矿物学对压实过滤铜尾矿不排水单调单剪响应的影响

IF 3.3 2区工程技术 Q2 ENGINEERING, GEOLOGICAL

Soils and Foundations Pub Date : 2025-06-25 DOI:10.1016/j.sandf.2025.101636

Rodrigo Zorzal Velten , Carina Ulsen , João Paulo Rodrigues da Costa , Carlos Alex Alves Lima , Maiki Mafessoli , João Vítor de Azambuja Carvalho , Nilo Cesar Consoli

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引用次数: 0

摘要

尾矿是一种人为物质，其行为受其颗粒的矿物学特征和所形成的织物的影响很大。研究了平面应变条件下尾砂成分对尾砂的影响。为此，对两个不同矿山的铜尾矿进行了研究。两种尾矿的颗粒级配和形态相似，主要区别在于矿物学。采用3种压实度和4种有效围压值（50 ~ 400kpa）。利用具有背压和已知水平应力的简易剪切装置，首次从临界状态土力学角度给出了平面应变条件下铜尾砂的剪切结果。结果揭示了矿物学对临界状态参数M和v - log p '临界状态线形状的影响。这突出了认识矿物学影响对合理设计尾矿储存设施的重要性。

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Role of mineralogy on the undrained monotonic simple shear response of compacted filtered copper tailings

Tailings are anthropic materials whose behavior can be greatly affected by the mineralogy of their particles and the fabric formed. This paper focuses on the effects of tailings composition under plane strain conditions. For this, two copper tailings from distinct mines are studied. The tailings present a similar particle grading and morphology, so the main difference between them is restricted to mineralogy. Three compaction degrees and four effective confining pressure values (ranging from 50 to 400 kPa) were adopted. For the first time, the results of copper tailings under plane strain conditions are presented in the light of critical state soil mechanics due to the use of a simple shear apparatus equipped with backpressure and known horizontal stresses. The results revealed the influence of mineralogy on the critical state parameter M and the shape of the v – log p′ critical state lines. This highlights the importance of acknowledging mineralogy influence for properly designing tailings storage facilities.

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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.