Research on cable well survey technology based on L structure

For the information survey of cable well, this paper proposes a cable well survey technology based on the "L" structure, which realizes the survey of different position information through the manipulation of the "L" structural unit, uses the video system to observe the internal state of the cable well, and uses the combination of laser ruler and image analysis to achieve accurate measurement of the pipe hole size at the end surface of the cable well, with a measurement accuracy of better than 3mm, and realizes the resolution of pipe holes of different sizes. It can be seen that the successful development of the cable well survey system based on the "L" structure realizes the survey of cable well parameters without personnel going down the well, which has good engineering application value.