A real-time fine assessment device and method for the stability of tunnel working face

Abstract

The invention relates to a real-time fine evaluation device and method for the stability of a tunnel working face. The evaluation device includes: a guide rail, which is installed on the top of the tunnel; a lifting bracket, one end of which is mounted on the guide rail and moves along the guide rail, and the other end is rotatably hung It carries the main body of the device; the main body of the device is provided with a controller, as well as a distance sensor, a dust concentration sensor, a light sensor, an inclination sensor, a light source, a camera and a projection device all connected to the controller. After the lifting bracket carries the main body of the device to the target position , rotate the main body of the equipment to adjust the direction, the light source fills the light of the tunnel working face to be analyzed, collects the image of the working face, obtains the stability analysis result, and projects the stability analysis result to the tunnel working face through the projection device. Compared with the prior art, the present invention has the characteristics of high speed, convenient operation and high degree of visualization.

Description

technical field [0001] The invention relates to the field of geological survey, in particular to a real-time fine evaluation device and method for the stability of a tunnel working face. Background technique [0002] With the rapid development of infrastructure construction in China, the requirements for building tunnels in different regions have become increasingly prominent. However, due to the underdevelopment of technology, engineering cost, heterogeneity, uncertainty, discontinuity of geological conditions, concealment and unpredictability of strata, etc., there is no mature plan for pre-geological Survey to learn more about the complex geology of the tunnel excavation. This is a problem that has always plagued engineers. Accurate and timely acquisition of tunnel face information can re-analyze the geological conditions of the excavation during the construction process, so as to reasonably improve the construction method and support type, which is of great significanc...

AI Technical Summary

Problems solved by technology

[0003] Traditional tunnel face information collection is mainly conducted by geological engineers using tape measure, geological compass and other on-site contact measurements. The results of artificial geological sketches are highly subjective and require high construction experience of geological engineers. At the same time, they are exposed to Under unstable rock masses with rockfalls and rockbursts, it is not only dangerous but also unable to meet the requirements of rapid construction of the project, and the results cannot describe the local stability characteristics of the tunnel working face in detail

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