Contact type shield tail gap measuring system and measuring method thereof

Abstract

The invention discloses a contact type shield tail gap measuring system and measuring method thereof. The system comprises an upper computer, a control box and a measuring device, wherein the upper computer is in control connection with the measuring device through the control box, the measuring device is a mechanical contact type shield tail gap measuring device and is installed on a shield tail jack shoe plate, the measuring device comprises a mechanical arm, the mechanical arm is controlled by the control box to make contact with the inner wall of a shield shell and the inner surface of a duct piece in a rotating mode, the upper computer obtains a numerical value of the rotating angle when the mechanical arm makes contact with the inner wall of the shield shell and the inner surface of the duct piece in a rotating mode, and the numerical value of a shield tail gap is calculated. According to the contact type shield tail gap measuring method, the height from the inner surface of a duct piece to the inner wall of a shield tail shield shell is measured through a mechanical contact type shield tail gap measuring device, and then the shield tail gap is calculated. The contact type shield tail gap measuring system is low in cost, easy to operate, high in measurement precision and suitable for the working environment in charge of the shield tunneling machine.

Description

technical field [0001] The invention relates to the technical field of shield tunneling, in particular to a contact-type shield tail gap measurement system and a measurement method thereof. Background technique [0002] At present, tunnel construction has become an indispensable part of road construction. For example, railways and highways that involve crossing rivers or crossing key buildings and urban subways need to build tunnels. The shield method construction is a construction method in which the shield is the core to dig underground tunnels, and it occupies a large proportion of the entire tunnel construction. In the shield construction process, in order to ensure the quality of the construction and the safety of the tunnel, it is necessary to measure the distance between the segments assembled into a ring and the shield cavity, that is, the shield tail gap, during the entire construction process. If the gap is too small, it will generally cause damage to the hand hol...

AI Technical Summary

Problems solved by technology

If the gap is too small, it will generally cause damage to the hand hole or longitudinal cracks, which will affect the safety of the entire tunnel

[0003] At present, the measurement methods of shield tail gap include manual measurement, laser measurement, image processing and mechanical measurement, etc., but the accuracy of most measurement systems is not very high

At the same time, the instruments for laser measurement and image processing are more sophisticated, and the adaptability to complex environments is relatively poor, and most of the shield machines are humid and dark.

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