A high-precision non-contact monitoring and early warning method for dangerous rocks on slopes

Abstract

The invention provides a high-precision non-contact monitoring and early warning method for dangerous rock on a slope, which specifically includes the following steps: arranging monitoring instruments; calibrating a camera; The large-scale particle image velocity measurement module obtains the image of the dangerous slope of the slope; the calculation module calculates the dominant frequency of vibration and the displacement change rate of the dangerous slope of the slope according to the velocity time history and the image of the dangerous slope of the slope; monitors the vibration dominance of the dangerous slope of the slope in real time. When the frequency and displacement change rate reach the preset threshold, an early warning is issued, and the shooting frequency of the large-scale particle image velocimetry module is adjusted according to the warning information; this method is based on the large-scale particle image velocimetry technology and laser vibration measurement technology. The remote, non-contact, real-time monitoring and early warning of dangerous slope rocks is superior to the traditional monitoring methods for dangerous slope rocks, and has a good application prospect.

Description

technical field [0001] The invention relates to the technical field of monitoring and early warning of dangerous rocks on slopes, in particular to a high-precision non-contact monitoring and early warning method for dangerous rocks on slopes. Background technique [0002] my country is a country with frequent collapse disasters. Every year, the loss of life and property caused by the collapse of dangerous rock is huge. The monitoring and early warning of dangerous rocks on slopes has always been a research hotspot and difficulty in disaster prevention and mitigation projects. The purpose of monitoring and early warning of dangerous rock on the slope is to discover and grasp the displacement and movement of the dangerous rock block in time, and to monitor the displacement speed and direction of the dangerous rock on the slope as well as the stability of the dangerous rock. It is of great significance to study an effective and convenient method for monitoring and early warnin...

AI Technical Summary

Problems solved by technology

[0003] However, most of the existing monitoring and early warning technologies for dangerous rocks on slopes are contact monitoring methods, which have defects such as complicated deployment of monitoring instruments, high risk in the deployment process, and only single-point monitoring.

Although some existing non-contact monitoring methods for dangerous rocks on slopes have overcome many shortcomings of contact methods, they still have defects such as low measurement accuracy and expensive equipment.

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