Reserve Estimation Using DATAMINE software
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This project report compares different mineral reserve estimation techniques using Datamine software. The objectives are to reduce costs and time for reserve estimation, predict suitable techniques for precise and accurate reserve computation, and facilitate economic mining. The report describes nearest neighbor, inverse distance, and ordinary kriging methods. It then details the methodology used to model an ore body in Datamine and compare error rates between ordinary kriging and other techniques. The conclusion is that nearest neighbor overestimates grade and underestimates volume while inverse distance overestimates both compared to ordinary kriging.
Reserve Estimation Using DATAMINE software
- 1. Project Report On Ore Body Modeling & Comparison Between Different Reserve Estimation Techniques with Datamine Submitted By Abhilash Chandrawat Sushant Kumar (B.Tech. Final Year) Guided By Dr. S.C Jain Asstt. Professor Dept. of Mining Engineering
- 2. Reduction in cost and time of reserve estimation process. To predict suitable mineral estimation tech. for achieving efficient, tending towards more precise and accurate computation . Many of the mines are abandoned due to lack of knowledge about structural geology and its various techniques related to ore reserve estimation. To facilitate economic mining activity by predicting appropriate estimation method. Objectives of the project:
- 3. Mineral reserve is a economically mineable part of a measured or indicated mineral resource demonstrated by at least a preliminary feasible study.
- 4. Reserve Estimation Methods Nearest Neighbour method Inverse distance method Ordinary krigging method Nearest Neighbour Method(Proximal Interpolation) : Interpolation is the method of approximation of the value of a function for a given point in some space. The nearest neighbor method selects the value of the nearest point in the predefined space and does not consider the value of other neighboring points.
- 5. Inverse Distance Method: The inverse-distance weighted procedure is versatile, easy to program and understand, and is fairly accurate under a wide range of conditions. Using this method, the property at each unknown location for which a solution is sought. The basic equation used in inverse distance method is:
- 6. Ordinary Krigging Method : Krigging is an estimating method that gives the minimum variance unbiased linear estimates of point values or of block averages. The accuracy of the estimates depends on the several factors which are as follows: The main venture in ordinary krigging is to build a variogram from the dissipate point set to be interpolated. A variogram comprises of two parts: an experimental variogram and a model variogram. The basic equation used in ordinary kriging is:
- 7. World’s Leading integrated software for the natural industries. Used for data capture & analysis, exploration, geology, geochemistry, surveying, ore body modelling, UG & Open Pit Mine Design and Production Planning and also in related areas such as environmental studies. Key Advantages: 1. Data entry & Validation 2. Geological Modelling 3. Mine Planning & Production Scheduling (NPV Scheduler) 4. Ramps and Haul Road Design Brief Introduction Of CAE’s DATAMINE Software
- 8. METHODOLOGY
- 43. Conclusion - The error in estimation in case of Ordinary Krigging was computed and the efficiency of reserve estimation using Nearest Neighbor and Inverse Distance (with power 2 & 3) method was compared with Ordinary Krigging method assuming it to be the best linear unbiased method. - From the obtained estimation results it was concluded that Nearest Neighbor method overestimates the Copper percentage and underestimates the volume of the reserve while Inverse distance (with power 2 & 3) method overestimates both attributes in comparison to Ordinary Krigging.
- 44. THANK YOU!