Underground continuous wall leakage detection method

The invention relates to the field of geotechnical engineering detection and test, in particular to an underground continuous wall leakage detection method. The method is characterized in that the inner side and the outer side of an underground continuous wall are each provided with multiple test holes; resistivity detection is conducted on two adjacent test holes in the same side in sequence before and after foundation pit dewatering, and the resistivity profiles between the two adjacent test holes are worked out according to the detection result; the resistivity profiles of the same position before and after foundation pit dewatering are compared, if it is found that low-resistance abnormality exists in the resistivity profile after foundation pit dewatering compared with the resistivity profile before foundation pit dewatering, it is judged that leakage occurs to the position, corresponding to the low-resistance abnormal resistivity profile, of the underground continuous wall. The underground continuous wall leakage detection method has the beneficial effects that the amount of collected data is large, the detection resolution ratio is high, sensitivity to the resistivity difference is high, and a good effect is achieved on the aspect of ground wall leakage detection; and leakage detection can be conducted on a certain segment of the underground continuous wall at a time, and meanwhile, no influence on the structural body of the underground continuous wall is generated.