Real-time monitoring device for convergence and deformation of surrounding rock in shield area of shield machine

Abstract

The invention relates to a real-time monitoring device for the convergence and deformation of surrounding rock in the shield area of a shield machine. The device is composed of a push rod motor, an H-bridge circuit, an ARM chip and a power supply module which are fixed on a mounting plate in a protection box, a laser radar fixed to a push rod of the motor, a hardware part such as a portable WIFI module embedded in the side wall of the protection box, and a software part such as a control program and a communication protocol written for the device. The device filters the measurement data by thesignal processing technology and the curve fitting algorithm to enable the cross-section shape of the surrounding rock to reappear. The box body is embedded in the inner wall of the shield through lugs on both sides, and the laser radar pushes the tempered glass at the top of the box body to lean out of the shield to carry out measuring. The real-time monitoring device for the convergence and deformation of surrounding rock in the shield area of the shield machine can acquire the precise change curve of the surrounding rock in real time, and monitor and early warn the breakdown of the shieldmachine caused by the extrusion deformation of the surrounding rock, thereby reducing the huge economic loss caused by the breakdown. The real-time monitoring device is convenient to assemble and disassemble and small in overall size, adopts the wireless transmission mode, and is suitable for various complex geological environments.

Description

technical field [0001] The invention relates to a monitoring device for surrounding rock deformation in a shield area of ​​a shield machine, in particular to a laser radar-based real-time monitoring device for the convergence deformation of surrounding rock in the shield area of ​​a double-shield type shield machine. technical background [0002] Shield boring machine is a large-scale equipment for tunnel and subway construction. Among them, the shield-type shield machine is particularly widely used in caverns with loose soil, high ground stress and weak surrounding rock. During tunnel excavation, the surrounding rock in the shield area of ​​the shield-type shield machine will deform with the excavation. When the deformation reaches a certain level and the resistance caused by the stress of the surrounding rock acting on the shield exceeds the escape thrust of the shield machine , it will cause the shield of the shield machine to be stuck, resulting in a jamming accident. ...

AI Technical Summary

Problems solved by technology

[0007] The present invention aims to solve the problem of monitoring the deformation of the surrounding rock at the shield of the double-shield type shield machine by using emerging technical means. The monitoring device for the deformation of the surrounding rock at the shield of the double-shield type shield machine has good real-time performance , Easy installation, remote wireless operation, less interference to the construction process, etc.

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