Drone-based non-contact high slope surface displacement monitor method and monitor system

Abstract

The invention discloses a drone-based non-contact high slope surface displacement monitor method. The method comprises following steps of: burying a monitor pile; burying a monitor base point, and determining spatial coordinates of the monitor base point; determining an aerial photographing region according to a high slope, a position of the monitor point and a position of the monitor base point,and collecting images of the aerial photographing region by using a drone; processing images collected by the drone, and calculating spatial coordinates of a center point of each monitor pile according to a camera parameter and the spatial coordinates of the monitor base point; performing aerial photographing in the aerial photographing region for many times, acquiring spatial coordinates of the center point of the monitor pile each time, calculating displacement change each time, performing surface reconstruction on the high slope according to displacement change each time, and generating a displacement cloud picture; and evaluating stability of the high slope quantitatively according to displacement change. The method improves monitor efficiency of the high slope remarkably, saves cost,and reaches monitor accuracy of a construction monitor requirement.

Description

technical field [0001] The invention relates to the technical field of high slope surface displacement monitoring, and more specifically relates to a UAV-based non-contact high slope surface displacement monitoring method and monitoring system. Background technique [0002] With the rapid development of expressways in my country and the continuous improvement of engineering construction levels, expressways can be constructed under more steep and complex terrain conditions, so it is inevitable to encounter many high slope projects during the construction process. question. The excavation of the high slope of the project will inevitably cause the deformation of the rock mass within the affected area, and the ground stress will be released and adjusted accordingly, which will have an adverse effect on the stability of the slope. The safety status of slope rock and soil is directly related to the safety of road construction. Therefore, the safety assessment and disaster warning ...

AI Technical Summary

Problems solved by technology

[0004] First, the traditional monitoring method of manual inspection: it is suitable for relatively gentle slopes that are convenient for inspectors to inspect. This method consumes manpower, the accuracy of slope monitoring is very low, the detection range is limited, and the safety of inspectors is not guaranteed;

[0005] Second, the on-site measurement method of instruments such as total stations: it is suitable for the slope where it is convenient to find fixed monitoring points and easy to place monitoring instruments. This method has a large amount of work, high equipment costs, labor-intensive, low measurement accuracy, and limited monitoring range;

[0008] It can be seen that although there are many methods for slope deformation monitoring at present, each method has different defects such as consuming a lot of manpower and material resources, and the instrument is easily damaged, and there is a lack of standardization.

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