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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 property of geotechnical parameters is its complex spatial variability and obvious uncertainty. This paper starts with the analysis of the spatial variability of geotechnical parameters and considers the geotechnical parameters as a regional variable with random and structural characteristics. Using the theory and method of geostatistics, a mathematical model describing the spatial structure of geotechnical parameters is given, and a directional comprehensive variation index D_(vo) for evaluating the spatial variability of geotechnical parameters is put forward. Practice shows that the theory of regionalization variables Geostatistical methods can make up for the deficiencies of classical probability statistical methods in evaluating the variability of geotechnical parameters, thus making a more realistic analysis and evaluation of the spatial variability of geotechnical parameters.