This paper extends some functions of the system of map algebra, brings forth a method for inundation simulation and analysis by means of map algebra, sets up an inundation model and realizes it.

• 摘要扩展了地图代数系统的功能，提出了运用地图代数进行洪水淹没模拟与分析的方法，建立了洪水淹没模型，并给出了洪水淹没模拟与分析的实例。