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本文运用多种地质统计学方法分析了岩石节理的空间变化性,并建立了节理方位、密度和长度参数的完整模型、通过对这些典型参数空间变化性的量测以及对交差图的分析,按无偏最小估计方差(即克立格方差)估计的克立格方法建立模型.运用普通克立格法建立局部块段节理的确定性模型以服务于某露天矿的论证,而且采用这种确定性模型能够进行边坡稳定性、块度和水力渗流系统等各种岩土工程分析.用克立格估计值和实际量测值之间的对比来检验岩体节理模型,其结果是肯定的.同时还发现节理参数的局部统计特征与其整体统计特征明显不同.由于岩体节理在任何岩土工程分析中都起重要作用,故任何岩土工程分析都必须进行局部模型分析.
In this paper, a variety of geostatistical methods are used to analyze the spatial variability of rock joints, and a complete model of joint azimuth, density and length parameters is established. Through the measurement of the spatial variability of these typical parameters and the analysis of cross-graphs, A Kriging method for estimating unbiased minimum estimated variance (ie, Kriging variance) is used to establish a model. A deterministic model of local segmented joints is established using the ordinary Kriging method to serve the demonstration of an open-pit mine, and this determination is used. The model can be used for various geotechnical engineering analyses such as slope stability, block size, and hydraulic flow system. The rock joint model is verified by comparing the Kriging estimate with the actual measured value. The result is positive. At the same time, it is also found that the local statistical characteristics of joint parameters are significantly different from their overall statistical characteristics. Since rock joints play an important role in any geotechnical engineering analysis, any geotechnical engineering analysis must perform local model analysis.