Advances in Materials Science and Engineering

Booming for Backfill Materials


Publishing date
01 May 2020
Status
Closed
Submission deadline
27 Dec 2019

Lead Editor

1Central South University, Changsha, China

2Karadeniz Technical University, Trabzon, Turkey

3Lulea University of Technology, Lulea, Sweden

4University of Western Australia, Perth, Australia

This issue is now closed for submissions.
More articles will be published in the near future.

Booming for Backfill Materials

This issue is now closed for submissions.
More articles will be published in the near future.

Description

The dramatic increase of the global population and extensive urbanization has similarly increased the requirement for minerals from the mining industry. With the depletion of near-surface ore deposits, underground mining is being increasingly employed all around the world. However, the excavation of ore deposits using underground mining inevitably results in massive, dangerous, underground voids (also known as ‘goaf’ or ‘stopes’). Stress redistribution happens once these voids have been created and, sometimes, disastrous accidents are triggered. To support the underground excavation, ore pillars must be left to ensure the stability of the stopes, leading to resources being wasted and a decrease of the financial return of the mine.

As a result, the mine backfill technology that places single or mixed materials in underground stopes is growing rapidly and attracting increased attention from both academia and industry. It has been proven that mine backfill provides ground support for mining operations, reduces ore dilution, and allows safe disposal of solid wastes. Moreover, the surface subsidence can be minimized, thereby reducing rehabilitation costs.

The successful application of mine backfill heavily depends on the design of backfill materials, which have been rapidly developed in recent years. Related research topics, such as studies on the consolidation mechanism of cementitious materials, the rheological mechanism of backfill slurry, the mechanical mechanism of backfill body and its environmental effects, have produced high-speed developmental outcomes accordingly. In addition, intelligent backfill that employs Internet of Things (IoT) technology and/or artificial intelligence techniques has been developed and applied to increase the efficiency of backfill materials. Today, there is an increasing need for advanced studies exploring the engineering potential of backfill materials and creating novel methods for their fabrication, enhancement, and transportation.

This special issue aims to collect new discoveries about and new applications for backfill materials to promote waste recycling and environmental protection in the mining industry.

Potential topics include but are not limited to the following:

  • Backfill aggregates, either natural or artificial, that can be used for mine backfill, such as distinctive tailings, waste rock, smelting slag, coal gangue, construction waste, and agricultural waste
  • Cementitious materials that can bond the particles or bulk aggregates through physicochemical action, such as Portland cement, slag, phosphogypsum, mixed cementitious materials, and special cement designed for a given aggregate
  • Backfill auxiliary additives, including materials that can improve the mechanical and rheological properties of backfill, such as hardening accelerating admixture, water reducer, expansive agent, and pumping agent
  • Intelligent backfill that employs Internet of Things (IoT) technology and/or artificial intelligence techniques, such as big data in mine backfill, machine-learning aided decision-making, automatic detection, software development, and integrated backfill design
  • The required strength of the backfill material, its mechanical mechanism(s) and interactions with the surrounding rock mass, microstructural properties, hydraulic conductivity, degradation/durability characteristics of CPB materials, and the similar
  • The rheology of backfill, including rheological model, pressure drop in pipeline transportation, time-dependent properties, and thixotropy
  • The effect of mine backfill on the environment, including the control of surface subsidence, the toxicants from backfill to underground water, novel evaluation methods to qualify such toxicant release, and novel approaches to reduce or even eliminate the toxicant release
  • Case studies of typical mine backfill materials in engineering applications

Articles

  • Special Issue
  • - Volume 2020
  • - Article ID 4536257
  • - Research Article

Effect of Desliming of Tailings on the Fresh and Hardened Properties of Paste Backfill Made from Alkali-Activated Slag

Ferdi Cihangir | Yunus Akyol
  • Special Issue
  • - Volume 2020
  • - Article ID 6345206
  • - Research Article

Preparation and Mechanical Properties of Cemented Uranium Tailing Backfill Based on Alkali-Activated Slag

Fulin Wang | Guoliang Chen | ... | Zhengping Yuan
  • Special Issue
  • - Volume 2020
  • - Article ID 3642356
  • - Research Article

Study on Damage Model and Damage Evolution Characteristics of Backfill with Prefabricated Fracture under Seepage-Stress Coupling

Jifeng Hou | Zhongping Guo | ... | WenWu Xie
  • Special Issue
  • - Volume 2020
  • - Article ID 1918278
  • - Research Article

Design and Application of Rapid Dewatering for Tailings Containing Sodium Silicate: Laboratory and Industrial Test Results

Guoquan Sun | Keping Zhou | ... | Chongchun Xiao
  • Special Issue
  • - Volume 2020
  • - Article ID 7421769
  • - Research Article

Effects of Corn Stalk Fly Ash (CSFA) on the Mechanical and Deformation Properties of Cemented Coal Gangue Backfill

Tingye Qi | Haochen Wang | ... | Shufeng Zhang
  • Special Issue
  • - Volume 2020
  • - Article ID 5828514
  • - Research Article

Roof Movement and Failure Behavior When Mining Extra-Thick Coal Seams Using Upward Slicing Longwall-Roadway Cemented Backfill Technology

Xuejie Deng | Zongxuan Yuan | ... | Junwen Zhang
  • Special Issue
  • - Volume 2019
  • - Article ID 3574190
  • - Research Article

A Novel Prediction Model of Strength of Paste Backfill Prepared from Waste-Unclassified Tailings

Haiyong Cheng | Shunchuan Wu | ... | Junhong Li
Advances in Materials Science and Engineering
 Journal metrics
Acceptance rate33%
Submission to final decision71 days
Acceptance to publication29 days
CiteScore2.000
Impact Factor1.271
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