基于MATLAB三维数字地形图在库区冲淤分析中的应用

Application of three-dimensional digital map to analysis of reservoir's erosion and deposition based on MATLAB

根据现状大多数水库库区水下地形复杂、缺乏详尽地形资料的特点,提出了基于MATLAB的两种地形高程插值方法,并阐述了综合运用这两种插值方法制作库区三维数字地形图及误差分析方法.通过应用实例分析结果表明,这种方法适合现状水库地形测量资料,操作简单,程序实现容易,所得三维数字地形图可以满足工程上对水库冲淤分析计算的精度要求.

As most of reservoir landform is very complex and we are lack of the detailed information about them, so this paper referred two inserting value methods based on MATLAB, and explained how to apply these methods to make the digital relief map. An error analytical method also is referred. The application instance indicates that these methods are suitable for the present situation in most of reservoirs in China. They are simply operated and can be easily done in program. The three-dimensional digital relief map made by these methods is satisfied the precision for analyzing the reservoir＇s erosion and deposition.