Model establishment method adapting to river section

Abstract

A method for establishing a model adapting to a river channel section comprises the steps of generating interpolation points, conducting linear interpolation according to node coordinates, and using the interpolation points to approximately replace a curve; section line selection: uniformly taking points X1 to XN on the left water line, uniformly taking points Y1 to YN on the right water line, making a vertical line from X2 to the center line to intersect with the right water line to form an X2 reference section line, making a vertical line from Y2 to the center line to intersect with the left water line to form a Y2 reference section line, and selecting a first measurement section line of which two ends do not exceed the river section from the X2 reference section line and the Y2 reference section line; and section line optimization, wherein the distance LN between the adjacent section lines is measured, if the LN is smaller than a set value, the area is a dense area, and the two ends of the dense area are expanded into optimized areas during optimization. According to the method, each section line is independently generated according to the given water edge and the central line of the river channel, so that the section lines can adapt to the water edge, and the uniform distribution of the section lines in the river channel is ensured.

Description

technical field [0001] The invention relates to a method for establishing a section model, in particular to a method for establishing a section model adapted to a river course. Background technique [0002] Channel section line is the necessary data for water channel topographic survey. The current section layout algorithms mainly include interpolation method, center line method, and parallel line method. For straight rivers, these algorithms have little difference and can achieve better section layout effects, but for curved rivers, the effect is less Unsatisfactory. The interpolation method requires a lot of manual intervention to achieve better results, the centerline algorithm cannot strictly control the distance between the edges of the section, and the parallel line algorithm is not applicable at all. [0003] The layout of channel section lines has always been a basic subject of channel research. At present, the topographic survey of waterways basically adopts the ...

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Problems solved by technology

It works well in straight rivers, but not in continuous curved rivers

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