rockburst breed and development process in the temperature field, and its position of appearance corresponds to the region that rockburst occurs. The evolution of the lowest infrared radiation temperature shows a 4 stage characteristics as rise - brief fall - rise - fall. Three abrupt turning points are observed in the lowest infrared radiation temperature before the rockburst. The above results have some theoretical significance for temporospatial prediction of tunnel rockbursts.

Key words: tunnel rockburst, infrared radiation, temperature field, temporal-spatial prediction

CLC Number: 

  • TD 23

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