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地质变量是既有随机变化又有趋势变化的随机函数,因此,反映地质变量的变化性质和变化程度时,必须找寻既能反映随机变化又能反映趋势变化的表示方法。本文主要介绍:用变异函数表示地质变量的变化性质。对于其变化程度则用变化程度系数φ=(C_0+0.625C)/α或者相对变化程度系数Vφ=φ/m表示。应用C_0+0.625C计算地质变量的总方差,根据这一总方差计算的变化系数,既能反映随机变化,又能反映趋势变化,这才是比较正确地反映矿体的变化程度。
Geological variables are random functions that have both random and trend changes. Therefore, when reflecting the changing nature and degree of change of geological variables, we must find a representation that reflects both random and trend changes. This article mainly introduces: Using variation function to express the changing nature of geological variables. The degree of change is expressed by the coefficient of variation φ = (C_0 + 0.625C) / α or the relative degree of variation Vφ = φ / m. The total variance of geological variables is calculated by C_0 + 0.625C. The coefficient of variation calculated from this total variance can not only reflect the random change but also reflect the change of the trend, which reflects the change degree of the ore body more correctly.