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Neural network approach to model the flow of crude ore
2004 (engelsk)Independent thesis Advanced level (professional degree), 20 poäng / 30 hpOppgave
Abstract [en]

In order to decrease ore dilution and ore losses it is necessary to control the draw of the mucking material during the loading operation. In LKAB, the mucked rock inside the LHD’s scoop is weighed before dumping into the ore passes. This creates a series of data indicating the variation of the rock material during the mining cycle for each drilling ring, which constitutes a database for draw control purposes. This thesis is divided into two parts. The first part is about the estimation of the ore content in the mucked material in the bucket of the LHD machine. Different ways to estimate draw control parameters are investigated. The second part treats the prediction of the weight of the LHD bucket based on the sequence of loaded scoops obtained from the same drilling ring using neural networks. Through the application of neural networks one does not intend to study the physical phenomenon which requires the modelling of determinant variables. Instead this approach is used to predict the mining output, i.e., the rock material mucked out from the drilling rings. Results from the application of neural networks show that this is a good approach. Neural networks are promising for implementation of expert systems for remote loading operation in LKAB. Several suggestions for improvements or even implementations in the mine are given.

sted, utgiver, år, opplag, sider
2004.
Emneord [en]
Technology, loading operation, neural networks, control and prediction, automation parameter estimates
Emneord [sv]
Teknik
Identifikatorer
URN: urn:nbn:se:ltu:diva-56885ISRN: LTU-EX--04/125--SELokal ID: da024989-5eaa-4d6c-8ffa-37e3925d570bOAI: oai:DiVA.org:ltu-56885DiVA, id: diva2:1030272
Fag / kurs
Student thesis, at least 30 credits
Utdanningsprogram
Applied Geoscience and Mining, master's level
Examiner
Merknad
Validerat; 20101217 (root)Tilgjengelig fra: 2016-10-04 Laget: 2016-10-04bibliografisk kontrollert

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Totalt: 12 treff
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