摘要
水位变动带综合给水度在水资源评价中是一个十分重要的参数。对于大区域含水层组来讲,手工计算是相当困难的。水文地质数据库和现代软件工具为我们解决这一问题提供了方便。本文探讨了应用MapGIS软件和VB语言编程从地下水数据库中提取钻孔的水文地质试验数据、岩性、厚度、地下水位等资料,综合分析和计算水位变动带综合给水度的方法;并将该方法应用于“华北平原地下水资源可持续利用调查评价”项目的水资源计算。在该项目中,针对地下水超采引起的巨厚水位变动带,以地下水数据库为基础,用MapGIS的空间分析功能和VB语言编程来处理和分析提取的数据资料,从而求得水位变动带综合给水度和区域综合给水度,并编制了“华北平原地下水位变动带给水度分布图”。
General specific yield is a very important parameter in water resources assessment. However, it is too difficult to calculate it in handwork in calculation of large district where water stage has descended extensively. It is convenient to use hydrogeologic database and modem software tools in solving this problem. This paper introduced a method of calculating the general specific yield of water stage fluctuation belt by using MapGIS and VB to extract hydrogeologic test data, lithology, thickness and water table from the hydrogoologic database, which has been applied for the project of investigation and assessment of the groundwater resources for sustainable utilization in the North China Plain. In this project, in accordance with the great thickness of the water stage fluctuation belt resulted from groundwater overdrafting, based on the hydrogeologic database, the general specific yield of the fluctuation belt were obtained and the distributed graph of general specific yield in the North China Plain was made with MapGIS and VB program.
出处
《水文》
CSCD
北大核心
2007年第3期35-38,共4页
Journal of China Hydrology
基金
国土资源大调查项目"华北地下水可持续开发利用前景(20023064)"
"华北平原地下水资源可持续利用调查评价(1212010430351)"
关键词
给水度
MAPGIS
数据库
水文地质单元
水位变动带
general specific yield
MapGIS
database
hydrogeologic element
fluctuation belt of water stage
