Automatic shield tail gap measuring device and method

The invention discloses a shield tail gap automatic measuring device and method, the automatic measuring device is arranged on the inner wall of a shield tail and located in a gap formed between the shield tail and a segment, the shield tail is provided with at least one arc-shaped groove, and the automatic measuring device moves along the arc-shaped groove to realize real-time measurement of gaps at different positions. According to the invention, the automation degree and the measurement precision of the automatic measurement device can be improved, the service life can be prolonged, the operation is easy, the minimum value and the true value of the shield tail gap can be measured, the measurement data can be fed back in real time, the shield tail gap value can be accurately obtained at the first time, and the construction parameters can be adjusted in time, so that the segment assembling and forming quality can be guaranteed. 本发明公开了一种盾尾间隙自动测量装置及方法，自动测量装置设于盾尾的内壁上，并位于盾尾与管片之间形成的间隙内，盾尾上设有至少一条弧形槽，自动测量装置沿弧形槽移动，实