A Method of Engineering Geological Surveying and Mapping Based on 3D Laser Scanning

Abstract

The invention relates to a geological mapping technology, discloses a three-dimensional laser scanning-based engineering geological mapping method, and solves the defects of low efficiency, low precision and large later workload in a measurement scheme of a geological spatial location in the traditional geological mapping process. The method comprises the following steps: a, obtaining point cloud data and geological object image information in a three-dimensional laser scanning manner; b, inputting the point cloud data and the geological object image information into a computer, building a three-dimensional geological model containing the image information; c, describing the geological feature points, geological feature lines and geological feature surfaces according to the geological characteristics on the three-dimensional geological model, and calculating geological attributes; d, inputting the obtained geological feature points, geological feature lines, geological feature surfaces and geological attributes into a management database; e, finishing geological information inputting and inquiring and geological map generation functions according to the data in the management database. The three-dimensional laser scanning-based engineering geological mapping method is applicable to mapping of an engineering geological body.

Description

technical field [0001] The invention relates to geological surveying and mapping technology, in particular to an engineering geological surveying and mapping method based on three-dimensional laser scanning. Background technique [0002] Engineering geological surveying and mapping is one of the most important and basic surveying methods in engineering geological surveying. It uses geological and engineering geological theories to observe and describe in detail various geological phenomena related to engineering construction, so as to find out the construction area in the proposed construction area. The spatial distribution of geological conditions and the internal relationship between various elements are faithfully reflected on topographic maps of a certain scale according to the accuracy requirements, and the engineering geological maps are compiled with the data obtained from engineering geological exploration and tests. [0003] The on-site work of engineering geologica...

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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to propose a method of engineering geological surveying and mapping based on three-dimensional laser scanning, which solves the defects of low efficiency, low precision, and heavy workload in the later stage of the measurement scheme for the spatial position of geological bodies in the traditional geological surveying and mapping process