High precision monitoring and early warning system and method for roof deformation

Abstract

The invention provides a high precision monitoring and early warning system and method for roof deformation, and relates to the technical field of roadway deformation monitoring and early warning. Thesystem comprises an explosion-proof optical fiber sensor, a sensor integration device, a signal conversion device, a data transmission device and a data processing unit, the explosion-proof optical fiber sensor converts a roof displacement signal into spectral information, the sensor integration device is connected with the explosion-proof optical fiber sensor within the same monitoring range, the signal conversion device is connected with the sensor integration device, so that the spectral information is converted into an electronic signal, and the data transmission device transmits the electronic signal to the data processing unit. According to the high precision monitoring and early warning system and method for roof deformation, when the system is used for monitoring, the explosion-proof optical fiber sensor is installed in a selected monitoring area, each component of the system is connected to monitor the displacement of a roof, a central controller and the data processing unitestablish a spatial three-dimensional model of surrounding rocks, the roof deformation is determined in real time according to the deformation monitoring and spatial coordinates, and monitoring is more accurate and convenient and also has the advantages of sensitivity and intuition.

Description

technical field [0001] The invention relates to the technical field of roadway deformation monitoring and early warning, in particular to a high-precision monitoring and early warning system for roof deformation of roadways or tunnels, and a monitoring and early warning method. Background technique [0002] With the progress of coal mining, the length and depth of mine roadways are increasing rapidly. In addition, a large number of tunnel projects are also being built. Large-scale roof fall and collapse accidents caused by deformation of roadways and tunnel roofs often occur. Strengthen the monitoring of roadway and tunnel roof settlement. without delay. The deformation of roadway and tunnel roof is the main engineering monitoring parameter content. According to the monitoring results, the deformation speed of roadway and tunnel roof, the deformation convergence rate of roadway and tunnel roof can be calculated, and the relationship between deformation, deformation speed and...

AI Technical Summary

Problems solved by technology

The installation and line layout of the device are relatively cumbersome, the measurement sampling interval is relatively random, and the sleeve as the installation carrier is easily disturbed by the external environment

Chinese patent CN106908033A, "A device for synchronous measurement of multi-point displacement of the goaf roof and its measurement method" calculates the displacement changes of each base point of the goaf roof at the same time, and uses the grating ruler displacement sensor to detect the settlement of the roof and the deep displacement of the overlying rock, without the need to The transmission line is buried in the complex environment of the goaf; however, the selected grating scale displacement sensor only works in a small roof area and cannot realize long-distance roadway roof settlement measurement, and a large number of grating scale displacement sensors are required to complete a measurement

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