基于GIS的水文地质空间信息系统研究与应用

Research and Applications of Hydrogeological Spatial Information System Based on GIS

以区域水文地质信息化与空间分析为目标,以GIS软件ARC/INFO为平台,开发了以水文地质空间数据库为基础,以应用模型体系为支撑的水文地质空间信息系统。以中国西部典型区域的水文地质实际勘查资料为基础,对系统的功能及稳定性进行应用与验证。结果表明:系统具有速度快、准确性与自动化程度高、动态性与可重复性强和可视化程度高等优点,可极大提高水文地质空间分析的有效性、可靠性以及水文地质工作效率,实现基于GIS环境下的地下水预测、模拟、分析与评价的一体化。

Hydrogcological Spatial Information System （HSIS） is developed based on ARC/INFO. It is founded on hydrogeological spatial database and supported on spatial application model system which consists of 23 models those belong to 4 classes including spatial statistic analysis, quantity calculation and potentiality analysis of groundwater, groundwater numerical simulation and synthesis evaluation. HSIS is composed of spatial, database management module, model management module, spatial analysis module is most im portant in HSIS. It is the integration of GIS foundational spatial analysis methods such as overlap analysis,buffer analysis, 3D analysis on various spatial information of hydrogeology unit in the survey area, and hydrogeology theme analysis methods including statistic analysis, groundwater quantity calculation, resource evaluation and potentiality analysis, numerical simulation analysis, hydrogeology eco-environment synthesis evaluation and＇analysis. It can be realized that analysis, predication, simulation and evaluation on groundwater are incorporate. The spatial analysis sub-system also offers a significant approach for real time and dynamic analysis of groundwater system. Then the system functions and stability are applied and validated by using the practical exploration hydrogeological data of typical region in western China.The applications include hydrogeology spatial information overlap analysis, precipitation series daturn frequency spectra analysis, the statistical analysis among hydrogeology elements, hydro-chemistry classification in groundwater and groundwater quality assessment, groundwater resource assessment and potential analysis, numerical simulation ar.d geologic ecoenvironment assessment etc. The application results show that this system greatly improves the validity and reliability of hydrogeological spatial analysis, as well as the feeiciency of hydrogeological jobs. It also realizes the integrality of predicting, simulating, analyzing and evaluating groundwater based on GIS.