科研之友
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摘要
The accurate prediction of direction of coal or rock fracture source and the determination of major disaster area can make prevention measures of coal or rock dynamic disasters more effective. Based on the electromagnetic effect regularity of coal or rock deformation and fracture and the basic theory of electromagnetic wave, a method to determine the location of local mine earthquake source using the energy of electromagnetic signal is proposed. The effectiveness of the proposed method is verified through electromagnetic radiation directional receiving experiment in laboratory and field test of mine earthquake location in No. 10 mine of Pingdingshan Tian'an Coal Mining Corp. Ltd. Results show that Electromagnetic signal intensity varies with the stress changes. The electromagnetic signal energy of two orthogonal antennas is respectively in direct proportion to the cosine square of their receiving angles. Thus, the location of source can be calculated according to the proportional relationship. Furthermore, Electromagnetic signal location method is consistent with static index method in predicting risk of local area. The research results can provide basis for the determination of major disaster area of the coal and rock dynamic disasters.
- 出版日期2014-3
- 单位中国矿业大学（北京）
