Empirical relationship between the Geological Strength Index (GSI) and rock mass quality (Q-system) in granite and sedimentary rocks

IF 4.2 2区工程技术 Q3 ENGINEERING, ENVIRONMENTAL

Bulletin of Engineering Geology and the Environment Pub Date : 2025-05-05 DOI:10.1007/s10064-025-04303-1

Gábor Somodi, Neil Bar, Ákos Török, Balázs Vásárhelyi

引用次数: 0

Abstract

This paper presents the relationship between Rock Mass Quality (Q-system) and the Geological Strength Index (GSI) parameters. Equations are suggested based on field data and calculations of the empirical results of granitic rock masses (Hungary) and siltstones, sandstones and quartzite formations (Australia). Measured and calculated GSI values vs Q values are given for granitic rocks, showing a higher correlation than that of the sedimentary rocks of Australia. The different behaviors of rock masses explain the higher correlation between GSI vs Q and GSI chart vs GSI calculated for igneous rock bodies. Despite the differences in stress fields and the highly tectonised structural geological setting of the granitic rock mass, the isotropic nature of granitic rocks vs. anisotropy of sedimentary rock bodies is reflected in the correlation coefficients.

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花岗岩和沉积岩地质强度指数（GSI）与岩体质量（q系统）的经验关系

本文介绍了岩体质量（q系统）与地质强度指数（GSI）参数之间的关系。根据花岗质岩体（匈牙利）和粉砂岩、砂岩和石英岩地层（澳大利亚）的野外数据和经验计算结果提出了方程。给出了花岗质岩石的GSI值与Q值的测量值和计算值，显示出比澳大利亚沉积岩更高的相关性。岩体的不同行为解释了GSI与Q和GSI图与火成岩计算的GSI之间较高的相关性。尽管花岗岩岩体的应力场和高度构造化的构造地质背景存在差异，但相关系数反映了花岗岩岩体的各向同性与沉积岩岩体的各向异性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Bulletin of Engineering Geology and the Environment 工程技术-地球科学综合

CiteScore

7.10

自引率

11.90%

发文量

445

审稿时长

4.1 months

期刊介绍： Engineering geology is defined in the statutes of the IAEG as the science devoted to the investigation, study and solution of engineering and environmental problems which may arise as the result of the interaction between geology and the works or activities of man, as well as of the prediction of and development of measures for the prevention or remediation of geological hazards. Engineering geology embraces: • the applications/implications of the geomorphology, structural geology, and hydrogeological conditions of geological formations; • the characterisation of the mineralogical, physico-geomechanical, chemical and hydraulic properties of all earth materials involved in construction, resource recovery and environmental change; • the assessment of the mechanical and hydrological behaviour of soil and rock masses; • the prediction of changes to the above properties with time; • the determination of the parameters to be considered in the stability analysis of engineering works and earth masses.