Three-dimensional line-selection method for road

Abstract

A three-dimensional line-selection method for a road comprises the following steps of (1) obtaining a DEM and a high-resolution image of a region where the line passes through; 2) carrying out planar initial alignment; 3) carrying out three-dimensional transverse and longitudinal alignment; and 4) carrying out stereoscopic model alignment and determining the final line. Compared with the prior art, the method has the beneficial effects that the method can realistically simulate different visions of left and right human eyes by a 3D stereoscopic display equipment during the line-selection process, is more intuitionistic and stereoscopic for watching line selection, refines the arrangements of bridge, tunnel, slide slope, pitch, and the like in the landform, closely combines the road line selection with real three-dimensional landscape, and obtains the line earthwork amount and the engineering cost immediately, thus being beneficial for adjustment after the initial line changes and comparison of a plurality of initial lines, and determining whether the final line is the really economic and reasonable line or not. The method can not only be used for road line selection, but also can be used for line optimization to the traditional method, thus saving the investment of the whole road.

Description

technical field [0001] The invention relates to road line selection, in particular to a three-dimensional road line selection method. Background technique [0002] The existing three-dimensional highway route selection method includes collecting and analyzing relevant data in the route area, preliminarily determining multiple optional routes on a large-scale topographic map, and determining the final route after field survey. This method of road line selection is time-consuming and laborious, and it is impossible to see the three-dimensional images on the ground. To a large extent, it depends on the actual experience and technical level of the line selection personnel. It is not suitable for projects with relatively tight construction schedules and high requirements. In particular, this two-dimensional method for line selection and position selection cannot be coordinated with the actual terrain and landform, nor can it be closely integrated with actual conditions such as ge...

AI Technical Summary

Problems solved by technology

This method of road line selection is time-consuming and laborious, and it is impossible to see the three-dimensional images on the ground. To a large extent, it depends on the actual experience and technical level of the line selection personnel. It is not suitable for projects with relatively tight construction schedules and high requirements.

In particular, this two-dimensional method for line selection and position selection cannot be coordinated with the actual terrain and landform, nor can it be closely integrated with actual conditions such as geological disasters. Due to the small number of sampling points, the calculation of the amount of earthwork cannot guarantee accuracy at all, and it cannot be done immediately. Obtaining the amount of earthwork and project cost of the route is not conducive to the adjustment after the change of the initial route selection, and is not conducive to the comparison of multiple preliminary route selections. It is difficult to determine that the final route is a truly economical and reasonable route.

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