Three-dimensional parametric modeling method applied to arch dam slope excavation

Abstract

The invention provides a three-dimensional parametric modeling method applied to arch dam slope excavation. The method comprises the following steps: firstly, establishing an arch dam base plane geometric feature part by taking an arch dam base plane curved surface as an input condition; then, the included angle of the upper-stage riding track line serves as an arrangement parameter, the slope height, the slope coefficient and the riding track width meeting the slope stability requirement serve as slope parameters, and the slope riding track lines of all stages are arranged from the dam bottom to the dam top in the direction intersecting with the terrain as soon as possible under the condition that the slope stability is guaranteed; an upstream right slope riding track slope surface assembly, an upstream left slope riding track slope surface assembly, a downstream right slope riding track slope surface assembly and a downstream left slope riding track slope surface assembly are established; then building a slope surface and an opening line of the whole riding track; and finally, calculating to generate a three-dimensional model of the excavated slope surface. According to the method, the modeling speed is high, the established model is high in parameterization degree and can be quickly and dynamically modified, the time for design modeling and modification can be greatly shortened, and the method is extremely suitable for scheme design of arch dam slope excavation.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional digital model construction, and in particular relates to a three-dimensional parametric modeling method applied to arch dam slope excavation. Background technique [0002] Slope excavation is the process of artificially transforming natural slopes, and the principle of less excavation and less disturbance should be followed. The layout of the excavation position of the arch dam slope and the stability after excavation must be considered in the design process of the arch dam , the shape and parameters of the grading are closely related to topography and geology. [0003] The arch dam slope excavation design was previously arranged and drawn on the two-dimensional CAD according to the geographical environment, and the parameters such as the layout of the horse track and the slope ratio coefficient were adjusted according to the geological conditions of the section. The correlation is not ...

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Problems solved by technology

[0004] In order to solve the problems of complex and time-consuming operation, low parameterization and difficult modification of the arch dam slope excavation design model described in the background technology, the present invention provides a three-dimensional parameterized model for arch dam slope excavation. model method

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