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为了计算矿床储量,开发了一个非常实用的GEOSTAT程序包,它可用于矿床统计参数和地质统计参数的计算,并可借助于克里格法进行储量估计。通过对毛巴赫(Maubuch)铅-锌矿床按1953年的地质条件进行储量计算的实例,说明了该程序包的可用性。到1953年为止的勘探钻孔,部分是由地表钻至矿体下盘,部分是由两个地下水平向上钻至矿体上盘。将这些钻孔数据汇总成一个数据文件,并假设没有其它可用于计算的更进一步的资料。由于数据的质量不同,以及在地层中数据的分布很不均匀,使得用克里格法对规格为50m×50m的块段进行估计时会得出很高的估计方差。然而,除方差较大外,计算结果是很接近实际的:矿石储量1204万t,品位2.05％Pb、0.81％Zn,金属量分别为铅26.5万t,锌9.6万t。此估计值与矿床开采结束后获得的数据相差不大。
In order to calculate the deposit reserves, a very useful GEOSTAT package has been developed which can be used for the calculation of deposit statistical and geostatistical parameters and reserves estimation by means of the kriging method. The availability of this package is illustrated by an example of a reserve calculation of the Maubuch lead-zinc deposit by geological conditions of 1953. Exploration drilling until 1953 was partly by surface drilling to the lower body of the ore body and partly by drilling up the two subsurface levels to the upper body of the ore body. Summarize these borehole data into one data file and assume there is no further data available for calculation. Due to the different quality of the data and the uneven distribution of the data in the formation, a very high estimation variance is obtained when the kriging method is used to estimate the block size of 50m × 50m. However, except for the large variance, the calculation result is very close to reality: the ore reserves are 12.04 million tons, the grade is 2.05% Pb and 0.81% Zn, and the metal amounts are respectively 265,000 tons of lead and 96,000 tons of zinc. This estimate is comparable to the data obtained after the mining is completed.