用地质统计法优选煤田勘探程度的探讨

Discussion on optimizing coalfield exploration degree by geostatistics

利用地质统计法在求得最佳无偏估计量的同时给出估计方差,而估计方差是勘探网型、储量(煤质)的函数,即建立起煤层变化性、勘探工程、储量精度三者之间的定量关系。以胜利一号露天矿勘探资料为实例,用计算机模拟网度由疏而密优选勘探过程的方法,可求出各种网型下所获得的勘探精度、勘探程度、储量(煤质)保证率及备用系数,为采矿设计提供矿床地质条件的可靠性论证。

This article uses the geostatistics to obtain the best unbiased estimator and the estimated variance.The estimated variance is a function of the type of exploratory grid and reserves(coal quality),which establishes the quantitative relationship between the coal seam variability,exploration engineering,and reserves accuracy.Taking Shengli No.1 Open-pit Mine exploration data as an example,we use computer to simulate the method of varying exploratory grid from sparse to dense during the exploration process,and calculate the exploration accuracy,degree of exploration,reserves(coal quality)guarantee ratio and reserve factor of mine reserves under various types of grid,which provide reliability proof of the geological conditions of the deposit for mining design.