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Bulletin of Engineering Geology and the Environment

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04.01.2020 | Original Paper

Assessment of pick wear based on the field performance of two transverse type roadheaders: a case study from Amasra coalfield

verfasst von: Okan Su, Muhammet Akkaş

Erschienen in: Bulletin of Engineering Geology and the Environment | Ausgabe 5/2020

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Abstract

A successful excavation of roadheaders depends on the cutting performance and the tool life of conical picks. Tool life is important in terms of wear rate which is affected by different rock parameters such as equivalent quartz content, mineral grain size, as well as cutting parameters on the cutterhead. In this study, analyses among wear rate, specific energy, advance rate, and cutter consumption were carried out. The wear mechanisms of two different models of conical picks were examined from different aspects depending on rock and machine parameters. Their relation with the mechanical and abrasivity properties of rocks and petrographic analyses were investigated. In addition, the metallurgic content and Rockwell hardness of conical picks were determined to describe the metal alloys and their effects on the wear of cutting tool. The results showed that the metallurgic content, pick positions, and other environmental conditions influence the wear mechanism. Finally, two different models were proposed to estimate the pick consumption in sandstone and siltstone rocks based on actual data obtained from coalfield.

Vorheriger Artikel A numerical study to investigate the influence of surface roughness and boundary condition on the shear behaviour of rock joints

Nächster Artikel A precursor of bedding rockslide: rock spalling in the key block triggered by tensile cracks

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Titel: Assessment of pick wear based on the field performance of two transverse type roadheaders: a case study from Amasra coalfield
verfasst von: Okan Su
Muhammet Akkaş
Publikationsdatum: 04.01.2020
Verlag: Springer Berlin Heidelberg
Erschienen in: Bulletin of Engineering Geology and the Environment / Ausgabe 5/2020
Print ISSN: 1435-9529
Elektronische ISSN: 1435-9537
DOI: https://doi.org/10.1007/s10064-019-01712-x

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