///In
the light of the high complexity and difficulty met by such traditional coal
field fire area exploration methods as high accuracy magnetic method and
isotope radon method in the actual reconnaissance, we need other more effective
exploration methods. The authors utilized the self-potential method to
delineate the boundary of the fire area, which was consistent with the drilling
result. It is shown that the self-potential method is a fairly effective means
in the complex environment of the fire area.