@inproceedings{MTMT:34184044,
	title = {Characterization of Poisson’s ratio and Elastic Modulus of granitic rocks: from micro-crack initiation to failure},
	url = {https://m2.mtmt.hu/api/publication/34184044},
	author = {Narimani Ghourtlar, Samad and Davarpanah, Seyed Morteza and Kovács, László and Vásárhelyi, Balázs},
	booktitle = {Proceedings of the ISRM 15th International Congress on Rock Mechanics and Rock Engineering & 72nd Geomechanics Colloquium},
	unique-id = {34184044},
	year = {2023},
	pages = {2508-2513},
	orcid-numbers = {Vásárhelyi, Balázs/0000-0002-0568-1031}
}

@article{MTMT:31963527,
	title = {Study of Rock Mass Rating (RMR) and Geological Strength Index (GSI) Correlations in Granite, Siltstone, Sandstone and Quartzite Rock Masses},
	url = {https://m2.mtmt.hu/api/publication/31963527},
	author = {Somodi, Gábor and Bar, Neil and Kovács, László and Arrieta, Marco and Török, Ákos and Vásárhelyi, Balázs},
	doi = {10.3390/app11083351},
	journal-iso = {APPL SCI-BASEL},
	journal = {APPLIED SCIENCES-BASEL},
	volume = {11},
	unique-id = {31963527},
	abstract = {A comprehensive understanding of geological, structural geological, hydrogeological and geotechnical features of the host rock are essential for the design and performance evaluation of surface and underground excavations. The Hungarian National Radioactive Waste Repository (NRWR) at Bátaapáti is constructed in a fractured granitic formation, and Telfer Gold Mine in Australia is excavated in stratified siltstones, sandstones and quartzites. This study highlights relationships between GSI chart ratings and calculated GSI values based on RMR rock mass classification data. The paper presents linear equations for estimating GSI from measured RMR89 values. Correlations between a and b constants were analyzed for different rock types, at surface and subsurface settings. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.},
	keywords = {Granite; RMR; sandstone; Rock mass classification; quartzite; GSI},
	year = {2021},
	eissn = {2076-3417},
	orcid-numbers = {Török, Ákos/0000-0002-5394-4510; Vásárhelyi, Balázs/0000-0002-0568-1031}
}

@inproceedings{MTMT:3215762,
	title = {A primer kőzetfeszültség és a feszültségváltozás in situ mérése a Bátaapáti Nemzeti Radioaktívhulladék-tárolóban},
	url = {https://m2.mtmt.hu/api/publication/3215762},
	author = {Kovács, László},
	booktitle = {XIX. Bányászati, Kohászati és Földtani Konferencia},
	unique-id = {3215762},
	year = {2017},
	pages = {105-109}
}

@inproceedings{MTMT:3207333,
	title = {A Geológiai Szilárdsági Index (GSI) meghatározásának lehetőségei és problémái a gyakorlatban},
	url = {https://m2.mtmt.hu/api/publication/3207333},
	author = {Somodi, Gábor and Krupa, Á and Kovács, László and Vásárhelyi, Balázs},
	booktitle = {XIX. Bányászati, Kohászati és Földtani Konferencia},
	unique-id = {3207333},
	year = {2017},
	pages = {217-221},
	orcid-numbers = {Vásárhelyi, Balázs/0000-0002-0568-1031}
}

@article{MTMT:3215759,
	title = {Crossing fault zones},
	url = {https://m2.mtmt.hu/api/publication/3215759},
	author = {Borbély, D and Megyeri, T and Szántó, V and Kovács, László},
	journal-iso = {TUNNELS TUNNEL INT},
	journal = {TUNNELS AND TUNNELLING INTERNATIONAL},
	volume = {2016},
	unique-id = {3215759},
	issn = {2054-1236},
	year = {2016},
	eissn = {0041-414X},
	pages = {38-43}
}

@inproceedings{MTMT:3215755,
	title = {Crossing fault zones. Detailed analysis for radioactive waste repository design},
	url = {https://m2.mtmt.hu/api/publication/3215755},
	author = {Borbély, D and Megyeri, T and Szántó, V and Kovács, László},
	booktitle = {World Tunnelling Congress 2016 Proceedings},
	unique-id = {3215755},
	year = {2016},
	pages = {1708-1717}
}

@inproceedings{MTMT:3105252,
	title = {Determining the Geological Strength Index (GSI) using different methods},
	url = {https://m2.mtmt.hu/api/publication/3105252},
	author = {Vásárhelyi, Balázs and Somodi, Gábor and Krupa, Á and Kovács, László},
	booktitle = {Rock Mechanics and Rock Engineering: From the Past to the Future},
	doi = {10.1201/9781315388502-183},
	unique-id = {3105252},
	abstract = {During the design process in rock engineering Hoek-Brown 
		failure envelope is used for the determination of rock mass 
		failure envelope mainly in brittle rocks. An important input 
		parameter of the Hoek-Brown failure envelope is the 
		Geological Strength Index (GSI), which varies between 0 and 
		100, and concentrates on the description of rock structure 
		and block surface conditions. There are several methods which 
		define GSI but a general international standard has not been 
		specified yet. Our aim is to analyze different methods of
		GSI determination on the basis of observations during the 
		construction phase of the Bátaapáti radioactive waste 
		repository. Examinations of the values determined on-site 
		gave significantly different results. Different correlations 
		were determined between the calculated GSI values.},
	year = {2016},
	pages = {1049-1054},
	orcid-numbers = {Vásárhelyi, Balázs/0000-0002-0568-1031}
}

@article{MTMT:3064838,
	title = {Analysing the modified Hoek–Brown failure criteria using Hungarian granitic rocks},
	url = {https://m2.mtmt.hu/api/publication/3064838},
	author = {Vásárhelyi, Balázs and Kovács, László and Török, Ákos},
	doi = {10.1007/s40948-016-0021-7},
	journal-iso = {GEOMECH GEOPHYS GEO-ENERGY GEO-RESOURCES},
	journal = {GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES},
	volume = {2},
	unique-id = {3064838},
	issn = {2363-8419},
	abstract = {The Hoek–Brown empirical failure envelope is widely used for 
		determining the strength of brittle intact rock and rock 
		masses. One of the two independent parameters in the formula 
		is the Hoek–Brown’s material constant (mi), which has several
		uncertainties, since it relies on a set of triaxial tests. 
		The present paper introduces a new approach to determine the 
		material constant by using the uniaxial compressive strength, 
		rather than the triaxial strength values. This newly 
		calculated Hoek–Brown parameter was cross-checked by using 
		published data and new experimental data obtained from 
		granitic samples of Bataapati (Hungary). Based on these new 
		equations new material constants are suggested to be used in
		calculations.},
	year = {2016},
	eissn = {2363-8427},
	pages = {131-136},
	orcid-numbers = {Vásárhelyi, Balázs/0000-0002-0568-1031; Török, Ákos/0000-0002-5394-4510}
}

@inbook{MTMT:3215232,
	title = {A Mecsek UCG kutatási projekt geotechnikai vizsgálati programja},
	url = {https://m2.mtmt.hu/api/publication/3215232},
	author = {Mészáros, Eszter and Somodi, Gábor and Majoros, Péter and Kovács, László and Deák, Ferenc},
	booktitle = {Mérnökgeológia-Kőzetmechanika 2015},
	unique-id = {3215232},
	year = {2015},
	pages = {259-256}
}

@inbook{MTMT:3215229,
	title = {A Mórágyi Gránit Formáció kőzettestét jellemző reziduális kőzetmechanikai paraméterek becslése mérési adatsorokon alapuló numerikus modellezési háttéranalízissel. [=Estimation of residual rock mechanical parameters in the Mórágy Granite Formation based on measured database and numerical back analyses]},
	url = {https://m2.mtmt.hu/api/publication/3215229},
	author = {Deák, F and Kovács, László},
	booktitle = {Mérnökgeológia-Kőzetmechanika 2015},
	unique-id = {3215229},
	year = {2015},
	pages = {231-240}
}