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Applied Sciences
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New Challenges in Geohazards of Mine Waste Disposal Sites: Tailings...
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New Challenges in Geohazards of Mine Waste Disposal Sites: Tailings Reservoirs and Dump Sites

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Earth Sciences".

Deadline for manuscript submissions: closed (31 December 2023) | Viewed by 943

Special Issue Editors

Dr. Chao Zhang

E-Mail Website
Guest Editor
State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
Interests: geohazards; mine geotechnical engineering; slope stability; mechanical behaviors of mine solid waste; monitoring and early warning technology
Prof. Dr. Guangjin Wang

E-Mail Website
Guest Editor
Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650000, China
Interests: mine geotechnical slope stability; geohazards prevention and control technology; processes and impact assessment of debris flow in mine waste dump; mine tailings underground goaf filling; soil pollution and remediation technology in mines
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The Special Issue aims to address the evolving challenges and advancements in the field of mine waste disposal. This issue focuses on publishing high-quality papers covering a diverse range of topics, including the mechanical properties of tailings, slope stability of tailings dams, monitoring and early warning systems for tailings dam failure, mechanisms and simulations of tailings dam-break flow, mechanical properties of soil-rock mixtures, slope stability of mine dumps, and secondary disasters resulting from mine dump slope failures.

Contributions to this Special Issue will offer valuable insights into understanding the mechanical behavior, assessing slope stability, and predicting failure mechanisms of tailings dams. Additionally, papers on the mechanical properties of soil–rock mixtures, stability analysis of mine dumps, and strategies for mitigating secondary disasters will be included. The objective is to facilitate knowledge exchange, foster collaboration, and explore innovative approaches to mitigate geohazards associated with mine waste disposal.

Researchers and practitioners in the field of geohazards and mine waste disposal are encouraged to submit their original research papers to this Special Issue. By sharing their expertise and research findings, they can contribute to advancing knowledge and developing effective strategies for the safe and sustainable management of tailings reservoirs and dump sites.

Dr. Chao Zhang
Prof. Dr. Guangjin Wang
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • tailings reservoirs
  • mine dumps
  • geohazards
  • mechanical properties
  • slope stability
  • tailings dam failure
  • dam-break flow
  • soil–rock mixture
  • secondary disasters
  • monitoring and early warning

Published Papers (1 paper)

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Research

18 pages, 8157 KiB  
Article
Numerical Simulation of Seepage Surface and Analysis of Phreatic Line Control from a Fine-Grained Tailings High Stacked Dam under Complicated Geography Conditions
by Yabing Han, Guangjin Wang, Xudong Zhang and Bing Zhao
Appl. Sci. 2023, 13(23), 12859; https://doi.org/10.3390/app132312859 - 30 Nov 2023
Viewed by 621
Abstract
Background: It is adverse for the safety of a tailings dam to use fine-grained tailings as the materials for a high tailings dam because of the low penetration coefficient, the slow consolidating velocity, and the bad physical mechanical property. Furthermore, with the influence [...] Read more.
Background: It is adverse for the safety of a tailings dam to use fine-grained tailings as the materials for a high tailings dam because of the low penetration coefficient, the slow consolidating velocity, and the bad physical mechanical property. Furthermore, with the influence of complicated geography conditions, the phreatic line will be increased enormously when encountering special conditions, which directly affect the safe operation of the tailings dam. Methods: In this study, based on the engineering, geological, and hydrogeological conditions and survey results of a tailings dam, a 210 m fine-grained tailings dam located in three gullies was selected and used to simulate the three-dimensional seepage field of a tailings dam under a steady saturated state by using the finite element software MIDAS GTS. The permeability coefficient was inverted, the seepage field of the project under different working conditions was simulated, and the position of the phreatic line was obtained. The controlled position of phreatic lines was determined by combining the seepage field with the stability requirements. Results: Back analysis could accurately reflect the actual permeability coefficient of each partition of tailings dams. Due to the multiple areas of seepage accumulation, large valley corners, and narrowing of the dam axis, the phreatic line of the shoulder region was elevated by 2~3 m compared to the surrounding area and was thereby the most critical region of the tailings dam seepage control. The stability requirements and minimum controlled position of the phreatic line requirements could be met when the controlled position of the phreatic line was 23 m. Conclusion: This study revealed the key areas and reasons why the tailings dam’s phreatic line is prone to be uplifted under complicated geography conditions. It was very critical to control the local phreatic line by adopting local horizontal seepage drainage measures or radiation wells in the key areas of the tailings dam to ensure the safety of the tailings dam. In addition to strengthening the daily monitoring of the key areas and the exfiltration facilities of the tailings dam, it is recommended to carry out determination tests of the permeability coefficient and particle size at regular intervals. The findings could provide countermeasures for seepage control. Full article
(This article belongs to the Special Issue New Challenges in Geohazards of Mine Waste Disposal Sites: Tailings Reservoirs and Dump Sites)
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