摘要
文中运用地质数学中非平稳区域化变量的理论,对研究区内含水层系统的渗透系数K进行了结构分析,找出了它的主变异方向和变异程度,并应用泛克立格法对渗透系数K进行了最优估计,进而给出了它的空间变异分布图和参数分区图。
The statistical regression method of local adjacent region by which the authors have approximately calculated the spatial drift of every sampling point Xi of the unstationary regionalized variable Z(x) is presented in this paper on the basis of a brief introduction of the universal kriging estimation model theory of geostatistics. According to it, the authors have made a structural analysis on the aquifer hydraulic conductivity (HC) K in the Tongliao-Herxi area. The analysis gives us:(1) The directional variabilities of HC K in a large area are quite different. It is small from north to south and large from east to west.(2) The variability of HC K in a local range increases linearly along with increasing distance h.The values of HC K at 1089 points located in the study area have been estimated by the universal kriging method and the estimation variance has been given. According to these the maps drawn are: the contours of HC K, the spatial division of HC K and the distribution of estimation variance.The contours of HC K indicate that HC K decreases gradually from east to west and has unusual changes in some local areas. The drift and abnormal change values of HC K of an aquifer system have been separated using the universal kriging method. The drift value contours and residual value contours of HC K have been drawn too. The residual value contours of HC K shows that the HC K has significant abnormal changes in the north western part of the study area and west of the Minzhe, Fengtian and Melimiao Reserviors. These are in agreement with local basins located in the Kailo basin.
出处
《地质学报》
EI
CAS
CSCD
北大核心
1994年第4期358-367,共10页
Acta Geologica Sinica
关键词
含水层
渗透系数
空间变异性
regionalized variable, variogram, geostatistics, spitial variability
