计算机模拟地质化验室分样及取样常数Ks的估算

提出了计算机模拟地质化验室取样过程,考察取样误差与取样量、样品粒度之间关系,并估算取样常数.实验所得的误差与取样量之间的关系与Ingamells的取样方程一致,取样常数及取样常数和样品粒度关系式也与Ingamells推导的相符.由于计算机模拟是一颗颗取样,不用预设分布模式,不存在分析方法误差和分样操作误差的叠加,误差完...

Computer simulates Sampling in Geo-Laboratory and the Evaluation of the Sampling Constant Ks

It introduced, in this paper, a computer procedure to simulate the sampling processes in geo-laboratory.to study the relations among sampling weights, grain sizes and variances of samples for analysis. The simulating studies showed that the products of relative variance and sampling weight are a constant, this is consistence with Ingamells Sampling Equation, and the constant is the Ingamells Sampling Constant, Ks .The studies showed too that as Ingamells had reduced the Ks calculated formula, the Sampling Constant, Ks is proportional to Cubic of grain size. Because in simulating ,samples were drawn from their mother samples by counting grains one by one, they need not any presupposition of distribution model. and the resulted errors did not contain the contributions from analytical step and sample preparation, errors came from the heterogeneity of samples only. Moreover computers operate more quickly and are convenient to alternate parameters, these made simulations are closer to reality of samples.