摘要
本文首先讨论了对数正态分布及三参数对数正态分布理论,然后重点研究了对数正态克立格法。在分析了无偏条件及最小估计方差之后,给出了对数正态克立格法方程组及对数克立格方差。克立格权系数λ_a即为该方程组的解。据此,可以估计矿床中每一块段的克立格估值Z_v,该估值是具最小估计方差的无偏线性估计量。该法已用于一个铁铜矿床的储量计算。
A theoretical study of the lognormal distribution and the three-parameters lognormal distribution are presented. The emphasis is on the study of lognormal kriging. The lognormal kriging systems and logarithmic kriging variance are established after non-bias condition and minimum estimation variance are studied. The kriging weights λα are solutions to the kriging systems. The kriging estimator Zv of each block of a deposit can be estimated. Kriging estimator is the unbiased linear estimator with minimum estimation variance. The method is illustrated application to ore reserve estimation of a iron-copper deposit.
出处
《北京科技大学学报》
EI
CAS
CSCD
北大核心
1989年第5期391-398,共8页
Journal of University of Science and Technology Beijing
关键词
对数正态分布
克立格法
地质统计学
geostatistics, kriging, lognormal distribution, variogram, mini-mum estimation variance, unbiased estimator
