Approach Road Of Hydropower Project Based On DEM Section Drawing And Analysis Method Research

As the infrastructure of a water conservancy project,hydropower engineering is one of the main sources of people’s electricity consumption,and has become an indispensable strong pillar for the economic and social development of each country.Because hydropower projects are mostly built in mountainous areas with large terrain difference,but there is no road for equipment transportation in mountainous areas,so it is necessary to consider the important factor of road construction at the beginning of hydropower project construction.Drawing road profile can intuitively display the terrain fluctuation of the road area,calculate the road design parameters,and analyze the road profile.Therefore,the drawing of road profile has deep theoretical significance and practical application.In view of several problems,such as the shortcomings of the current section drawing method in the process of road design,complex software function of drawing section,too many function class package,and slow file opening.Based on the DEM raster data of the project area,the interpolation spacing and road width are input by the way of humancomputer interaction based on JAVA language,and the raster data is input as a twodimensional matrix code,and the elevation data needed for section drawing is interpolated and calculated.Firstly,the paper consults relevant domestic and foreign literature,it analyzes the research progress at home and abroad,and determines the research ideas and research contents of this paper on this basis.Secondly,the paper analyses the principle of DEM road profile drawing,and then the paper introduces the definition and classification of the profile and the definition and form of Digital Elevation Model(DEM).The principle of DEM-based profile drawing,the algorithm of DEM-based road profile drawing,the algorithm of DEM-based road of profile analysis are proposed.Then on the basis of the principle and method to complete the demand analysis of the system,the introduction of the development environment,the analysis of the design process,and the realization of the section drawing algorithm,finally save the graphics;Finally,taking the DEM grid data of the project area as an example,the coordinates of the road center line are selected,and the mileage file is used as the abscissa,and the elevation value is used as the ordinate to draw the road transverse and longitudinal profile.On this basis,the slope gradient analysis,fill excavation analysis and topography analysis are carried out.