Estimation of the Poisson's Ratio of the Rock Mass

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-10-04 DOI:10.3311/ppci.22689

Samad Narimani, Seyed Motreza Davarpanah, Balázs Vásárhelyi

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Abstract

The value of Poisson's ratio is a crucial parameter in rock mechanics and engineering for both intact rock and rock mass. Poisson's ratio has not gotten the attention it merits compared to other essential mechanical characteristics of intact rock and rock mass. Limited relationships exist between rock mass classification systems (such as RMR, RMQR, Q, and GSI) and Poisson's ratio. This paper provides a comprehensive review of models proposed by various researchers for estimating Poisson's ratio for rock mass. The different methods are compared, and new general equations are derived. The results indicate that the Poisson's ratio value of rock mass is inversely proportional to its quality and strength and depends on the Poisson's ratio value of the intact rock. Specifically, a linear equation is obtained using the RMR or GSI system, showing that the Poisson's ratio increases as the quality and strength of the rock mass decrease. The Q system has a logarithmic link between the rock mass quality and Poisson's ratio. It should be noted that the derived equations are applicable only under the assumption of a homogeneous isotropic rock mass.

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岩体泊松比的估计

泊松比是岩石力学和工程中的一个重要参数，无论对完整岩石还是岩体都是如此。泊松比与完整岩石和岩体的其他基本力学特性相比，其优点尚未得到重视。岩体分类系统(如RMR、RMQR、Q和GSI)与泊松比之间存在有限的关系。本文对各种研究人员提出的岩体泊松比估计模型进行了综合评述。对不同的方法进行了比较，并推导出新的一般方程。结果表明:岩体的泊松比值与岩体的质量和强度成反比，并取决于完整岩体的泊松比值;具体地说，利用RMR或GSI系统得到了一个线性方程，表明泊松比随着岩体质量和强度的降低而增加。岩体质量与泊松比之间的Q系呈对数关系。需要注意的是，导出的方程仅适用于均质各向同性岩体的假设。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.