Method for automatically monitoring roadway deformation in real time

Abstract

The invention relates to a method for automatically monitoring roadway deformation in real time. The method comprises the following steps of: distributing cross section marks on a selected cross section of a tested roadway section and distributing a plurality of observation mark points on the cross section; erecting a mining camera probe towards a monitored roadway in a mode that a main optical axis is vertical to the tested cross section; observing the initial true distance between previously-measured observation points, wherein the initial true distance is displayed as a display distance on a computer image; and acquiring a video image of the tested roadway section, monitoring the change of the image on monitoring center software of a computer in real time, processing the video image and automatically recognizing the cross section marks and the observation mark points so as to obtain a relative deformation value and an absolute deformation value in different statistics time scales or calculate the size and the change of the roadway cross section. The method has the advantages of automatic, real-time, continuous and non-contact monitoring, safety and high efficiency. A monitoring result can provide bases for the design of a roadway support, roadway maintenance and the prevention of rock burst and a roof disaster.

Description

technical field [0001] The invention relates to the technical field of mine pressure observation and safety monitoring, in particular to an automatic real-time monitoring method for roadway deformation through real-time monitoring of roadway images. Background technique [0002] In underground rock mass projects such as coal mines and tunnels, there are a large number of roadways, which are the main passages for personnel, vehicles, transportation equipment, materials, mineral resources, gangue and ventilation. Mining activities destroy the original stress balance state of the coal and rock mass, causing stress redistribution around the mining space. When the stress on the surrounding rock of the roadway exceeds its strength, the surrounding rock is deformed, moved or destroyed. The main manifestations of roadway deformation are roof sinking, bottom heaving, rib side, and two-state shrinkage, which are caused by stress redistribution caused by mining or energy released by d...

AI Technical Summary

Problems solved by technology

This method can obtain the absolute displacement of the measuring point, and has the characteristics of high measurement accuracy, strong anti-interference, and non-contact measurement. However, this method still needs to manually operate the camera, and the data acquisition and data processing are not synchronized, so real-time online monitoring cannot be performed.

[0013] In short, most of the existing methods and instruments require manual intervention, and manual operation is required for observation or reading. The degree of automation is low, and the safety of personnel is poor when observing in the roadway section with serious disasters; there is a long time interval between two measurements, usually every day. Once, it is intermittent observation, which cannot realize continuous monitoring, so it can only reflect the deformation of the roadway between the two observation times, and cannot reflect the non-uniform deformation and sudden deformation in real time; the measurement points of one measurement are limited, and can only reflect the The deformation between measuring points has limited information and poor synchronization; the workload of observation is large, and sometimes it has a great impact on production; the measurement results are greatly affected by human factors and the accuracy is low

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