江垭碾压混凝土坝芯样渗透系数统计特性研究  

Statistical Features of Permeability Coefficients of Jiangya RCCD Core Samples

作　　者：速宝玉[1] 胡云进[1] 刘俊勇 詹美礼[1] 张祝添[1] 

机构地区：[1]河海大学水利水电工程学院,江苏南京210098 [2]珠江水利委员会科研所,广东广州510611

出　　处：《河海大学学报（自然科学版）》2002年第2期1-5,共5页Journal of Hohai University(Natural Sciences)

基　　金："九五"国家科技攻关子题 (96- 2 2 0- 0 1- 0 2- 0 1(3 ) )

摘　　要：首先对江垭碾压混凝土坝芯样室内渗透试验的渗透系数进行统计分析 ,然后对貌似分散的渗透系数数据进行概型分布的严格检验 ,从而揭示了现代正常施工的碾压混凝土坝中的二级配、三级配碾压混凝土和变态混凝土包括各自含层 (缝 )面芯样的渗透系数均符合对数正态分布统计特性 .计算分析表明 ,求得的各种类型碾压混凝土渗透系数的均值、方差及各自的累积概率曲线 ,不但为设计提供了更科学的、概念明确的分析数据 。A statistical analysis is performed on permeability coefficients from laboratory permeability tests on core samples of the Jiangya Roller Compacted Concrete Dam (RCCD). Strict examination of probability distribution reveals that the permeability coefficients for two graded RCC, three graded RCC, and abnormal RCC in modern normal construction of RCCD obey normal distribution. Through calculation and analysis, the mean value, variance, and accumulated probability curves of probability coefficients for different kinds of RCC are obtained. Not only can the results provide scientific and clear data for design, but also provide a scientific quantitative method for quality appraisal of RCCD.

关 键 词：渗透试验 渗透系数 统计特性 碾压混凝土坝 芯样 

分 类 号：TV642.2[水利工程—水利水电工程]