Behaviour of a sandy silt gold tailings under drained simple shear loading in a torsional shear hollow cylinder apparatus

IF 3.3 2区工程技术 Q2 ENGINEERING, GEOLOGICAL

Soils and Foundations Pub Date : 2025-07-14 DOI:10.1016/j.sandf.2025.101635

Riccardo Fanni , David Reid , Andy Fourie

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引用次数: 0

Abstract

Experimental results are presented in this technical paper to investigate the mechanisms of plane strain consolidation and drained shearing typical of below slope conditions. Five torsional shear hollow cylinder tests were conducted on a sandy silt gold tailings, where consolidation was performed under at-rest (K₀) conditions, and by applying a horizontal shear stress, while maintaining plane strain conditions. The tests were carried out under drained simple shear conditions (strain controlled) on tailings specimens prepared in loose and dense states and along a constant shear stress drained stress path (stress controlled) on a loose specimen, using an automated computer-controlled testing procedure. The evolution of static stresses in the loose and dense specimens during principal stress rotation, while maintaining plane strain conditions, were examined. These tests provide valuable insights into the behavior of tailings under plane strain conditions, contributing to the calibration of numerical models for slope analysis and more broadly for plane strain problems.

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砂质粉砂金尾矿在排水单剪荷载作用下的扭剪空心圆筒试验研究

本文给出了典型坡下条件下平面应变固结和排水剪切机理的试验结果。对某砂质粉砂金尾矿进行了5次扭剪空心筒试验，分别在静止（K0）条件下、施加水平剪应力时、保持平面应变条件下进行固结。试验采用计算机自动控制的试验程序，在松散和致密状态下制备的尾矿试样在排水简单剪切条件下（应变控制）进行试验，在松散试样上沿恒定剪切应力排水应力路径（应力控制）进行试验。在保持平面应变条件下，研究了松散和致密试样在主应力旋转过程中静应力的演变。这些试验对尾矿在平面应变条件下的行为提供了有价值的见解，有助于校准边坡分析的数值模型，更广泛地用于平面应变问题。

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

Soils and Foundations 工程技术-地球科学综合

CiteScore

6.40

自引率

8.10%

发文量

审稿时长

5 months

期刊介绍： Soils and Foundations is one of the leading journals in the field of soil mechanics and geotechnical engineering. It is the official journal of the Japanese Geotechnical Society (JGS)., The journal publishes a variety of original research paper, technical reports, technical notes, as well as the state-of-the-art reports upon invitation by the Editor, in the fields of soil and rock mechanics, geotechnical engineering, and environmental geotechnics. Since the publication of Volume 1, No.1 issue in June 1960, Soils and Foundations will celebrate the 60th anniversary in the year of 2020. Soils and Foundations welcomes theoretical as well as practical work associated with the aforementioned field(s). Case studies that describe the original and interdisciplinary work applicable to geotechnical engineering are particularly encouraged. Discussions to each of the published articles are also welcomed in order to provide an avenue in which opinions of peers may be fed back or exchanged. In providing latest expertise on a specific topic, one issue out of six per year on average was allocated to include selected papers from the International Symposia which were held in Japan as well as overseas.