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OVERVIEW OF THE UNWANTED EFFECTS OF UNMINEABLE ROCK FORMATIONS ON THE MINING SYSTEM OF BUCKET WHEEL EXCAVATOR DURING THE EXCAVATION PROCESS
Abstract
One of the frequent problems that needs to be addressed when mining coal deposits is the presence in the working face of cohesive materials having high mechanical strength in relation to the average rock to be excavated. These are generally called пїЅhard formationsпїЅ or пїЅhard inclusionsпїЅ and are in the form of either continuous layers or boulders. This problem is of particular importance in Europe where lignite deposits are exploited in large opencast mines utilizing Bucket Wheel Excavators (BWEs) as the main means of excavation. Often it is difficult or impossible to excavate these hard inclusions with BWEs. If their location has been previously determined by exploration, they are usually blasted. But it is not uncommon to discover them when it is too late, that is when the BWE actually digs into them. The actually operating of BWEs are designed to excavate materials with an пїЅearthyпїЅ texture with low mechanical strength. Dynamic and stochastic impact loads exerted on the machine during these encounters are the most common causes of major BWE component failures leading to downtime, production disruption, and high-cost repairs.
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References7
Rasper, L., The Bucket Wheel Excavator : Development - Design - Application, Clausthal-Zellerfeld: Trans Tech Publications
Kovacs I., Nan M., Jula D., Tomus O.: New buckets mounted on rotor excavators as a results of dislokation tested process. International Conference on Applied Computer Science, Malta 2010.
Maria Lazar, Iosif Andras Research on the Optimal Technology for Exploitation of the Thin Lignite Layers in the Open Pits from Oltenia Coalfield. In Lecture Notes in Production Engineering, pag. 157 170. Springer Verlag, 2015; ISSN 2194-0525; ISBN 978-3-319-12300-1. DOI: 10.1007/978-3-319-12300-1. http://link.springer.com/ chapter/10.1007%2F978-3-319-12301-1_16
Chudnovskii, V.Yu. - Study Of Dynamic Properties Of Bucket-Wheel Excavator Designs, Gornoye Oborudovaniye I Elektromekhanika , 2006, No. 1, Pp. 27 32.
Robrecht M. Schmitz Excavation Of Rock Concretions In Hambach Opencast Mine: In Situ Tests 11th Congress Of The International Society For Rock Mechanics - Ribeiro E Sousa, Olalla & Grossmann (Eds) Taylor & Francis Group, London, ISBN 978-0-415-45084-3
Raaz, V., Optimierung Der Maschinen- Mid Verfahrenrechnischen Parameter Von Schaufelradbaggem Für Einen Abbau Von Harteren Materialen Ím Tagebau. Braunkohle In Europa: Innovationen Für Die Zukunfl; 1. Internationale Konferennnz, 29.Marz Bis 1. Aprili 2000. In Freiberg, Tagungsband
Gábor Ladányi, István Sümegi, Bucket And Cutting Tooth Developments For The Bucket Wheel Excavators Of Mátra Power Station Llc Geosciences And Engineering, Vol. 1, No. 1 (2012), Pp. 177 186.
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