Applicability of the geological strength index (GSI) classification for very weak and sheared rock masses. The case of the Athens Schist Formation

被引：237

作者：

Hoek E. ^{[1
]}

Marinos P. ^{[2
]}

Benissi M. ^{[3
]}

机构：

[1] North Vancouver, BC V7R 4X1

[2] Natl. Technical University of Athens, 10682 Athens

[3] ATTIKO METRO S.A., 11525 Athens

来源：

Bulletin of Engineering Geology and the Environment | 1998年 / 57卷 / 2期

关键词：

Deformability modulus; Rock mass classification; Rock mass structure; Sheared shales; Strength parameters; Weak rocks;

D O I：

10.1007/s100640050031

中图分类号：

学科分类号：

摘要：

The Athens Schist Formation includes a wide variety of metasedimentary rocks, varying from strong or medium strong rocks such as sericite metasandstone, limestone, greywacke, sericite schist through to weak rocks such as metasiltstone, clayey and silty shale and phyllite. The overall rock mass is highly heterogeneous and anisotropic owing to the combined effect of advanced weathering and severe tectonic stressing that gave rise to intense folding and shearing followed by extensional faulting, which resulted in highly weathered rock masses and numerous shear and/or mylonite zones with distinct downgraded engineering properties. This paper is focused on the applicability of the GSI classification system to these highly heterogeneous rock masses and proposes an extension of the GSI system to account for the foliated or laminated weak rocks in the lower range of its applicability.

引用

页码：151 / 160

页数：9

共 7 条

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[7]

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