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A Comparative Analysis between Disjunctive Kriging and Ordinary Kriging for Estimating the Reserve of a Mine; a Case Study of Choghart Iron Ore Deposit
| Content Provider | Semantic Scholar |
|---|---|
| Author | Daya, Ali Akbar Zaremotlagh, Soheil |
| Copyright Year | 2013 |
| Abstract | From a geostatistical viewpoint, non-linear interpolation is an attempt to estimate the conditional expectation, and further the conditional distribution of grade at a location, as opposed to simply predicting the grade itself. There are many non-linear methods now available. Disjunctive Kriging is one of them. This paper presents a comparison of ordinary kriging and disjunctive kriging in Choghart iron ore deposit in Yazd province, Iran. The case study consists of borehole samples measuring the Fe concentration. The sample data used in this study consist of exploration drilling data, suitably composited. The data set is irregularly spaced and has an almost normal distribution. Fe grade was selected as the major regional variable on which the present research has focused. To carry out ordinary kriging and disjunctive kriging, spherical model was fitted over empirical variogram. To estimate the Iron grade, ordinary kriging and disjunctive kriging methods were used. All of the exploitable blocks with dimensions 20*20*12.5 (m) were estimated. In the case of Choghart iron ore deposit the average of disjunctive kriging estimation error variance is 72.076 while the average of ordinary kriging estimation error variance is 100.278. So estimation with ordinary kriging is more risky. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://scindeks-clanci.ceon.rs/data/pdf/1450-5959/2013/1450-59591301001D.pdf |
| Alternate Webpage(s) | https://www.jmma.tfbor.bg.ac.rs/Volumes/2013/01.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
