A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Proposed adjustments and validation of different $ RMR_{89} $ geomechanical classification for Quadrilátero Ferrífero lithologies
https://orcid.org/0000-0003-2959-3041
Abstract Geomechanical classifications of rock masses are of great interest and importance for the design of civil and mining works, as slopes, open pits, and underground excavations stability are directly related to the mechanical properties of the rock mass classes. Some of the most common geomechanical rock mass classifications currently used are the RMR (Rock Mass Rating), the Q system, and the GSI (Geological Strength Index). Recently (2011), it was presented a new approach for RMR in which the author had pointed an erroneous understanding by some of the RMR users related to the weights adopted for some parameters. Due to the great difficulty found by some professionals to classify highly weathered rock masses by using $ RMR_{89} $, various authors have proposed a correction of for $ RMR_{89} $ values by considering an adjustment index. On this context, the present work has the aim of verifying, for several rock masses from Quadrilátero Ferrífero, Minas Gerais, Brazil, the effectiveness of these three proposed adjustments on $ RMR_{89} $. The results has shown that the corrections proposed better represent the weathered rock masses usually found on open pit on Quadrilátero Ferrífero.
Proposed adjustments and validation of different $ RMR_{89} $ geomechanical classification for Quadrilátero Ferrífero lithologies
https://orcid.org/0000-0003-2959-3041
Abstract Geomechanical classifications of rock masses are of great interest and importance for the design of civil and mining works, as slopes, open pits, and underground excavations stability are directly related to the mechanical properties of the rock mass classes. Some of the most common geomechanical rock mass classifications currently used are the RMR (Rock Mass Rating), the Q system, and the GSI (Geological Strength Index). Recently (2011), it was presented a new approach for RMR in which the author had pointed an erroneous understanding by some of the RMR users related to the weights adopted for some parameters. Due to the great difficulty found by some professionals to classify highly weathered rock masses by using $ RMR_{89} $, various authors have proposed a correction of for $ RMR_{89} $ values by considering an adjustment index. On this context, the present work has the aim of verifying, for several rock masses from Quadrilátero Ferrífero, Minas Gerais, Brazil, the effectiveness of these three proposed adjustments on $ RMR_{89} $. The results has shown that the corrections proposed better represent the weathered rock masses usually found on open pit on Quadrilátero Ferrífero.
Proposed adjustments and validation of different $ RMR_{89} $ geomechanical classification for Quadrilátero Ferrífero lithologies
https://orcid.org/0000-0003-2959-3041
Abstract Geomechanical classifications of rock masses are of great interest and importance for the design of civil and mining works, as slopes, open pits, and underground excavations stability are directly related to the mechanical properties of the rock mass classes. Some of the most common geomechanical rock mass classifications currently used are the RMR (Rock Mass Rating), the Q system, and the GSI (Geological Strength Index). Recently (2011), it was presented a new approach for RMR in which the author had pointed an erroneous understanding by some of the RMR users related to the weights adopted for some parameters. Due to the great difficulty found by some professionals to classify highly weathered rock masses by using $ RMR_{89} $, various authors have proposed a correction of for $ RMR_{89} $ values by considering an adjustment index. On this context, the present work has the aim of verifying, for several rock masses from Quadrilátero Ferrífero, Minas Gerais, Brazil, the effectiveness of these three proposed adjustments on $ RMR_{89} $. The results has shown that the corrections proposed better represent the weathered rock masses usually found on open pit on Quadrilátero Ferrífero.
Proposed adjustments and validation of different $ RMR_{89} $ geomechanical classification for Quadrilátero Ferrífero lithologies
Campos, Lucas Almeida (author) / Marques, Eduardo Antonio Gomes (author) / Costa, Teófilo Aquino Vieira (author) / Ferreira Filho, Flávio Affonso (author)
2020
Article (Journal)
Electronic Resource
English
BKL:
56.00$jBauwesen: Allgemeines
/
38.58
Geomechanik
/
38.58$jGeomechanik
/
56.20
Ingenieurgeologie, Bodenmechanik
/
56.00
Bauwesen: Allgemeines
/
56.20$jIngenieurgeologie$jBodenmechanik
RVK:
ELIB18
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