中国物理B ›› 2010, Vol. 19 ›› Issue (10): 105201-105201.doi: 10.1088/1674-1056/19/10/105201

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A numerical analytic method for electromagnetic radiation accompanying with fracture of rocks

陈震, 黄卡玛   

  1. Institute of Applied Electromagnetics, Sichuan University, Chengdu 610064, China
  • 收稿日期:2010-01-24 修回日期:2010-03-15 出版日期:2010-10-15 发布日期:2010-10-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 60531010).

A numerical analytic method for electromagnetic radiation accompanying with fracture of rocks

Chen Zhen(陈震), Huang Ka-Ma(黄卡玛)   

  1. Institute of Applied Electromagnetics, Sichuan University, Chengdu 610064, China
  • Received:2010-01-24 Revised:2010-03-15 Online:2010-10-15 Published:2010-10-15
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 60531010).

摘要: This paper studies Rabinovitch's compression experiments on granite and chalk and proposes an oscillating dipole model to analyse and simulate the electromagnetic radiation phenomenon caused by fracture of rocks. Our model assumes that the electromagnetic radiation pulses are initiated by vibrations of the charged rock grains on the tips of the crack. The vibrations of the rock grains are stimulated by the pulses of the cracks. Our simulations show comparable results with Rabinovitch's compression experiments. From the simulation results, it verifies an assumption that the crack width is inversely proportional to the circular frequency electromagnetic radiation, which is presented by Rabinovitch et al. The simulation results also imply that, by using our oscillating dipole model together with Rabinovitch's two equations about the crack length and crack width, we can quantitatively analyse and simulate the electromagnetic radiation phenomenon, which is induced from the fracture of the rocks.

Abstract: This paper studies Rabinovitch's compression experiments on granite and chalk and proposes an oscillating dipole model to analyse and simulate the electromagnetic radiation phenomenon caused by fracture of rocks. Our model assumes that the electromagnetic radiation pulses are initiated by vibrations of the charged rock grains on the tips of the crack. The vibrations of the rock grains are stimulated by the pulses of the cracks. Our simulations show comparable results with Rabinovitch's compression experiments. From the simulation results, it verifies an assumption that the crack width is inversely proportional to the circular frequency electromagnetic radiation, which is presented by Rabinovitch et al. The simulation results also imply that, by using our oscillating dipole model together with Rabinovitch's two equations about the crack length and crack width, we can quantitatively analyse and simulate the electromagnetic radiation phenomenon, which is induced from the fracture of the rocks.

Key words: oscillating dipoles, electromagnetic radiation model, fracture of rocks

中图分类号:  (Elasticity, fracture, and flow)

  • 91.60.Ba
91.60.Pn (Magnetic and electrical properties) 91.90.+p (Other topics in solid Earth physics)