Primary Research Of Development For Digital Yangtse River In Anhui Province

As "digital earth " theory proposes and the development with the information technology, the tide of digitization has risen in the world, digital country , area, city , digital area and concept of the trade ,etc. are put forward one by one. Some have already, implemented gradually, and have played a more and more important role.Since the foundation of the state, Yangtse River in Anhui section has built large quantities of flood control projects, it is important that the Yangtse River to prevent flood safety. After the big flood of the Yangtse River in 1998, the country invested a huge sum of money to go on except that strengthened by inches; the capacity to prevent floods of river dyke was improved notably. But how is it to completed supervision of flood control project, guarantee the project safe operation to strengthen, become a very urgent problem again.In order to comply with the trends of the times and meet river management's needs, it is very necessary to research and develop the digital information system of the Yangtse River of Anhui (the first stage of the project).The thesis, according to a characteristic of riverway of Anhui, focus on the actual demand of riverway and prevent flood engineering management, put forward how set up in large scale of Anhui segment riverway and flood control project database, start with dealing with the riverway landform mapping , It is carry on many kinds of functions of a software system that can calculate rush&silt of riverway , analysis clino change , river contour line set paint , section set paint , thalweg set paint etc. A lot problem of qualitative analysis that because only can the amount of calculation by handwork is solving.Thesis is make user of virtual reality technology to study, to different to examine underwater topography of time reflect through three-dimension dynamic change river towards course that rush&silt change ocular, and realize along the Yangtse River Anhui section and a certain section going on three-dimension fly, give somebody the feeling on the scene personal. In addition, In the thesis, with barycenter line change to analyse and research the theory of bed development rule, combine GPS real-time location capability to strengthen the Yangtse River pick sand to put forward for the first time.