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cemented paste backfill 1

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Tailings Problems and Tailings Utilization and Treatments in the Metal Mines

Cai Sijing,Yang Peng

Strategic Study of CAE 2000, Volume 2, Issue 4, Pages 89-92

Abstract: Tailings dam occupies large area of land. Accidents may be caused by tailings dam failure.tailings, utilizing tailings to make building materials or magnetized fertilizer, etc.The treatment of tailings should include depositing tailings underground, utilizing tailings dam as awaste dump, and land reclaiming while depositing tailings paste.The final purpose of utilizing and treating tailings is to set up a “mine without tailings&rdquo

Keywords： metal mines tailings environmental pollution undisrground tailings disposal tailings paste mine withouttailings

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Anatomy of a Tailings Dam Failure and a Caution for the Future

Jane Palmer

Engineering 2019, Volume 5, Issue 4, Pages 605-606 doi: 10.1016/j.eng.2019.07.009

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Time- and temperature-dependence of compressive and tensile behaviors of polypropylene fiber-reinforced cemented paste backfill

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4, Pages 1025-1037 doi: 10.1007/s11709-021-0741-9

Abstract: The understanding of compressive and tensile behaviors of polypropylene fiber-reinforced cemented paste backfill (FR-CPB) play crucial roles in the successful implementation of reinforcement technique in underground mine backfilling operations. However, very limited studies have been performed to gain insight into the evolution of compressive and tensile behaviors and associated mechanical properties of FR-CPB under various curing temperatures from early to advanced ages. Thus, this study aims to investigate the time (7, 28, and 90 d)- and temperature (20°C, 35°C, and 45°C)-dependence of constitutive behavior and mechanical properties of FR-CPB. The obtained results show that pre- and post-failure behaviors of FR-CPB demonstrate strongly curing temperature-dependence from early to advanced ages. Moreover, the pseudo-hardening behavior is sensitive to curing temperature, especially at early ages. Furthermore, the mechanical properties including elastic modulus, material stiffness, strengths, brittleness, cohesion, and internal friction angle of FR-CPB show increasing trends with curing temperature as curing time elapses. Additionally, a predictive model is developed to capture the strong correlation between compressive and tensile strength of FR-CPB. The findings of this study will contribute to the successful implementation of FR-CPB technology.

Keywords： cemented paste backfill fiber reinforcement constitutive behavior temperature tailings

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metal accumulation and phytostabilization potential of dominant plant species growing on manganese mine tailings

YANG Shengxiang,LIANG Shichu,YI Langbo,XU Bibo,CAO Jianbing,GUO Yifeng,ZHOU Yu

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 3, Pages 394-404 doi: 10.1007/s11783-013-0602-4

Abstract: excluders of certain heavy metals plays a fundamental role in a remediation strategy for metalliferous mine tailingsA field survey of terrestrial higher plants growing on Mn mine tailings at Huayuan, Hunan Province, Chinawas conducted to identify candidate species for application in phytostabilization of the tailings infor phytostabilization purposes and could be used as pioneer species in phytoremediation of Mn mine tailings

Keywords： Mn mine tailings heavy metal accumulation phytostabilization