Title :
Analysis on electromagnetic field of coal or rock body fracture with taking a vertical electrical dipole as the emitter by the Counter-Propagation Deduction (CPD) method
Author :
Liu Yin-long ; Qing-Yi, Zhang ; Bai-Sheng, Nie
Author_Institution :
Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
A three-layer medium model set up according to the theory of electromagnetic emission of coal or rock body fracture with taking a vertical electrical dipole in the middle layer as the emitter is analyzed by the Counter-Propagation Deduction (CPD) method. The analytical expressions of Hertz vector and the magnetic field strength in the middle layer are obtained. The results may help to locate the area where coal or rock body fracture occurs.
Keywords :
coal; electromagnetic fields; field emission; coal; counter-propagation deduction method; electromagnetic emission; electromagnetic field; rock body fracture; vertical electrical dipole; Boundary conditions; Electromagnetic analysis; Electromagnetic fields; Electromagnetic modeling; Equations; Impedance; Magnetic analysis; Magnetic fields; Nonhomogeneous media; Zone of coal or rock body fracture; layered media; the Counter-Propagation Deduction (CPD) method; vertical electrical dipole;
Conference_Titel :
Environmental Electromagnetics, 2009. CEEM 2009. 5th Asia-Pacific Conference on
Conference_Location :
Xian
Print_ISBN :
978-1-4244-4344-4
DOI :
10.1109/CEEM.2009.5304426
