Method for evaluating construction quality of tunnel drilling and blasting based on three-dimensional laser scanning

Abstract

The invention relates to a method for evaluating the construction quality of a tunnel, and discloses a method for evaluating the construction quality of tunnel drilling and blasting based on three-dimensional laser scanning. The method comprises the following steps of: acquiring data by adopting a tunnel data acquisition module at first, and then processing the acquired data by adopting a tunnel data pre-processing module, building a tunnel three-dimensional model building module according to the processed result, performing post-processing by adopting a tunnel three-dimensional model post-processing module, and finally, evaluating the result by adopting a tunnel drilling and blasting quality evaluation module. The method discloses by the invention has the advantages of being wide in measurement range, strong in applicability, high in automation degree, and good in reliability.

Description

technical field [0001] The invention relates to a method for evaluating tunnel construction quality, in particular to a method for evaluating tunnel drilling and blasting construction quality based on three-dimensional laser scanning. Background technique [0002] The construction quality of tunnel drilling and blasting is related to the safety and benefit of the project. For the deep and long tunnels constructed by the drilling and blasting method, the surrounding rock is a heterogeneous anisotropic discontinuity. Most of the existing blasting design parameters are determined based on empirical formulas and engineering analogy experience data, and the problems caused by random adjustment of blasting parameters It is more prominent, the quality of on-site blasting construction is not optimistic, especially the over-under-excavation of tunnels is common, if not controlled, it will cause huge losses to the tunnel construction. [0003] The traditional tunnel drilling and blas...

AI Technical Summary

Problems solved by technology

[0005] Chinese patent CN102136155A is a vectorization method and system based on three-dimensional laser scanning data. The method steps mainly include region segmentation, boundary extraction, boundary fusion and boundary correction. It does not have the function of evaluating the quality of tunnel construction and cannot be used for tunnel drilling and blasting. Construction Quality Evaluation

This method also cannot be used for the quality assessment of drilling and blasting construction in tunnel engineering, and can only solve the geological survey and rapid geological cataloging of high and steep slopes.

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