Ultrasonic detection method for silo construction cast-in-place pile

The invention relates to the technical field of underground structure detection, in particular to an ultrasonic detection method for a silo construction cast-in-place pile, which comprises the following steps of: determining an ultrasonic detection operation mode of the cast-in-place pile according to a missing image interval fluctuation value, including specific gravity adjustment of clear mud, or specific gravity adjustment of the cast-in-place pile; analyzing the change state of the interval value of the missing image: when the change state of the interval value of the missing image is a rising state, adjusting the moving speed; when the missing image ratio is in a preset missing image ratio range, adjusting the mud settling time; a priority detection area is determined according to the density of the reinforcement cage, or the concrete flow velocity in the pouring process is detected; determining a priority detection area according to the concrete flow velocity uniformity; according to the method, ultraso