ORIGINAL RESEARCH article
Front. Mater.
Sec. Structural Materials
Volume 12 - 2025 | doi: 10.3389/fmats.2025.1600681
This article is part of the Research TopicAdvanced Materials and Technologies for Sustainable Development of Underground ResourcesView all 48 articles
Energy Dissipation Properties of Backfill Materials under Compaction in Solid Waste Backfill Mining
Provisionally accepted
- 1Changzhou Vocational Institute of Engineering, Changzhou, China
- 2Wuxi RL Precision Machinery Co., Ltd., Wuxi, China
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The compaction of backfill materials is critical in Solid Waste Backfill Mining (SWBM) systems, as it can reduce the chance of dynamic hazards effectively.Despite its importance, the compaction and energy dissipation properties of backfill materials are still not fully understood. In this research, a series of laboratory tests were conducted to explore the deformation, particle morphology, and energy dissipation properties of gangue particles. The results indicated that the process of axial strain increase encompassed three stages: rapid increase (0~2 MPa) stage, slow increase (2~8 MPa) stage, and slight increase (8~16 MPa) stage. For the specimen (n=0.4), the particle flatness ranges from 1.38 to 1.75 and decreases gradually with some fluctuations. The total surface area and particle crushing energy exhibit a similar trend, both increasing monotonically with the increase of axial stress, varying within 0.688~2.092 m 2 and 4.81~14.35 kJ/m 3 , respectively. The relationship between particle crushing energy and axial strain is approximated by a linear function. The energy consumed by particle breakage constitutes a small proportion (0.7%~7.8%) of the total energy consumption for specimen deformation, while the majority of energy consumption is attributed to inter-particle friction, especially in the later compaction stage. However, the initial particle size distribution has negligible influence on the total surface area and particle crushing energy.
Keywords: Solid waste backfill mining, Backfill materials, particle morphology, energy dissipation, particle crushing energy
Received: 26 Mar 2025; Accepted: 30 Apr 2025.
Copyright: © 2025 Yu, He, Zhang, Jiang, Li and Li. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Xu He, Changzhou Vocational Institute of Engineering, Changzhou, China
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