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Bulletin of Engineering Geology and the Environment

Erschienen in:

20.08.2018 | Original Paper

ARMR, a new classification system for the rating of anisotropic rock masses

verfasst von: Charalampos Saroglou, Shengwen Qi, Songfeng Guo, Faquan Wu

Erschienen in: Bulletin of Engineering Geology and the Environment | Ausgabe 5/2019

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Abstract

The engineering behavior of rock masses is strongly dependent on anisotropy, which is present at different scales, from the microscale in the intact rock due to the alignment of rock crystals (inherent anisotropy) to the macroscale in rock masses with anisotropic rock structure, characterized by distinct bedding or schistosity planes. This paper presents a new rock mass classification system, Anisotropic Rock Mass Rating (ARMR), specifically developed for the classification of anisotropic rock masses. ARMR considers the following rating parameters: (a) anisotropy strength index, R_C; (b) uniaxial compressive strength of intact rock; (c) degree of structure anisotropy; (d) corrected rock quality designation (RQD); (e) condition of anisotropy surfaces; and (f) groundwater conditions. Its use is illustrated and explained by application to specific case studies in anisotropic rock masses, and the advantages and limitations of the classification system are outlined. The strength of anisotropic rock masses is determined using the modified Hoek–Brown criterion (Saroglou and Tsiambaos, Int J Rock Mech Mining Sci 45:223–234, 2008), which is extended to rock masses with the use of ARMR.

Vorheriger Artikel Experimental and numerical analyses on the effect of stiffness on bedded sandstone strain burst with varying dip angle

Nächster Artikel Classification model for surrounding rock based on the PCA-ideal point method: an engineering application

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Titel: ARMR, a new classification system for the rating of anisotropic rock masses
verfasst von: Charalampos Saroglou
Shengwen Qi
Songfeng Guo
Faquan Wu
Publikationsdatum: 20.08.2018
Verlag: Springer Berlin Heidelberg
Erschienen in: Bulletin of Engineering Geology and the Environment / Ausgabe 5/2019
Print ISSN: 1435-9529
Elektronische ISSN: 1435-9537
DOI: https://doi.org/10.1007/s10064-018-1369-4

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