Amri, Nur Ali and Jemain, Abdul Aziz and Hassan, Wan Fuad Wan and SIRI, Hasywir Thaib (2015) Determination of Initial Lag and Maximum Lag Distance of Semivariogram on Reserves Calculation of Gold Vein. Jurnal Promine, 3 (2). pp. 42-53.
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Abstract
The reserves calculation is one of the early stages before the mining operation, which begins with the samples prediction. Ordinary kriging is a part of the kriging method that works with semivariogram parameters. The calculation of these parameters based on several things, including the determination of the lag distance and the fitting model. This paper is based on the determination of the maximum lag distance of 500 and 800 where the lag distance for both, respectively 15, 25 and 35 with WLS and OLS fitting models. The six combinations can be concluded that increasing of maximum lag distance adds to a large of sill and extend the range. OK prediction shows that the largest gold grade mean (5.032) occurs in the kriging using WLS fitting models, in which the maximum lag distance semivariogram is 500 and the distance of each lag is 35.
| Item Type: | Article |
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| Subjects: | T Technology > TN Mining engineering. Metallurgy |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Engineering Sciences |
| Depositing User: | Dr. Nur Ali Amri |
| Date Deposited: | 05 Feb 2020 06:19 |
| Last Modified: | 05 Feb 2020 06:19 |
| URI: | http://eprints.upnyk.ac.id/id/eprint/22208 |
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