北塘水库库底地层渗透系数的随机特性分析  

Analysis on the Stochastic Characteristic of the Hydrauic Conductivity of Bottom Stratum,Beitang Reservoir,Tianjin City

作　　者：束龙仓[1] 李伟[1] 

机构地区：[1]河海大学水资源环境学院,南京210098

出　　处：《吉林大学学报（地球科学版）》2007年第2期216-220,共5页Journal of Jilin University：Earth Science Edition

基　　金：水利部科技创新项目(SCX2003-05);河海大学院士基金

摘　　要：为研究渗透系数的随机分布特征,以滨海平原水库也是南水北调调节及事故备用水库的北塘水库库底地层为研究对象,通过野外取样、室内达西渗透实验和颗粒分析实验等手段,获取了库底地层渗透系数的两组数据及其空间分布,借助于SPSS软件的P—P图以及单样本K-S检验,对渗透系数的空间随机分布进行了分析。结果表明,与正态分布相比较,北塘水库库底地层渗透系数更接近对数正态分布,这为库区渗漏量计算的可靠性分析、库底沉积物渗透系数的空间变异特征分析等奠定了基础。In order to indicate the stochastic distribution characteristic of hydraulic conductivity, the bottom stratum of Beitang reservoir, which is a coastal reservoir and a regulating ~ stand by reservoir of South to North Water Diversion Project, was chosen as a case study. By using field sampling, simple Darcy infiltration test and grain size distribution analysis in laboratory two series of the hydraulic conductivity and its spatial variation were analyzed.. With the help of the P-P plots and Kolmogorov- Smirnov test of the SPSS software, the hydraulic conductivity for spatial stochastically distribution was analyzed. The result indicates that the hydraulic conductivity follows the lognormal distribution much better than normal distribution. It is the basis of the reliability analysis of water leakage from the reservoir and spatial variation characteristic of hydraulic conductivity.

关 键 词：渗透系数 空间随机分布 对数正态分布 SPSS 

分 类 号：P641.2[天文地球—地质矿产勘探]