Partner: Hubert Kargl

Sandvik Mining and Construction GmbH (AT)

Recent publications
1.Rojek J., Oñate E., Labra C., Kargl H., Discrete element simulation of rock cutting, INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES, ISSN: 1365-1609, DOI: 10.1016/j.ijrmms.2011.06.003, Vol.48, pp.996-1010, 2011

This paper presents numerical modelling of rock cutting processes. The model consists of a tool–rock system. The rock is modelled using the discrete element method, which is suitable to study problems of multiple material fracturing such as those involved in rock cutting. Both 2D and 3D models are considered in this work. The paper presents a brief overview of the theoretical formulation and calibration of the discrete element model by a methodology combining the dimensional analysis with simulation of the unconfined compressive strength (UCS) and indirect tension (Brazilian) tests. The rock cutting process with roadheader picks, which is typical for underground excavation, has been simulated. The results of the 2D and 3D analyses have been compared with one another, and numerical results have been compared with the available experimental data.


Rock cutting, Roadheader, Discrete element method, Simulation, Numerical model

Oñate E.-Centre Internacional de Mètodes Numèrics en Enginyeria (CIMNE) (ES)
Labra C.-Particle Analytics Ltd (GB)
Kargl H.-Sandvik Mining and Construction GmbH (AT)

List of chapters in recent monographs
Rojek J., Oñate E., Labra C., Kargl H., Particle-Based Methods, Series: Computational Methods in Applied Sciences, rozdział: Discrete Element Modelling of Rock Cutting, Springer, 25, pp.247-267, 2011
Rojek J., Oñate E., Labra C., Kargl H., Akerman J., Technology innovation in underground construction, rozdział: Optimizing rock cutting through computer simulation, CRC Press, Beer G. (Ed.), pp.299-314, 2009

Conference papers
1.Rojek J., Kargl H., Labra C., Oñate E., 3d simulation of rock cutting in underground excavation, EURO:TUN 2009, 2nd International Conference on Computational Methods in Tunnelling, 2009-09-09/09-11, Bochum (GE), pp.157-162, 2009