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All Journal JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang Majalah Ilmiah MOMENTUM Journal of Earth and Marine Technology (JEMT) Jurnal Rekayasa Energi dan Mekanika
Wahid, Muhammad Abdul
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Aerospace Engineering Automotive Engineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Education Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Physics Transportation

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Journal : Journal of Earth and Marine Technology (JEMT)

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Bauxite Resource Estimation Analysis Using Ordinary Kriging and Inverse Distance Weighting in West Kalimantan Wahid, Muhammad Abdul; Winarno, Eddy
Journal of Earth and Marine Technology (JEMT) Vol 4, No 2 (2024)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2024.v4i2.5340

Abstract

PT X is a mining company engaged in bauxite mining which is located in Nanga Tayap District, Ketapang Regency, West Kalimantan Province. Currently the company is carrying out further exploration activities to find potential bauxite resources which will later be upgraded into reserves for mining. In resource estimation, there are several methods that can be used, such as the Nearest Neighbor Point method, Inverse Distance Weighting, and Ordinary Kriging. This research aims to analyze two resource estimation methods, namely Inverse Distance Weighting and Ordinary Kriging for resource estimation and choose the best method based on geological conditions and RMSE value parameters. Based on the results of this research, the estimated value of bauxite resources using the IDW method obtained a tonnage of 1,046,874.99 tons with an average Al₂O₃ content of 47.28%. Meanwhile, the estimated bauxite resource value using the OK method obtained a tonnage of 1,046,875.01 tonnes with an average Al₂O₃ content of 48.15%. Based on the calculation of the Root Mean Squared Error (RMSE) value from the two methods, the respective RMSE values were obtained, namely IDW = 0.0001263 and OK = 0.0084145. From these results it can be concluded that the best method for estimating bauxite resources in the Enggang block is the Inverse Distance Weighting (IDW) method.
Overview Methods Calculation Resource and Reserve Estimation Wahid, Muhammad Abdul; Winarno, Eddy
Journal of Earth and Marine Technology (JEMT) Vol 4, No 2 (2024)
Publisher : Lembaga Penelititan dan Pengabdian kepada Masyarakat - Institut Teknologi Adhi Tama Suraba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jemt.2024.v4i2.5344

Abstract

The calculation of resources and reserves is carried out base on several factors, namely: Sediment Geology, Exploration Method, Type of data owned, purpose of calculation, and desired level of confidence. There are several methods for calculating resources and reserves, including: Area of Influence, Cross Section, Polygon, Triangulation, Isoline, as well as several Interpolation Methods such as : Ordinary Kriging (OK), Neighborhood Nearest Point (NNP) and Inverse Distance Weighting (IDW). Therefore, it is necessary to carry out an analysis related to the method of calculating the right resources and reserves in order to produce more accurate estimates of resources and reserves. The author analyses by making comparisons between several previous studies by looking at the advantages and disadvantages of these methods based on existing literature studies.
Co-Authors Akhmad Zidni Hudaya Eddy Winarno, Eddy Helmy Purwanto Meilasari, Fitriana Muhammad Dzulfikar Pangestu, Wahyu Adi Prawibowo, Hartanto Rianto Wibowo Rifky Ismail Slamet Khoeron Sutono, Sugoro Bhakti Tanaka, Imam Ridwan Yosomulyono, Sutarto