Next Article in Journal
Subsolidus Evolution of the Magnetite-Spinel-UlvöSpinel Solid Solutions in the Kovdor Phoscorite-Carbonatite Complex, NW Russia
Next Article in Special Issue
Recovery and Purification of Tin from Tailings from the Penouta Sn–Ta–Nb Deposit
Previous Article in Journal
Identification of Zn-Bearing Micas and Clays from the Cristal and Mina Grande Zinc Deposits (Bongará Province, Amazonas Region, Northern Peru)
Previous Article in Special Issue
CFD Simulation of Pipeline Transport Properties of Mine Tailings Three-Phase Foam Slurry Backfill
Article Menu
Issue 11 (November) cover image

Export Article

Open AccessArticle
Minerals 2017, 7(11), 216; doi:10.3390/min7110216

Use of Cemented Super-Fine Unclassified Tailings Backfill for Control of Subsidence

Key Laboratory of Ministry of Education on Safe Mining of Deep Metal Mines, Northeastern University, Shenyang 110819, China
School of engineering, RMIT University, Melbourne, VIC 3000, Australia
Faculty of Education, Northeast Normal University, Changchun 130024, China
Author to whom correspondence should be addressed.
Received: 11 October 2017 / Revised: 30 October 2017 / Accepted: 6 November 2017 / Published: 9 November 2017
(This article belongs to the Special Issue Minerals in Mine Wastes: Contributions to the Circular Economy)
View Full-Text   |   Download PDF [10006 KB, uploaded 15 November 2017]   |  


Known for its advantages in preventing geological and environmental hazards, cemented paste backfill (CPB) has become a topic of interest for scientists and mining engineers in recent decades. This paper presents the results of a study on the use of cemented super-fine tailings backfill (CSUTB) in an underground mine for control of surface subsidence. An analytical solution is developed based on the available model to calculate the required strength of backfill when in contact with non-cemented tailings (NCT). The effect of solid contents on the rheological properties of CSUTB is investigated. A reasonable mix proportion (RMP) of CSUTB is determined for Zhongguan Iron Mine (ZGIM) based on laboratory experiments. The validity of RMP in surface subsidence control is verified by a 3D numerical model. The obtained results show that CSUTB requires higher strength when in contact with NCT than when in contact with orebody. Rheological characteristics, e.g., slump, fluidity, and bleeding rate of fresh CSUTB, decrease with higher solids content, of which values with a certain solids content can be determined by quadratic polynomial regression equations. RMP with a cement to tailings (c/t) ratio of 1:10 and a solids content of 70% is recommended for ZGIM, as it shows favorable mechanical and rheological abilities. The deformation parameters (curvature, inclination, and horizontal deformation rate) obtained from numerical modeling are acceptable and lower than critical values, meaning CSUTB can feasibly be used with RMP in subsidence control. View Full-Text
Keywords: super-fine tailings; cemented backfill; Mitchell solution; rheological properties; subsidence control super-fine tailings; cemented backfill; Mitchell solution; rheological properties; subsidence control

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Yang, L.; Qiu, J.; Jiang, H.; Hu, S.; Li, H.; Li, S. Use of Cemented Super-Fine Unclassified Tailings Backfill for Control of Subsidence. Minerals 2017, 7, 216.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Minerals EISSN 2075-163X Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top