Study On Calculation Method And Application Of Earthwork Quantity Of Approach Road Of Hydropower Station Based On DEM

With the rapid development of China’s water conservancy infrastructure construction,water conservancy facilities with a series of comprehensive benefits,such as flood control,power generation,water storage and irrigation,have made great contributions to the improvement of people’s livelihood and social progress in China.There are also many problems with the prosperity and development of water conservancy industry.As a basic project in water conservancy project construction,the amount of earthwork obtained by the traditional calculation method is often too large,which leads to unreasonable cost estimation,excessive capital investment and serious waste of resources.Therefore,the research of earthwork calculation method has important theoretical significance and application value.Aiming at the problem that the result of the traditional earthwork calculation method is too large and the accuracy is low,this paper introduces the digital elevation model(DEM)to design and implement the earthwork calculation method,in order to explore a new earthwork calculation method and reduce the calculation value of earthwork.This paper is divided into three parts: theory introduction,algorithm development and experimental comparison.Firstly,the DEM model foundation and the basic theory of earthwork calculation are introduced,and the data organization mode,characteristics and advantages of DEM model are analyzed.The advantages and disadvantages of the section method,grid method and DTM method are understood,which lays a solid theoretical foundation for the subsequent algorithm design and development.The second is the algorithm design and development of this research,which is also the core part of this paper.For the main influence factors of road conditions are analyzed,and then combined with the professional knowledge and the DEM model of road design,according to road conditions calculation inaccurate problem,put forward to grid computing area,based on the digital elevation model,to road transverse and longitudinal slope,slope ratio,right design elements for the control parameters,such as road conditions calculation model is set up,And combined with computer programming and other related technology to complete the algorithm development;Finally,taking the approach road of a hydropower station as the application object,the calculation method designed is applied to the actual work to test its related functions.The result proves that the earthwork calculation method designed in this paper can adapt to the complex construction environment of hydropower station,The accuracy of earthwork calculation is improved,which provides a new idea for the accurate calculation of earthwork quantity.