摘要:
文章以MAPGIS65为基础平台,采用Visual C#编程语言进行二次开发,利用组件式开发技术,建立地下水水化学辅助分析信息系统(EKGHAS),在实现基本数据管理、图形显示及查询的同时,实现等值线生成和叠置分析等空间分析功能,绘制相关图件。然后,将之用于鄂尔多斯盆地洛河组地下水水化学类型的分区研究,结果显示该区域水化学类型分布与当地水动力场分布所反映出的地下水补、径、排规律基本一致,表明该GIS系统能满足对地下水水化学场研究所需数据的实时、可视化管理需要。 更多还原
Abstract:
This paper involves the introduction of the Groundwater Hydrochemistry Assistant Analysis System and its application in the Ordos Basin.According to Component Object Model(COM)technology and secondary development of C# language,the system is designed based on MAPGIS 65.The system can implement not only basic database management,figure display and query but also perform isoline drowing.It can draw the contour map of the total dissolved solids(TDS)and anion concentrations and cation concentrations.It can also carry out superposing analysis function to draw the map of hydrochemical types.Moreover,the system of the secondary development has function that stores ultimate figures into the spatial database.It is not steady but flexible at any moment.It can discretionarily superpose other figure layers that forms synthesis figures.The multi-layer maps can supply accessorial support for the study of zones of hydrochemical types and occurrence of groundwater hydrochemistry.The Ordos Basin covers parts of Shaanxi,Gansu,Shanxi,Ningxia and Inner Mongolia.The basin lacks significant surface water resources and the groundwater quality is poor.Among the water-bearing formations,the Luohe formation has the most extensive distribution which can produce the most groundwater.The groundwater quality of the Luohe formation is very complex.Exemplifying the study of the hydrochemistry type of groundwater in the Luohe formation and performing validation in practice,the system is practical and valuable.As a result,the distribution of hydrochemical types in groundwater in the Luohe formation is consistent with the hydrodynamic field.The system is useful to study the recharge,runoff,and discharge conditions of the groundwater and also useful to evaluate sustainable utilization of groundwater resources in the Ordos Basin.
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