The application belongs to the technical field of urban drainage
pipe and channel detection, and discloses a three-dimensional
laser scanning detection method for drainage pipes and channels. The method comprises eight steps of establishing a preliminary
pipe and channel three-dimensional design model, mastering the internal condition of the drainage
pipe and channel, classifying the drainage pipes according to the internal condition of the drainage pipe and channel according to the complexity of the pipe and channel, selecting a corresponding three-dimensional
laser scanning
operation mode according to the classification, laying a positioning target, obtaining the three-dimensional coordinates of the positioning target, implementing three-dimensional
laser scanning detection,
processing detection data, and extracting and identifying detection result information. The method gives corresponding operation
modes under different working conditions, can realize the acquisition of three-dimensional information of the pipe and channel space, realizes the double improvement of detection efficiency and result quality through model lightweight transformation, can effectively detect the changes of complex large-
diameter drainage pipes and channels, and the detection result can be used as a basis for the
treatment design of the drainage pipe and channel, which has important significance for ensuring the
safe operation of urban drainage.