原位渗水试验数据结果的空间变异性分析

Analysis of Spatial Variability of Insitu Permeation Test's Results

水文地质参数的空间变异性是随机理论研究的基础,而渗透系数是最为重要的水文地质参数。本文将原位渗水试验的数据结果通过ARCGIS平台主要从正态QQPlot分布图、全局趋势性、空间自相关及方向变异三方面进行其空间变异性的分析,结果表明:原位渗水的渗透系数近似服从对数正态分布;原位渗水的渗透由南向北逐渐递减,从东向西变化过程依次为先递减后递增,渗透系数最小的位置偏向东侧;垂向渗透系数K值具有一定的空间相关性,且在西北和东南方向比南北方向更远距离的空间相关性得到的结果对今后确定地下水库人工回灌点的位置具有一定的指导意义。

The spatial variability of hydraulic properties is the basis of scholastic research on groundwater.The hydraulic conductivity is the most important parameter.This paper＇s data adopts the results of insitu permeation test,then analyses its spatial variability from three aspects including normal QQPlot,global trend analysis,spatial autocorrelation and variability of direction,which was based on the plat of ARCGIS.The results have important guiding meaning for determining artificial recirculation point position.