Abstract: In the long distance or curve pipe jacking project, timely and accurate measurement of the position and posture of the front pipe jacking machine is a key technical means to ensure the pipe jacking according to the design axis. Whether it is compared with the position and attitude measurement of the linear pipe jacking machine or compared with the shield machine, the measurement of the position and posture of the long distance and curve jacking pipe is more difficult. This paper has carried out a special research on this problem, and developed a set of curve pipe jacking automatic measurement system. It introduces the system in detail, expounds the design principle and work flow of the system, and analyzes the application data results to optimize the system accuracy.

Key words: curved pipe jacking, guiding system, laser target, long distance pipe jacking