Transient electromagnetic detection has the following advantages
⑴ Due to high construction efficiency, pure secondary field observation and sensitivity to low-resistance bodies, it has become the preferred method in the current coalfield hydrogeological exploration;
⑵ Transient electromagnetic method is the most sensitive method to find low-resistance geological bodies in high-resistance surrounding rocks, and there is no terrain effect;
(3) The same point combination observation is adopted, which has the best coupling with the detection target, strong abnormal response, simple form, and strong resolution ability;
⑷ Profile measurement and sounding work are completed at the same time, providing more useful information.