Behavioural analysis of iron ore tailings through critical state soil mechanics

IF 1.1 Q4 ENGINEERING, GEOLOGICAL

Soils and Rocks Pub Date : 2022-04-21 DOI:10.28927/sr.2022.071921

J. P. Silva, P. Cacciari, V. Torres, L. F. Ribeiro, A. Assis

{"title":"Behavioural analysis of iron ore tailings through critical state soil mechanics","authors":"J. P. Silva, P. Cacciari, V. Torres, L. F. Ribeiro, A. Assis","doi":"10.28927/sr.2022.071921","DOIUrl":null,"url":null,"abstract":"Understanding the geotechnical properties of iron ore tailings is currently one of the major challenges in the mining industry. With transitions from drained to undrained conditions occurring in seconds, recent dam problems have been a challenge to solve with classical soil mechanics, which provides few means to explain how such phenomena develop. There is also an increasing propensity in technical and scientific circles to seek constitutive models that are based on critical state soil mechanics and that allow for the analysis of tailings behaviour. However, there is still a lack of knowledge and information about the critical state properties of iron ore tailings. The present research experimentally and numerically investigated the effectiveness of modelling the behaviour of iron ore tailings. The aim of these experiments was to assess the critical state parameters of tailings from a significant iron ore operation site in Quadrilátero Ferrífero (Minas Gerais state, Brazil). The results indicated that the selected numerical model (NorSand) was adequate to evaluate the behaviour of the studied mine tailings. The numerical results showed consistent adherence to the experimental results of both drained and undrained tests, with deformations below 5% and samples in which the state parameter had a small magnitude.","PeriodicalId":43687,"journal":{"name":"Soils and Rocks","volume":" ","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2022-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Soils and Rocks","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.28927/sr.2022.071921","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}

引用次数: 3

Abstract

Understanding the geotechnical properties of iron ore tailings is currently one of the major challenges in the mining industry. With transitions from drained to undrained conditions occurring in seconds, recent dam problems have been a challenge to solve with classical soil mechanics, which provides few means to explain how such phenomena develop. There is also an increasing propensity in technical and scientific circles to seek constitutive models that are based on critical state soil mechanics and that allow for the analysis of tailings behaviour. However, there is still a lack of knowledge and information about the critical state properties of iron ore tailings. The present research experimentally and numerically investigated the effectiveness of modelling the behaviour of iron ore tailings. The aim of these experiments was to assess the critical state parameters of tailings from a significant iron ore operation site in Quadrilátero Ferrífero (Minas Gerais state, Brazil). The results indicated that the selected numerical model (NorSand) was adequate to evaluate the behaviour of the studied mine tailings. The numerical results showed consistent adherence to the experimental results of both drained and undrained tests, with deformations below 5% and samples in which the state parameter had a small magnitude.

查看原文本刊更多论文

基于临界状态土力学的铁矿尾矿特性分析

了解铁矿尾矿的岩土特性是目前采矿业面临的主要挑战之一。随着从排水状态到不排水状态的转变在几秒钟内发生，最近的大坝问题一直是用经典土壤力学解决的挑战，而经典土壤力学几乎没有提供解释这种现象如何发展的方法。技术和科学界也越来越倾向于寻求基于临界状态土壤力学的本构模型，以便分析尾矿的行为。然而，关于铁尾矿的临界状态性质，仍然缺乏相关的知识和信息。本研究通过实验和数值研究了铁矿石尾矿行为建模的有效性。这些实验的目的是评估Quadrilátero Ferrífero（巴西米纳斯吉拉斯州）一个重要铁矿石作业现场尾矿的临界状态参数。结果表明，所选的数值模型（NorSand）足以评估所研究尾矿的行为。数值结果显示，排水和不排水试验的实验结果一致，变形低于5%，样品的状态参数较小。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Soils and Rocks ENGINEERING, GEOLOGICAL-

CiteScore

1.00

自引率

20.00%

发文量

期刊介绍： Soils and Rocks publishes papers in English in the broad fields of Geotechnical Engineering, Engineering Geology and Environmental Engineering. The Journal is published in April, August and December. The journal, with the name "Solos e Rochas", was first published in 1978 by the Graduate School of Engineering-Federal University of Rio de Janeiro (COPPE-UFRJ).