Estimating support pressure with finite element and convergence-confinement method for different rock masses

Q4 Engineering

Scientific Mining Journal Pub Date : 2023-10-03 DOI:10.30797/madencilik.1356042

Hüseyin Onur DÖNMEZ, Hakan TUNÇDEMİR

引用次数: 0

Abstract

Support pressure is a key factor in the stability of the excavation area during mining and tunneling. The vital thing desired in an underground engineering structure is to ensure that the structure survives safely throughout its lifetime. For this reason, choosing the right support system at the planning stage is very important for the pressure that will affect the support system must be determined with a certain convergence. This article aims to discuss the support pressures by the finite element method and convergence-confinement method and compare the results. A series of two-dimensional finite element models are established to analyze support pressure with different rock masses selected from the literature. The results reveal that since the convergence-confinement method and the finite element method have high-order relationships regarding support pressures and displacements for weak rock masses, the support pressures and the displacement values for similar conditions can be estimated with the convergence-confinement method, which is more practical than the finite element method.

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用有限元法和收敛约束法估算不同岩体的支护压力

在采矿和隧道施工过程中，支护压力是影响开挖区稳定性的关键因素。在地下工程结构中，最重要的是确保结构在其整个生命周期内安全生存。因此，在规划阶段选择合适的支撑系统是非常重要的，因为影响支撑系统的压力必须具有一定的收敛性。本文旨在用有限元法和收敛约束法讨论支承压力，并对结果进行比较。建立了一系列二维有限元模型，对文献中选取的不同岩体进行支护压力分析。结果表明，由于收敛约束法与有限元法在软弱岩体的支护压力和位移之间存在高阶关系，因此收敛约束法可以估算相似条件下的支护压力和位移值，比有限元法更实用。

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

Scientific Mining Journal Engineering-Industrial and Manufacturing Engineering

CiteScore

0.60

自引率

0.00%

发文量

期刊介绍： Scientific Mining Journal, which is published i n open access electronic environment and i n printed, is a periodical scientific journal of Union of Chambers of Turkish Engineers and Architects Chamber of Mining Engineers. The name of the journal was "Mining" until June 2016 and it has been changed to "Scientific Mining Journal" since September 2016 because it can be confused with popular journals with similar names and the ISSN number has been updated from 0024-9416 to 2564-7024. Scientific Mining Journal, published four times a year (March-June-September-December), aims to disseminate original scientific studies which are conducted according to the scientific norms and publication ethics at national and international scale, to scientists, mining engineers, the public; and thus to share scientific knowledge with society. The journal is in both Turkish and English. The journal covers theoretical, experimental, and applied research articles, which reflects the findings and results of an original research i n the field of mining engineering; review articles, which assess, evaluates, and interprets the findings of a comprehensive review of sufficient number of scientific articles and summarize them at present information and technology level; technical notes, which may be defined as a short article that describes a novel methodology o r technique; a case studies, which are based on the theoretical o r real professional practice and involves systematic data collection and analysis.