渗流弥散的空间变异性及空间插值方法的比较研究

水质模拟与预测是评价和保护地下水工作中不可或缺的重要程序。由于地下水的储藏与运行特性及实际条件的限制,人们在对其进行观测时往往只能得到有限的监测结果,因此需要借助已知点信息来对未知点水质空间分布特性进行估计。现行的空间变异性估计方法很多,使用何种方法可以获得对渗流污染物运移空间变异性的最优估计,成为研究的重要课题。本研究选取反距离加权法、趋势面法、普通克里格法以及方位-分维法作为研究对象,用其对所渗流弥散实验的监测样本在不同的样本密度下进行空间插值,通过各种方法的估值精度的对比,对其在渗流污染物空间估计中的的估计效果做出评价。

The Comparative Study of the Spatial Variance Estimation and Interpolation Methods of the Seepage Dispersion

The simulation and prediction of the water quality is one of the most important programs to evaluate and protect underground water. However, due to the character of the storage and running of the water and the limitation of the observation methods, researchers can only retain limited observing reults. Therefore, estimation methods are required to characterize the features of the spatial distribution of the water. Since there exist a variety of methods of spatial variance estimation, it has become one of the very important subjects of this field to study the capabilities of these existing methods in the optimized estimation of the spatial variance of the seeping pollutions.