Tunnel sedimentation convergence automatic measurement system

Abstract

The invention discloses a tunnel sedimentation convergence automatic measurement system and belongs to the technical field of tunnel monitoring and measurement, and especially relates to a measurementinstrument device and measurement method used for tunnel crown settlement, clearance convergence and ground surface settlement. The system is mainly composed of a clearance convergence measurement unit, a settlement measurement unit (including a crown settlement measurement device and a ground surface settlement device), a control terminal, a temperature / humidity sensor, accessories (a dedicatedmeasurement connection pipe, a connection cable, a light reflecting board and the like) and a set of measurement software. A laser phase ranging submillimeter measurement technology, a precision levelmeasurement technology, a self-networking ultra-low power consumption wireless communication technology, a function conversion indirect measurement technology, a height reference importing technology, a software measurement technology and a rapid assembly and disassembly connection method are adopted integrally, so that high precision and automation of the system are ensured.

Description

technical field [0001] The invention belongs to the technical field of tunnel monitoring and measurement, and in particular relates to a measuring instrument and a measuring method for measuring tunnel vault subsidence, headroom convergence and ground surface subsidence. Background technique [0002] In the process of tunnel construction, timely and accurate measurement and analysis of the settlement and convergence deformation of the surrounding rock should be carried out to ensure construction safety and long-term stability of the structure, effectively guide construction, avoid geological disasters and construction accidents, and accumulate measurement data , Provide a basis for information design and construction. For example, Article 4.1.4 of the Technical Regulations for Monitoring and Measurement of Railway Tunnels (Q / CR 9218-2015) stipulates that the monitoring and measurement work should be carried out in time with the construction process, the measurement points sh...

AI Technical Summary

Problems solved by technology

[0004] First, the on-site measurement is time-consuming and laborious, the measurement data processing is cumbersome, and the work efficiency is low. It is impossible to grasp the situation in real time and give feedback to guide the construction. In particular, it is difficult to grasp the rapid settlement of the initial state, which brings certain hidden dangers to construction safety;

[0005] The second is that the measurement workload is relatively large, which may even affect the construction progress. For example, in the case of five-level dangerous rocks, the monitoring and measurement of items such as vault settlement and headroom convergence require intervals of no more than 6 hours, and each measurement usually requires at least It takes about 2 hours for 3 professionals to complete, and for each measurement point, it usually needs continuous monitoring for a week or even longer;

[0006] Third, due to the accidental and random nature of manual operations, human errors are prone to occur, and it is difficult to meet the measurement accuracy requirements of 0.5mm~1mm

[0007] Fourth, construction and measurement interfere with each other, especially in the case of spraying anchors, slag discharge or large vehicles entering and exiting, which will directly affect the work and safety of monitoring and measuring personnel

[0008] At present, accurate and fast tunnel monitoring measurement methods and instruments are still under continuous research, but there is no effective and perfect measurement method and instrumentation, especially no patent application similar to the present invention has appeared.

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