An Optimum Selection of Simulated Geological Models by Multi-Point Geostatistics and Multi-Criteria Decision-Making Approaches; a Case Study in Sungun Porphyry-Cu deposit, Iran | ||
| Journal of Mining and Environment | ||
| مقاله 11، دوره 11، شماره 2، تیر 2020، صفحه 481-503 اصل مقاله (2.24 M) | ||
| نوع مقاله: Original Research Paper | ||
| شناسه دیجیتال (DOI): 10.22044/jme.2020.8710.1757 | ||
| نویسندگان | ||
| S. Talesh Hosseini1؛ O. Asghari* 1؛ Seyed A. Torabi2؛ M. Abedi3 | ||
| 1Simulation and Data Processing Laboratory, School of Mining Engineering, College of Engineering, University of Tehran, Tehran, Iran. | ||
| 2School of Industrial Engineering, College of Engineering, University of Tehran, Tehran, Iran. | ||
| 3Geo-Exploration Targeting Laboratory (GET-Lab), School of Mining Engineering, College of Engineering, University of Tehran, Tehran, Iran. | ||
| چکیده | ||
| An accurate modeling of sophisticated geological units has a substantial impact on designing a mine extraction plan. Geostatistical simulation approaches, via defining a variogram model or incorporating a training image (TI), can tackle the construction of various geological units when a sparse pattern of drilling is available. The variogram-based techniques (derived from two-point geostatistics) usually suffer from reproducing complex and non-linear geological units as dyke. However, multipoint geostatistics (MPS) resolves this issue by incorporating a training image from a prior geological information. This work deals with the multi-step Single Normal Equation Simulation (SNESIM) algorithm of dyke structures in the Sungun Porphyry-Cu system, NW Iran. In order to perform a multi-step SNESIM algorithm, the multi-criteria decision-making and MPS approaches are used in a combined form. To this end, two TIs are considered, one for simulating dyke structures in the shallow depth, and two for simulating dyke structures in a deeper depth. In the first step, a TI is produced using geological map, which has been mined out during the previous exploration operations. After producing TI, the 35 realizations are simulated for the shallow depth of deposit in the area under study. To select the best realization (as a TI for the next step) of the simulation results, several statistical criteria are used and the results obtained are compared. To this end, a hybrid multi-criteria decision-making is designed on the basis of a group of statistical criteria. In the next step, the dyke structures in the deeper depth are also simulated by the new TI. | ||
| کلیدواژهها | ||
| Sophisticated Geological Units؛ Training Image؛ SNESIM Algorithm, MCDM, Sungun Porphyry-Cu Deposit | ||
| مراجع | ||
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