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地质信息及其表征具有随机不确定性和模糊不确定性,而土体物理力学参数之间又存在着固有的互相关性。通过对地层的已知孔隙率参数进行统计分析,利用Weibull分布模拟孔隙率的空间分布非均质特性,并结合随机中点位移法,模拟非均质地层孔隙结构的空间分布规律,建立了孔隙率的空间分布预测模型。研究建立了地质变量的空间函数关系,结合土性参数之间的相关性,以孔隙率为基本量形成二维地质剖面和三维数字地层,构造面向目标的非均质地层地质模型,探讨了非均质地层物性参数的时空分布特征及其有效描述,对地层局部地质信息的变异和随机性进行精细化描述和预测。
Geological information and its characterization have stochastic uncertainty and fuzzy uncertainty, and there are inherent cross-correlations between soil physical and mechanical parameters. Through the statistical analysis of the known porosity parameters of the strata, we use the Weibull distribution to simulate the heterogeneity of the spatial distribution of the porosity and the random midpoint displacement method to simulate the spatial distribution of the pore structure in the heterogeneous formation, and establish the porosity Rate of Spatial Distribution Prediction Model. The spatial function of geological variables was established. Combined with the correlation of soil parameters, two-dimensional geological sections and three-dimensional digital strata were formed based on porosity, and a geo-target oriented heterogeneous geological model was constructed. Spatiotemporal distribution characteristics and their effective description of the physical property parameters of the homogeneous stratigraphy are used to describe and predict the variation and randomness of the local geological information of the stratigraphic accurately.