Method for monitoring three-dimensional deformation of foundation pit

Abstract

The invention discloses a method for monitoring three-dimensional deformation of a foundation pit. The method is used for the field of construction safety monitoring. The method includes: acquiring monitored picture information of a slope of the foundation pit through photographing of a measurement camera, then utilizing close-range photogrammetric technology to perform information processing on monitored pictures, acquiring three-dimensional coordinates of monitoring points of the slope of the foundation pit, acquiring three-dimensional coordinates at different time points via photographing at different moments, drawing a tendency chart of the three-dimensional coordinates, changing over time, of all the monitoring points, and acquiring displacements of all the monitoring points in the monitoring process so as to predict deformation tendency of each monitoring point. Compared with the prior art, the method has the advantages that a large amount of physical information and geometrical information of the measured foundation pit can be acquired instantaneously, and monitoring is completed in rugged environment and on the conditions of no damage to the measured foundation pit and noninterference in the natural state of the foundation pit. The means of digital information and digital imaging technology and self-control technology are ingeniously applied to safety monitoring for the foundation pit. The whole monitoring process is efficient, low in cost, safe and reliable.

Description

technical field [0001] The invention is used in the field of construction safety monitoring, and in particular relates to a method for monitoring three-dimensional deformation of foundation pits. Background technique [0002] With the continuous emergence of high-rise and ultra-high-rise buildings, the depth of foundation pits is getting deeper and deeper. Therefore, construction accidents in foundation pits often occur, posing a serious threat to people's lives, property and personal safety. Fast and efficient prediction of deformation has become very important. urgent. At present, my country usually uses traditional surveying and mapping technology for monitoring, which takes a long time; electronic sensor components can improve monitoring accuracy, but the cost is also high, and they are easily damaged due to construction conditions, resulting in missing monitoring data. The above methods are all contact monitoring, which will not only interfere with the on-site construc...

AI Technical Summary

Problems solved by technology

At present, my country usually uses traditional surveying and mapping technology for monitoring, which takes a long time; electronic sensing components can improve monitoring accuracy, but the cost is also high, and it is easy to be damaged due to construction conditions, resulting in missing monitoring data

The above methods are all contact monitoring, which will not only interfere with the on-site construction, but also have monitoring blind spots, and the monitoring technicians themselves also have potential safety hazards

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