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Toplam kayıt 11, listelenen: 1-10
Mechanical, energy evolution, damage and microstructural behavior of cemented tailings-rock fill considering rock content and size effects
(Elsevier, 2024)
Cemented tailings-rock fill (CTRF) is crucial for engineering intention and durability of re-filled stopes in deep underground mines. The current work examined the effects of fragment contents and sizes on the mechanical, ...
Enhancing flexural property and mesoscopic mechanism of cementitious tailings backfill fabricated with 3D-printed polymers
(Elsevier, 2024)
Backfill mining, one of the most common methods for removing hazardous tailings, is performed on cementitious tailings backfill (CTB), which can be employed to fully discard risky tailings while diminishing the ecological ...
Polypropylene fiber's effect on the features of combined cement-based tailing backfill: Micro- and macroscopic aspects
(MDPI, 2024)
In undercut-and-fill mining, backfills show weak tensile strength and poor ductility properties since they act as artificial pillars to support stope roofs. Hence, the enhancement of the stability of mining structures and ...
Reinforcing effects of polypropylene on energy absorption and fracturing of cement-based tailings backfill under impact loading
(Springer, 2024)
Polypropylene (PP) fiber-reinforced cement-based tailings backfill (FRCTB) is a green compound material with superior crack resistance and has good prospects for application in underground mining. However, FRCTB exhibits ...
Effect of magnetic induction intensity and steel fiber rate on strength improvement of cementitious filling composites
(Elsevier, 2024)
The underhand cut-fill backfill mining manner (UCFBMM) is widely employed in nonferrous metallic mines, and stability of the artificial backfill top plate directly determines the safety of operators and equipment, which ...
Effect of content of defluorinated solid waste on macroscopic strength and microstructural evolution of cemented tail filling composites
(Elsevier, 2024)
Solid waste created by the ferrous mining industry has a major number of notable differences. The deficiency of recognition of solid waste features is the key factor limiting its discarding and reuse. In this paper, cemented ...
Influence of alkaline agents with different contents on strength features, energy dissipation and microscopic behavior of cement-based high‑sulfur tailings fill
(Elsevier, 2024)
As high‑sulfur tails encompass abundant pyrite (FeS2), it is easy to form acidic/leachate waters under the action of water and air, which is opposed to cement-based tail fill (CTF)’s strength development. Therefore, the ...
Effect of 3D printed skeleton shapes on strength behavior, stress evolution and microstructural response of cement-based tailings backfills
(Elsevier, 2024)
The inherent brittle behavior of cement-based tail backfill (CTB) poses some challenges that can significantly impact the safety and effectiveness of underground mining operations. Due to its propensity for abrupt and ...
Analyzing microscopic structure and macroscopic strength behavior of cement-based tail fills incorporating fiber by X-ray CT scanning technique
(Elsevier, 2024)
Using structurally layered cementitious tailings backfill (CTB) as synthetic roof material for down-cut-and-fill mining can save cost while ensuring mechanical properties. In the current investigation, polypropylene fiber ...
Microstructure evolution and mechanical behavior of foamed cement-based tail backfills under varying fiber types and concentrations
(Springer, 2024)
Industrial solid waste (mine tailings) management has emerged as the key universal ecological challenge as a result of the unceasing creation of rising waste by-products. Employing tailings makes mine fill production ...