Tunnel excavation face scanning device based on multiple fusion data and detection method

Abstract

The invention relates to a tunnel excavation face detection method based on multiple fusion data. The detection method comprises the steps of: collecting and processing three-dimensional point cloud data based on a fixed solid-state laser radar; conducting automatic judging through collection of an infrared thermal imager and a water leakage area; performing multi-channel data fusion on a plurality of infrared thermal imaging and visible light pictures, and projecting the fused images to a reconstructed triangular mesh of an excavation face; and calculating back-break and under-break data according to the tunnel design line data and the design section data. The method has the advantages that: three-dimensional point cloud, visible light and infrared thermal imaging data of the tunnel excavation face can be collected at the same time. And the three kinds of data are fused together in real time through a built-in algorithm of the instrument. Based on the tunnel design line and the designsection data, the acquired over-excavation and under-excavation conditions of each data point can be analyzed, a 3D visual result is displayed to a user through a human-computer interaction interface, and the scanning device is convenient to carry.

Description

technical field [0001] The invention relates to the technical field of tunnel exploration, in particular to a tunnel excavation surface scanning device and detection method based on multiple fusion data. Background technique [0002] At present, a key step in tunnel excavation face construction is to measure the over- and under-excavation data on the surface of the excavation face. The current construction site generally uses a total station or a 3D laser scanner to measure the geodetic coordinate data on the surface of the excavation face; if it is The total station generally relies on the experience of surveyors to measure several parts on the excavation surface, and calculates the corresponding over- and under-excavation values ​​in combination with the existing tunnel line and section design data, so as to evaluate the over- and under-excavation of the entire excavation surface If you use a 3D laser scanner to scan the point cloud of the excavation surface, you need to p...

AI Technical Summary

Problems solved by technology

[0003] If it is a purely practical total station, the number of data points measured manually is very limited, and the over- and under-excavation of the tunnel excavation surface cannot be fully grasped; manual measurement points using a total station also have serious construction interference and take a long time At the same time, the requirements for technicians are relatively high; if you use a 3D laser scanner, although you can collect the point cloud of the excavation surface in all directions, industrial-grade 3D scanners are expensive, and it is impossible to equip each tunnel excavation surface with a Scanner, but also need multiple software to get the required result data

Moreover, in practical application at present, geologists draw geological sketches with naked eyes on the excavation surface. This method has relatively large human errors; Timely adoption of sealing measures for the face and rear support will cause serious construction accidents, affect the progress of the project, and also bring potential risks to the life safety of construction workers. Very important

Images