摘要
岩土参数的最重要性质是具有复杂的空间变异性和明显的不确定性.本文从分析岩土参数空间变异特点出发,将岩土参数视为具有随机性与结构性特征的区域化变量,运用地质统计学的理论和方法,给出了刻画岩土参数空间结构性的数学模型,并且提出了评价岩土参数空间变异性的方向综合变异指标D_(vo)实践表明,区域化变量理论和地质统计方法能够弥补经典概率统计方法在评价岩土参数变异性方面的不足之处,从而对岩土参数空间变异性作出更切合实际的分析与评价.
The most important characters of parameters of rock and soil are having the complicated spatial variabilities and obvious uncertainties. Proceed from the characteristics in spatial variance of the parameters, this paper regards the parameters of rock and soil as regionalized variables which have the characters of random and structure. Applying the theory and method of gcostatistics, the mathematical model which is used to express the spatial structure of the parameters as well as the directional synthetic variance index of the spatial variabilities of the parameters are presented. Practice shows that the theory of regionalized variables and geostatistical analysis can fill up a congenital deficiency of the classical statistics in evaluation of variability of the parameters, thus bringing into more practical and rational analysis and evalution of the spatial variability of the parameters of rock and soil.
出处
《土木工程学报》
EI
CSCD
北大核心
1995年第6期43-51,共9页
China Civil Engineering Journal
