Double-couple source ground-well transient electromagnetic detection method

The invention relates to a double-couple source ground-well transient electromagnetic detection method, which includes the following steps: a grounding lead is placed in a ground area corresponding toa roadway to be detected which is located underground as a double-electric dipole emission source used for generating an electromagnetic field; at a top plate, a bottom plate and/or a lateral wall ofthe roadway to be detected, receiving devices are arranged along the roadway direction, and the receiving devices include single or a plurality of receiving probes, and can collect electromagnetic signals received by each of the receiving probes; bipolar pulse current is applied to the double-electric dipole emission source to excite an electromagnetic field; an underground medium is subjected toinduction of the electromagnetic field to generate an induction electromagnetic field, and the underground medium includes ground or a detection target layer/body; each of the receiving probes measures the induction electromag