TY  - CHAP
AU  - Narimani Ghourtlar, Samad
AU  - Davarpanah, Seyed Morteza
AU  - Kovács, László
AU  - Vásárhelyi, Balázs
ED  - Schubert, Wulf
ED  - Kluckner, Alexander
TI  - Characterization of Poisson’s ratio and Elastic Modulus of granitic rocks: from micro-crack initiation to failure
T2  - Proceedings of the ISRM 15th International Congress on Rock Mechanics and Rock Engineering & 72nd Geomechanics Colloquium
PB  - Austrian Society for Geomechanics
CY  - Salzburg
SN  - 9783950389838
PY  - 2023
SP  - 2508
EP  - 2513
PG  - 6
UR  - https://m2.mtmt.hu/api/publication/34184044
ID  - 34184044
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Somodi, Gábor
AU  - Bar, Neil
AU  - Kovács, László
AU  - Arrieta, Marco
AU  - Török, Ákos
AU  - Vásárhelyi, Balázs
TI  - Study of Rock Mass Rating (RMR) and Geological Strength Index (GSI) Correlations in Granite, Siltstone, Sandstone and Quartzite Rock Masses
JF  - APPLIED SCIENCES-BASEL
J2  - APPL SCI-BASEL
VL  - 11
PY  - 2021
IS  - 8
PG  - 12
SN  - 2076-3417
DO  - 10.3390/app11083351
UR  - https://m2.mtmt.hu/api/publication/31963527
ID  - 31963527
AB  - 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.
LA  - English
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Kovács, László
ED  - Silye, Lóránd
TI  - A primer kőzetfeszültség és a feszültségváltozás in situ mérése a Bátaapáti Nemzeti Radioaktívhulladék-tárolóban
T2  - XIX. Bányászati, Kohászati és Földtani Konferencia
PB  - Erdélyi Magyar Műszaki Tudományos Társaság (EMT)
CY  - Kolozsvár
PY  - 2017
SP  - 105
EP  - 109
PG  - 5
UR  - https://m2.mtmt.hu/api/publication/3215762
ID  - 3215762
LA  - Hungarian
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Somodi, Gábor
AU  - Krupa, Á
AU  - Kovács, László
AU  - Vásárhelyi, Balázs
ED  - Silye, Lóránd
TI  - A Geológiai Szilárdsági Index (GSI) meghatározásának lehetőségei és problémái a gyakorlatban
T2  - XIX. Bányászati, Kohászati és Földtani Konferencia
PB  - Erdélyi Magyar Műszaki Tudományos Társaság (EMT)
CY  - Kolozsvár
PY  - 2017
SP  - 217
EP  - 221
PG  - 5
UR  - https://m2.mtmt.hu/api/publication/3207333
ID  - 3207333
LA  - Hungarian
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Borbély, D
AU  - Megyeri, T
AU  - Szántó, V
AU  - Kovács, László
TI  - Crossing fault zones
JF  - TUNNELS AND TUNNELLING INTERNATIONAL
J2  - TUNNELS TUNNEL INT
VL  - 2016
PY  - 2016
IS  - July
SP  - 38
EP  - 43
PG  - 6
SN  - 2054-1236
UR  - https://m2.mtmt.hu/api/publication/3215759
ID  - 3215759
LA  - English
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Borbély, D
AU  - Megyeri, T
AU  - Szántó, V
AU  - Kovács, László
ED  - WTC, null
TI  - Crossing fault zones. Detailed analysis for radioactive waste repository design
T2  - World Tunnelling Congress 2016 Proceedings
PB  - Society for Mining, Metallurgy, and Exploration (SME)
CY  - Englewood Cliffs (NJ)
SN  - 9780873354240
PY  - 2016
SP  - 1708
EP  - 1717
PG  - 10
UR  - https://m2.mtmt.hu/api/publication/3215755
ID  - 3215755
LA  - English
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Vásárhelyi, Balázs
AU  - Somodi, Gábor
AU  - Krupa, Á
AU  - Kovács, László
ED  - Ulusay, Reşat
ED  - Aydan, Omer
ED  - Gerçek, Hasan
ED  - Hindistan, Mehmet Ali
ED  - Tuncay, Ergün
TI  - Determining the Geological Strength Index (GSI) using different methods
T2  - Rock Mechanics and Rock Engineering: From the Past to the Future
PB  - CRC Press/Balkema
CY  - Leiden
SN  - 9781138032651
PY  - 2016
SP  - 1049
EP  - 1054
PG  - 6
DO  - 10.1201/9781315388502-183
UR  - https://m2.mtmt.hu/api/publication/3105252
ID  - 3105252
AB  - 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.
LA  - English
DB  - MTMT
ER  - 

TY  - JOUR
AU  - Vásárhelyi, Balázs
AU  - Kovács, László
AU  - Török, Ákos
TI  - Analysing the modified Hoek–Brown failure criteria using Hungarian granitic rocks
JF  - GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
J2  - GEOMECH GEOPHYS GEO-ENERGY GEO-RESOURCES
VL  - 2
PY  - 2016
IS  - 2
SP  - 131
EP  - 136
PG  - 6
SN  - 2363-8419
DO  - 10.1007/s40948-016-0021-7
UR  - https://m2.mtmt.hu/api/publication/3064838
ID  - 3064838
AB  - 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.
LA  - English
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Mészáros, Eszter
AU  - Somodi, Gábor
AU  - Majoros, Péter
AU  - Kovács, László
AU  - Deák, Ferenc
ED  - Török, Ákos
ED  - Görög, Péter
ED  - Vásárhelyi, Balázs
TI  - A Mecsek UCG kutatási projekt geotechnikai vizsgálati programja
T2  - Mérnökgeológia-Kőzetmechanika 2015
PB  - Hantken Kiadó
CY  - Budapest
SN  - 9786155086090
T3  - Mérnökgeológia-Kőzetmechanika Kiskönyvtár, ISSN 1789-0454 ; 18.
PY  - 2015
SP  - 259
EP  - 256
UR  - https://m2.mtmt.hu/api/publication/3215232
ID  - 3215232
N1  - A tartalomjegyzékben eltérő oldalszámmal szerepel: pp. 245-256
~
Intézményi affiliáció: Kőmérő Kft
LA  - Hungarian
DB  - MTMT
ER  - 

TY  - CHAP
AU  - Deák, F
AU  - Kovács, László
ED  - Török, Ákos
ED  - Görög, Péter
ED  - Vásárhelyi, Balázs
TI  - 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]
TS  - [=Estimation of residual rock mechanical parameters in the Mórágy Granite Formation based on measured database and numerical back analyses]
T2  - Mérnökgeológia-Kőzetmechanika 2015
PB  - Hantken Kiadó
CY  - Budapest
SN  - 9786155086090
T3  - Mérnökgeológia-Kőzetmechanika Kiskönyvtár, ISSN 1789-0454 ; 18.
PY  - 2015
SP  - 231
EP  - 240
PG  - 10
UR  - https://m2.mtmt.hu/api/publication/3215229
ID  - 3215229
N1  - A tartalomjegyzékben eltérő oldalszámmal szerepel: pp. 233-244
LA  - Hungarian
DB  - MTMT
ER  -