Digital display type multifunctional measuring ruler for shield TBM tunnel

Abstract

The invention relates to a digital display type multifunctional measuring ruler for a shield TBM tunnel. The measuring ruler comprises a measuring ruler body, a digital display device, an upper shiftclaw (6) and a lower shift claw (1), wherein the measuring ruler body comprises a measuring main ruler (11) and a measuring base (12); the digital display device (7) comprises a result digital displayscreen (2), a pulley (3), a switch checker (4), a zero setting button (5), a fixing bolt (8), a shield tail gap measurement mode button (9) and a duct piece dislocation measurement mode button (10);the digital display device (7) sleeves the measuring main ruler (11), and the digital display device (7) and the measuring main ruler (11) can move relatively. The upper shift claw (6) and the lower shift claw (1) are fixed on the digital display device (7); and the lower end surfaces of the upper shift claw (6) and the lower shift claw (1) are flush with the lower end surfaces of the digital display device (7) and the measuring base (12). According to the digital display type multifunctional measuring ruler, a shield tail gap and duct piece dislocation can be more conveniently and accuratelymeasured in a tunnel construction environment; the operation is simple; the numerical value is accurate; and a result is convenient to read.

Description

technical field [0001] The invention relates to the construction and detection of TBM shield construction tunnel projects such as urban subways and highway tunnels, and specifically relates to a digital display multifunctional measuring ruler capable of realizing the measurement of tunnel shield tail gaps and segment staggering. Background technique [0002] In recent years, with the development of economy and the rapid progress of shield TBM construction technology, shield TBM construction technology has been more and more applied in urban subways, highway tunnels, cross-river and sea tunnels and other fields. The size of the shield tail gap not only reflects the tunneling posture of the shield TBM, but also determines the amount of backfill behind the segment, which directly affects the construction quality and project cost. At the same time, during the shield TBM construction process, problems such as segment assembly difficulties caused by segment misalignment, segment l...

AI Technical Summary

Problems solved by technology

Inaccurate measurements due to inaccurate positioning when measuring with rulers and set squares

At the same time, the measurement accuracy of the ruler and the triangular plate is small, and the measurement results are not accurate enough

And reading values ​​in the dark tunnel environment is prone to errors

[0004] Aiming at the insufficient detection technology of shield tail clearance and segment displacement in the current shield TBM construction, and to solve the problem of inaccurate and inaccurate measurement of shield tail clearance and segment displacement, the applicant designed a method that can realize tunnel shield tail The digital display multi-functional measuring ruler for gap and segment staggered measurement, the measuring ruler not only has accurate measurement and high precision, but also the digital display is easy to read and operate in the dark tunnel environment, and improves the shield segment backside. The budget accuracy of the backfill volume reduces the staggering of the tunnel segment during the construction process and provides a basis for improving the quality of the project

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