基于ArcGIS和DEM的水文地质分析方法初探

The Preliminary Method Study of Hydrogeology Analysis Based on ArcGIS and DEM

水文分析是由以往的水文资料推算未来极端水文事件发生的概率,为水利部门防洪抗旱提供依据。本文基于DEM数据进行水文分析的原理,以黄土高原陕西杨凌区为例,介绍了使用ArcGIS10.0进行水文地质分析的方法、步骤和流程,分析结果与该区实际情况基本一致。研究内容和结果为水文分析和险情预报提供了帮助和技术支持。

Hydrologic analysis is to calculate the probability of extreme hydrological events in the future by previous hydrological data,and provides the basis for flood control and drought resistance of water conservancy department.Based on the principle of DEM data in hydrological analysis,taking Shaanxi Yangling area on the Loess Plateau as an example,this paper describes the methods,steps and procedure of analyzing hydrogeology using ArcGIS10.0,the analysis results are basically identical with the actual situation.The results for the analysis of the hydrological and danger forecast provides help and technical support.