Rock block stability fast evaluation method based on three-dimensional outdoor scene and stereographic projection

Abstract

The invention relates to field of engineering geological exploration analysis and discloses a rock block stability fast evaluation method based on a three-dimensional outdoor scene and stereographic projection. According to the rock block stability fast evaluation method based on the three-dimensional outdoor scene and the stereographic projection, geological investigation personnel versatilely analyze blocks likely to slip conveniently and rapidly in the field environment, visually make an evaluation for a side slope stability state, and qualitatively analyze the stability situation after personnel excavate the side slope at the same time. The method comprises the steps of 1, collecting rock mass structure geological data information in an engineering area; 2, introducing the geological data information to a three-dimensional outdoor scene platform to form three-dimensional terrain; 3, determining a natural rock side slope to be analyzed; 4, in the range of the natural side slope, screening out all structural plane data information; 5, cutting blocks in the three-dimensional outdoor scene platform; 6, generating a side slope stability analysis report according to a polar stereographic projection method; 7, according to a construction scheme, inputting artificial side slope data; 8, according to the polar stereographic projection method, natural side slope data and artificial side slope data, generating a stability report.

Description

technical field [0001] The invention relates to the field of engineering geological survey and analysis, in particular to a method for quickly evaluating the stability of rock blocks based on three-dimensional real scene and stereographic projection. Background technique [0002] The stability analysis of rock slope blocks has always been an important basic work in geological engineering and rock engineering [1]. The deformation and failure of slope blocks are mainly controlled by various structural planes developed in the rock mass. Structural plane refers to a planar geological interface with a certain direction, large extension and small thickness in the rock body, including material interfaces and discontinuous surfaces. According to the principles of geomechanics, the main structural planes of rock masses such as fissures, layers, and faults can be divided into several groups that are roughly parallel to each other, and some of the intersecting structural planes cut so...

AI Technical Summary

Problems solved by technology

Pang Qingshan [3] and others once invented a stereo projector, which installed Wu's net and transparent paper in a small instrument, which solved the problem that the instrument was not easy to carry in field surveys.

However, its use method still belongs to the traditional hand-drawn projection, and the drawing process is relatively cumbersome and the accuracy is not high. The realization method is to display the previous projection method through a projection sphere instead of a plane, increase the expressiveness through computer programming, and study the stability of the block on this basis

However, this method is not combined with a three-dimensional real-scene platform, lacks real-scene effects, has a single function, and is not very operable

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