Method for monitoring and measuring full section of tunnel through three-dimensional laser

Abstract

The invention relates to a method for monitoring and measuring a full section of a tunnel through three-dimensional laser, and belongs to the field of tunnel engineering construction monitoring. The method comprises the following steps of: arranging target points in a tunnel to be measured according to a requirement; determining whether to adopt one-station scan or multi-station scan according to the monitoring length of the tunnel; erecting an instrument at a proper position and scanning the full section of the tunnel; after the scan is finished, importing data into a computer; registering point cloud data acquired through the scan to generate a three-dimensional model by applying three-dimensional data processing software; and generating a comparison model by combining a previous three-dimensional model for the same tunnel at different time, and selecting a specific section and characteristic points to generate a variation analysis chart and a variation analysis sheet for a corresponding position. By the method, the full section of the tunnel is monitored in real time, the speed and accuracy of monitoring and measuring work are improved, manpower and material resources are saved, the speed and quality for monitoring and measuring the tunnel are improved, and reliable guarantee is provided for tunnel engineering construction.

Description

technical field [0001] The invention relates to a measurement method, in particular to a tunnel full-section three-dimensional laser monitoring and measurement method, which is applicable to the monitoring and measurement of clearance changes in tunnel construction, and belongs to the field of tunnel engineering construction monitoring. Background technique [0002] my country is a mountainous country, and tunnels account for a large proportion of the construction of railways and highways in mountainous areas of our country. At present, more and more new Austrian methods are used in tunnel engineering in my country. The main feature of building tunnels with new Austrian methods is to monitor the dynamics of the tunnel surrounding rock after excavation through many measurement methods, and use them to guide tunnel support. Design and construction of protective structures. As an important part of NATM tunnel construction, the accuracy and timeliness of tunnel monitoring and me...

AI Technical Summary

Problems solved by technology

However, due to the low measurement accuracy of level gauges, steel hanging rulers, and convergence gauges, they are greatly affected by tunnel construction, and are likely to cause obstacles to tunnel construction, and the workload of data storage, transmission, processing, and analysis is heavy, and engineering applications are inconvenient.

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