TY - GEN
T1 - A methodology for assessing rock mass damage in underground mining
AU - Adoko, A. C.
AU - Zhalel, M.
N1 - Publisher Copyright:
© 2020 ISRM.
PY - 2020
Y1 - 2020
N2 - The assessment of rock mass damage in underground mining environment is vital in stope design since it can assist in determining the extent of the excavation-damaged zone, min- imizing stope dilution and also improve ground support measures. Hence, the aim of this paper is to assess the rock mass damage including the inherent damage and mining-induced based on rock mass characteristics. A methodology based on the rock engineering system is implemented to define the Rock Mass Damage index (RMDi) and to quantify its influencing parameters. Historical data of drift excavations in Birchtree mine are used. The input parameters consist of the rock mass parameters and the excavation characteristics. The RMDi values are compared to the excavation overbreak and underbreak. The results suggest good correlation. It is concluded that the RMDi system could be used as a design tool to assess rock mass damage related to drill-and-blast and mechanical excavation in mine development.
AB - The assessment of rock mass damage in underground mining environment is vital in stope design since it can assist in determining the extent of the excavation-damaged zone, min- imizing stope dilution and also improve ground support measures. Hence, the aim of this paper is to assess the rock mass damage including the inherent damage and mining-induced based on rock mass characteristics. A methodology based on the rock engineering system is implemented to define the Rock Mass Damage index (RMDi) and to quantify its influencing parameters. Historical data of drift excavations in Birchtree mine are used. The input parameters consist of the rock mass parameters and the excavation characteristics. The RMDi values are compared to the excavation overbreak and underbreak. The results suggest good correlation. It is concluded that the RMDi system could be used as a design tool to assess rock mass damage related to drill-and-blast and mechanical excavation in mine development.
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M3 - Conference contribution
AN - SCOPUS:85084659504
SN - 9780367422844
T3 - Rock Mechanics for Natural Resources and Infrastructure Development- Proceedings of the 14th International Congress on Rock Mechanics and Rock Engineering, ISRM 2019
SP - 947
EP - 954
BT - Rock Mechanics for Natural Resources and Infrastructure Development- Proceedings of the 14th International Congress on Rock Mechanics and Rock Engineering, ISRM 2019
A2 - da Fontoura, Sergio A.B.
A2 - Rocca, Ricardo José
A2 - Mendoza, José Félix Pavón
PB - CRC Press/Balkema
T2 - 14th International Congress on Rock Mechanics and Rock Engineering, ISRM 2019
Y2 - 13 September 2019 through 18 September 2019
ER -