Application of High-density Electrical Method and Microkinetic Spectral Ratio Method in Leakage Detection of Shiwangou Reservoir in Qingdao

In this paper, Shiwangou Reservoir in Qingdao City is taken as the research object. High-density electrical method and microtremor spectral ratio method are used to jointly detect the dam body in the southeast of the reservoir. By analyzing the "distortion phenomenon" of the high-low resistance conversion and the small spectrum ratio area of the high-low spectrum ratio conversion, the location and scale of leakage are found, and the permeability path is estimated to be a trend of about 354° and a width of about 20 m. After verification by drilling, the results show that the joint detection has achieved good results , which provides a reliable basis for the reservoir's later anti-seepage treatment.