地下水埋藏在地表下的松散沉积地层中，具有水质好的特点，有着极佳的利用价值。根据地下水数据，可以有效了解地下水的变化规律，而地下水数据可视化是呈现地下水水文地质情况、反映监测参数变化情况的主要方法。我国地下水数据可视化尚处于发展阶段，总体上呈现出地下水建模方法落后、监测类数据可视化功能弱、无预警可视化功能的问题。 针对以上问题，运用多种科学可视化技术研究了地下水数据可视化方法。首先，分析了地下水数据源，将该数据分为地质数据和监测数据两类。其次，根据地下水地质数据，分别利用三角网、改进的三角网和规则矩形网方法对三维地质层面进行建模，通过分析对比其建模结果，选取最适用于地下水数据的层面建模方法。进而根据地质数据分布稀疏的特点，提出了规则网格三棱柱体元构造方法，建立了地下水三维地质体模型。再次，根据地下水水位监测数据，构建了基于规则三角网的等水位线图，并且在地下水三维地质模型中生成三维等水位面，达到水位信息、三维地质模型一体化动态模拟与可视化显示的目标，从而实现了地下水实时水位监测可视化方法。最后，为了预防地下水资源过量开采，将图像边缘检测方法进行改进，结合水位数据的变化规律，提出了基于水位时序变化的局部极值查找算法。该算法通过构造水位时序变化曲面模型，并在其中搜索局部极值，确定水位变化异常的区域。然后结合实时水位监测可视化方法实现预警提示，从而达到地下水实时水位预警可视化的目的。 本文以Visual Studio 2010和OpenGL为开发工具，实现了地下水数据可视化方法，并以陕西省榆林市定边县的地下水实际数据为例，验证了本文中所提数据可视化方法是可行、有效、实用的，为地下水可视化监测与安全管理提供了可靠的方法。

The groundwater with the characteristics of good water quality and excellent use value, is buried in loose sedimentary strata that beneath the subsurface. The groundwater data are used to find out the groundwater's changing regularity, and the groundwater data visualization is the primary method to present the groundwater hydrogeological conditions and reflect the monitoring parameters’ changing conditions, but it is still in the development stage, with the fall behind groundwater modeling methods, weak monitoring data visualization capabilities, the lack of warning visualization capabilities and other issues. To solve the above problems, through using a variety of scientific visualization technique to study the groundwater data visualization methods. Firstly, analyzed the groundwater data sources and divided into two types of geological data and monitoring data. Secondly, used triangulation network, improved triangulation network and regular rectangular mesh method for geological layer modeling according to the groundwater geological data, after contrastive analyzed the reconstruction layer model, and select the best modeling approach. Due to geological data sparseness, this paper proposed a regular grid triangular prism voxel space construction method, achieved a three-dimensional groundwater geological modeling, verified the correctness of the model construction method. Then according to the groundwater level data achieved a level contour drawing and filling to form a level contour map based on triangulation mesh method, and implemented the generation the level is surface of three-dimensional groundwater after the construction of the three-dimensional groundwater geological model, thus realized the effective visualization of groundwater level data in the three-dimensional groundwater geological model, achieving the goal of groundwater real-time level data’s dynamic monitoring. Finally, improved the image edge detection method, combined with the feature of level monitoring data realized the partial extremum search algorithm based on level timing changing. Through the partial extremum search on the level changing conditions, and real-time level monitoring visualization method, giving warnings for the level region that exceed normal changing indicator, therefore realized the warning visualization of groundwater real-time level. In this paper, Visual Studio 2010 and OpenGL are used as development tools to realize the groundwater data visualization methods. Take the actual data of Dingbian County, Yulin City, Shaanxi Province groundwater hydrologic long-observation holes for example, verified the data visualization methods used in this paper is feasible, effective, and practical, provided a reliable method for groundwater monitoring and security data management.